/* Treeview control
 *
 * Copyright 1998 Eric Kohl <ekohl@abo.rhein-zeitung.de>
 * Copyright 1998,1999 Alex Priem <alexp@sci.kun.nl>
 * Copyright 1999 Sylvain St-Germain
 *
 *
 * TODO:
 *   Using DPA to store the item ptr would be good.
 *   Node label edition is implemented but something appened in wine in the 
 *   two last weeks of march 99 that broke it.
 *   refreshtreeview: 	
		-small array containing info about positions.
 		-better implementation of RefreshItem:
              1) draw lines between parents
              2) draw items
			  3) draw lines from parent<->items.
		-implement partial drawing?
 *  -drag&drop: TVM_CREATEDRAGIMAGE should create drag bitmap.
 *  -scrollbars: horizontal scrollbar doesn't work.
 *  -Unicode messages
 *  -check custom draw
 *  -I_CHILDRENCALLBACK
 *   FIXME: check fontsize. (uRealItemHeight)
 *          test focusItem  (redraw in different color)
			uHotItem
			Edit: needs timer
				  better implementation.
 *   WM_HSCROLL is broken.
 *   use separate routine to get item text/image.
 *  
 *   Separate drawing/calculation.
 *
 * FIXMEs  (for personal use)
    Expand:		-ctlmacro expands twice ->toggle.
   -DblClick:	ctlmacro.exe's NM_DBLCLK seems to go wrong (returns FALSE).
   -treehelper: stack corruption makes big window. 
	     
 */


#include <string.h>
#include "winbase.h"
#include "wingdi.h"
#include "commctrl.h"
#include "treeview.h"
#include "debugtools.h"

DEFAULT_DEBUG_CHANNEL(treeview)

/* ffs should be in <string.h>. */

/* Defines, since they do not need to return previous state, and nr
 * has no side effects in this file.
 */
#define tv_test_bit(nr,bf)	(((LPBYTE)bf)[nr>>3]&(1<<(nr&7)))
#define tv_set_bit(nr,bf)	((LPBYTE)bf)[nr>>3]|=(1<<(nr&7))
#define tv_clear_bit(nr,bf)	((LPBYTE)bf)[nr>>3]&=~(1<<(nr&7))


#define TREEVIEW_GetInfoPtr(hwnd) \
  ((TREEVIEW_INFO *) GetWindowLongA( hwnd, 0))

static BOOL
TREEVIEW_SendSimpleNotify (HWND hwnd, UINT code);
static BOOL
TREEVIEW_SendTreeviewNotify (HWND hwnd, UINT code, UINT action, 
			HTREEITEM oldItem, HTREEITEM newItem);
static BOOL
TREEVIEW_SendTreeviewDnDNotify (HWND hwnd, UINT code, HTREEITEM dragItem, 
			POINT pt);
static BOOL
TREEVIEW_SendDispInfoNotify (HWND hwnd, TREEVIEW_ITEM *wineItem, 
			UINT code, UINT what);
static BOOL
TREEVIEW_SendCustomDrawNotify (HWND hwnd, DWORD dwDrawStage, HDC hdc,
			RECT rc);
static BOOL
TREEVIEW_SendCustomDrawItemNotify (HWND hwnd, HDC hdc,
            TREEVIEW_ITEM *tvItem, UINT uItemDrawState);
static LRESULT
TREEVIEW_DoSelectItem (HWND hwnd, INT action, HTREEITEM newSelect, INT cause);
static void
TREEVIEW_Refresh (HWND hwnd);

static LRESULT CALLBACK
TREEVIEW_Edit_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, 
							LPARAM lParam);

LRESULT WINAPI
TREEVIEW_EndEditLabelNow (HWND hwnd, WPARAM wParam, LPARAM lParam);


/* helper functions. Work with the assumption that validity of operands 
   is checked beforehand, and that tree state is valid.  */

/* FIXME: MS documentation says `GetNextVisibleItem' returns NULL 
   if not succesfull'. Probably only applies to derefencing infoPtr
   (ie we are offered a valid treeview structure)
   and not whether there is a next `visible' child. 
   FIXME: check other failures.
 */

/***************************************************************************
 * This method returns the TREEVIEW_ITEM object given the handle
 */
static TREEVIEW_ITEM* TREEVIEW_ValidItem(
  TREEVIEW_INFO *infoPtr,
  HTREEITEM  handle)
{
  if ((!handle) || (handle>infoPtr->uMaxHandle)) 
    return NULL;

  if (tv_test_bit ((INT)handle, infoPtr->freeList)) 
    return NULL;

  return &infoPtr->items[(INT)handle];
}

/***************************************************************************
 * This method returns the last expanded child item of a tree node
 */
static TREEVIEW_ITEM *TREEVIEW_GetLastListItem(
  TREEVIEW_INFO *infoPtr,
  TREEVIEW_ITEM *tvItem)

{
  TREEVIEW_ITEM *wineItem = tvItem;

  /* 
   * Get this item last sibling 
   */
  while (wineItem->sibling) 
 	  wineItem=& infoPtr->items [(INT)wineItem->sibling];

  /* 
   * If the last sibling has expanded children, restart.
   */
  if ( ( wineItem->cChildren > 0 ) && ( wineItem->state & TVIS_EXPANDED) )
    return TREEVIEW_GetLastListItem(
             infoPtr, 
             &(infoPtr->items[(INT)wineItem->firstChild]));

  return wineItem;
}

/***************************************************************************
 * This method returns the previous physical item in the list not 
 * considering the tree hierarchy.
 */
static TREEVIEW_ITEM *TREEVIEW_GetPrevListItem(
  TREEVIEW_INFO *infoPtr, 
  TREEVIEW_ITEM *tvItem)
{
  if (tvItem->upsibling) 
  {
    /* 
     * This item has a upsibling, get the last item.  Since, GetLastListItem
     * first looks at siblings, we must feed it with the first child.
     */
    TREEVIEW_ITEM *upItem = &infoPtr->items[(INT)tvItem->upsibling];
    
    if ( ( upItem->cChildren > 0 ) && ( upItem->state & TVIS_EXPANDED) )
      return TREEVIEW_GetLastListItem( 
               infoPtr, 
               &infoPtr->items[(INT)upItem->firstChild]);
    else
      return upItem;
  }
  else
  {
    /*
     * this item does not have a upsibling, get the parent
     */
    if (tvItem->parent) 
      return &infoPtr->items[(INT)tvItem->parent];
  }

  return NULL;
}


/***************************************************************************
 * This method returns the next physical item in the treeview not 
 * considering the tree hierarchy.
 */
static TREEVIEW_ITEM *TREEVIEW_GetNextListItem(
  TREEVIEW_INFO *infoPtr, 
  TREEVIEW_ITEM *tvItem)
{
  TREEVIEW_ITEM *wineItem = NULL;

  /* 
   * If this item has children and is expanded, return the first child
   */
  if ((tvItem->firstChild) && (tvItem->state & TVIS_EXPANDED)) 
		return (& infoPtr->items[(INT)tvItem->firstChild]);


  /*
   * try to get the sibling
   */
  if (tvItem->sibling) 
		return (& infoPtr->items[(INT)tvItem->sibling]);

  /*
   * Otherwise, get the parent's sibling.
   */
  wineItem=tvItem;
  while (wineItem->parent) {
    wineItem=& infoPtr->items [(INT)wineItem->parent];
  	if (wineItem->sibling) 
      return (& infoPtr->items [(INT)wineItem->sibling]);
  } 

  return NULL;  
}

/***************************************************************************
 * This method returns the nth item starting at the given item.  It returns 
 * the last item (or first) we we run out of items.
 *
 * Will scroll backward if count is <0.
 *             forward if count is >0.
 */
static TREEVIEW_ITEM *TREEVIEW_GetListItem(
  TREEVIEW_INFO *infoPtr, 
  TREEVIEW_ITEM *tvItem,
  LONG          count)
{
  TREEVIEW_ITEM *previousItem = NULL;
  TREEVIEW_ITEM *wineItem     = tvItem;
  LONG          iter          = 0;

  if      (count > 0)
  {
    /* Find count item downward */
    while ((iter++ < count) && (wineItem != NULL))
    {
      /* Keep a pointer to the previous in case we ask for more than we got */
      previousItem = wineItem; 
      wineItem     = TREEVIEW_GetNextListItem(infoPtr, wineItem);
    } 

    if (wineItem == NULL)
      wineItem = previousItem;
  }
  else if (count < 0)
  {
    /* Find count item upward */
    while ((iter-- > count) && (wineItem != NULL))
    {
      /* Keep a pointer to the previous in case we ask for more than we got */
      previousItem = wineItem; 
      wineItem = TREEVIEW_GetPrevListItem(infoPtr, wineItem);
    }

    if (wineItem == NULL)
      wineItem = previousItem;
  }
  else
    wineItem = NULL;

  return wineItem;
}

 
/***************************************************************************
 * This method 
 */
static void TREEVIEW_RemoveAllChildren(
  HWND hwnd,
  TREEVIEW_ITEM *parentItem)
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
 TREEVIEW_ITEM *killItem;
 INT	kill;
 
 kill=(INT)parentItem->firstChild;
 while (kill) {
 	tv_set_bit ( kill, infoPtr->freeList);
 	killItem=& infoPtr->items[kill];
	if (killItem->pszText!=LPSTR_TEXTCALLBACKA) 
		COMCTL32_Free (killItem->pszText);
 	TREEVIEW_SendTreeviewNotify (hwnd, TVN_DELETEITEM, 0, (HTREEITEM)kill, 0);
	if (killItem->firstChild) 
			TREEVIEW_RemoveAllChildren (hwnd, killItem);
	kill=(INT)killItem->sibling;
 }

 if (parentItem->cChildren>0) {
 	infoPtr->uNumItems -= parentItem->cChildren;
 	parentItem->firstChild = 0;
 	parentItem->cChildren  = 0;
 }

}


static void
TREEVIEW_RemoveItem (HWND hwnd, TREEVIEW_ITEM *wineItem)

{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
 TREEVIEW_ITEM *parentItem, *upsiblingItem, *siblingItem;
 INT iItem;

 iItem=(INT)wineItem->hItem;
 tv_set_bit(iItem,infoPtr->freeList);
 infoPtr->uNumItems--;
 parentItem=NULL;
 if (wineItem->pszText!=LPSTR_TEXTCALLBACKA) 
	COMCTL32_Free (wineItem->pszText);

 TREEVIEW_SendTreeviewNotify (hwnd, TVN_DELETEITEM, 0, (HTREEITEM)iItem, 0);

 if (wineItem->firstChild) 
 	TREEVIEW_RemoveAllChildren (hwnd,wineItem);

 if (wineItem->parent) {
	parentItem=& infoPtr->items [(INT)wineItem->parent];
	switch (parentItem->cChildren) {
		case I_CHILDRENCALLBACK: 
				FIXME("we don't handle I_CHILDRENCALLBACK yet\n");
				break;
		case 1:
			parentItem->cChildren=0;
			parentItem->firstChild=0;    
			return;
		default:
			parentItem->cChildren--;
			if ((INT)parentItem->firstChild==iItem) 
				parentItem->firstChild=wineItem->sibling;
		}
 }

 if (iItem==(INT)infoPtr->TopRootItem) 
	infoPtr->TopRootItem=(HTREEITEM)wineItem->sibling;
 if (wineItem->upsibling) {
	upsiblingItem=& infoPtr->items [(INT)wineItem->upsibling];
	upsiblingItem->sibling=wineItem->sibling;
 }
 if (wineItem->sibling) {
	siblingItem=& infoPtr->items [(INT)wineItem->sibling];
	siblingItem->upsibling=wineItem->upsibling;
 }
}


/* Note:TREEVIEW_RemoveTree doesn't remove infoPtr itself */

static void TREEVIEW_RemoveTree (HWND hwnd)
					   
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
 TREEVIEW_ITEM *killItem;
 int i;

 for (i=1; i<=(INT)infoPtr->uMaxHandle; i++) 
	if (!tv_test_bit (i, infoPtr->freeList)) {
		killItem=& infoPtr->items [i];	
		if (killItem->pszText!=LPSTR_TEXTCALLBACKA)
			COMCTL32_Free (killItem->pszText);
		TREEVIEW_SendTreeviewNotify 
					(hwnd, TVN_DELETEITEM, 0, killItem->hItem, 0);
		} 

 if (infoPtr->uNumPtrsAlloced) {
        COMCTL32_Free (infoPtr->items);
        COMCTL32_Free (infoPtr->freeList);
        infoPtr->uNumItems=0;
        infoPtr->uNumPtrsAlloced=0;
        infoPtr->uMaxHandle=0;
    }   
}


static LRESULT
TREEVIEW_GetImageList (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

  TRACE("\n");
  if (infoPtr==NULL) return 0;

  if ((INT)wParam == TVSIL_NORMAL) 
	return (LRESULT) infoPtr->himlNormal;
  if ((INT)wParam == TVSIL_STATE) 
	return (LRESULT) infoPtr->himlState;

  return 0;
}

static LRESULT
TREEVIEW_SetImageList (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
    HIMAGELIST himlTemp;

    TRACE("\n");
    switch ((INT)wParam) {
	case TVSIL_NORMAL:
	    himlTemp = infoPtr->himlNormal;
	    infoPtr->himlNormal = (HIMAGELIST)lParam;
	    return (LRESULT)himlTemp;

	case TVSIL_STATE:
	    himlTemp = infoPtr->himlState;
	    infoPtr->himlState = (HIMAGELIST)lParam;
	    return (LRESULT)himlTemp;
    }

    return (LRESULT)NULL;
}


static LRESULT
TREEVIEW_SetItemHeight (HWND hwnd, WPARAM wParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  INT cx,cy,prevHeight=infoPtr->uItemHeight;
  HDC hdc;

  TRACE("\n");
  if (wParam==-1) {
	hdc=GetDC (hwnd);
	infoPtr->uItemHeight=-1;
	return prevHeight;
  }

  ImageList_GetIconSize (infoPtr->himlNormal, &cx, &cy);

  if (wParam>cy) cy=wParam;
  infoPtr->uItemHeight=cy;

  if (!( GetWindowLongA( hwnd, GWL_STYLE) & TVS_NONEVENHEIGHT))
	infoPtr->uItemHeight = (INT) wParam & 0xfffffffe;
  return prevHeight;
}

static LRESULT
TREEVIEW_GetItemHeight (HWND hwnd)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  
  TRACE("\n");
  return infoPtr->uItemHeight;
}
  
static LRESULT
TREEVIEW_SetTextColor (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  COLORREF prevColor=infoPtr->clrText;

  TRACE("\n");
  infoPtr->clrText=(COLORREF) lParam;
  return (LRESULT) prevColor;
}

static LRESULT
TREEVIEW_GetBkColor (HWND hwnd)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
	
  TRACE("\n");
  return (LRESULT) infoPtr->clrText;
}

static LRESULT
TREEVIEW_SetBkColor (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  COLORREF prevColor=infoPtr->clrBk;

  TRACE("\n");
  infoPtr->clrBk=(COLORREF) lParam;
  return (LRESULT) prevColor;
}

static LRESULT
TREEVIEW_GetTextColor (HWND hwnd)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
	
  TRACE("\n");
  return (LRESULT) infoPtr->clrBk;
}


/* cdmode: custom draw mode as received from app. in first NMCUSTOMDRAW 
           notification */

#define TREEVIEW_LEFT_MARGIN 8


static void
TREEVIEW_DrawItem (HWND hwnd, HDC hdc, TREEVIEW_ITEM *wineItem)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

  INT   center,xpos,cx,cy, cditem, drawmode;
  HFONT hOldFont;
  UINT  uTextJustify = DT_LEFT;
  RECT  r;

 
  if (wineItem->state & TVIS_BOLD) 
  	hOldFont = SelectObject (hdc, infoPtr->hBoldFont);
  else 
  	hOldFont = SelectObject (hdc, infoPtr->hFont);

  cditem=0;
  if (infoPtr->cdmode & CDRF_NOTIFYITEMDRAW) {
		drawmode=CDDS_ITEMPREPAINT;

		if (infoPtr->cdmode & CDRF_NOTIFYSUBITEMDRAW) 
      drawmode|=CDDS_SUBITEM;

		cditem=TREEVIEW_SendCustomDrawItemNotify (hwnd, hdc, wineItem, drawmode);

		TRACE("cditem:%d\n",cditem);

		if (cditem & CDRF_SKIPDEFAULT) 
			return;
	}

  /* 
   * Set drawing starting points 
   */
  r      = wineItem->rect;               /* this item rectangle */
  center = (r.top+r.bottom)/2;           /* this item vertical center */
  xpos   = r.left + TREEVIEW_LEFT_MARGIN;/* horizontal starting point */

  /* 
   * Display the tree hierarchy 
   */
  if ( GetWindowLongA( hwnd, GWL_STYLE) & TVS_HASLINES) 
  {
    /* 
     * Write links to parent node 
     * we draw the L starting from the child to the parent
     *
     * points[0] is attached to the current item
     * points[1] is the L corner
     * points[2] is attached to the parent or the up sibling
     */
    if ( GetWindowLongA( hwnd, GWL_STYLE) & TVS_LINESATROOT) 
    {
      TREEVIEW_ITEM *upNode    = NULL;
     	BOOL  hasParentOrSibling = TRUE;
      RECT  upRect             = {0,0,0,0};
      HPEN  hOldPen, hnewPen;
    	POINT points[3];
      /* 
       * determine the target location of the line at root, either be linked
       * to the up sibling or to the parent node.
       */
      if (wineItem->upsibling)
      	upNode  = TREEVIEW_ValidItem (infoPtr, wineItem->upsibling);
      else if (wineItem->parent)
      	upNode  = TREEVIEW_ValidItem (infoPtr, wineItem->parent);
      else
        hasParentOrSibling = FALSE;

      if (upNode)
        upRect = upNode->rect;

      if ( wineItem->iLevel == 0 )
      {
        points[2].x = points[1].x = upRect.left+8;
        points[0].x = points[2].x + 10;
        points[2].y = upRect.bottom-3;      
        points[1].y = points[0].y = center;
      }
      else
      {
        points[2].x = points[1].x = 8 + (20*wineItem->iLevel); 
        points[2].y = ( upNode->cChildren == 0) ? 
                        upRect.top :        /* is linked to the "L" above */
                        ( wineItem->upsibling != NULL) ? 
                          upRect.bottom-3:  /* is linked to an icon       */
                          upRect.bottom+1;  /* is linked to a +/- box     */
        points[1].y = points[0].y = center;
        points[0].x = points[1].x + 10; 
      }
    
      /* 
       * Get a doted pen
       */ 
      hnewPen = CreatePen(PS_DOT, 0, GetSysColor(COLOR_WINDOWTEXT) );
      hOldPen = SelectObject( hdc, hnewPen );
  
      if (hasParentOrSibling)
        Polyline (hdc,points,3); 
      else
        Polyline (hdc,points,2); 
      
      DeleteObject(hnewPen);
      SelectObject(hdc, hOldPen);
    }
  }

  /* 
   * Display the (+/-) signs
   */
  if (wineItem->iLevel != 0)/*  update position only for non root node */
    xpos+=(5*wineItem->iLevel);

  if (( GetWindowLongA( hwnd, GWL_STYLE) & TVS_HASBUTTONS) && 
      ( GetWindowLongA( hwnd, GWL_STYLE) & TVS_HASLINES))
  {
	  if ( (wineItem->cChildren) ||
	       (wineItem->cChildren == I_CHILDRENCALLBACK))
    {
      /* Setup expand box coordinate to facilitate the LMBClick handling */
      wineItem->expandBox.left   = xpos-4;
      wineItem->expandBox.top    = center-4;
      wineItem->expandBox.right  = xpos+5;
      wineItem->expandBox.bottom = center+5;

  		Rectangle (
        hdc, 
        wineItem->expandBox.left, 
        wineItem->expandBox.top , 
        wineItem->expandBox.right, 
        wineItem->expandBox.bottom);

  		MoveToEx (hdc, xpos-2, center, NULL);
  		LineTo   (hdc, xpos+3, center);
  
  		if (!(wineItem->state & TVIS_EXPANDED)) {
  			MoveToEx (hdc, xpos,   center-2, NULL);
  			LineTo   (hdc, xpos,   center+3);
  	  }
    }
  }

  /* 
   * Display the image assiciated with this item
   */
  xpos += 13; /* update position */
  if (wineItem->mask & (TVIF_IMAGE|TVIF_SELECTEDIMAGE)) {
    INT        imageIndex;
    HIMAGELIST *himlp = NULL;

	  if (infoPtr->himlNormal) 
      himlp=&infoPtr->himlNormal; /* get the image list */

  	if ( (wineItem->state & TVIS_SELECTED) && 
         (wineItem->iSelectedImage)) { 
        
      /* State images are displayed to the left of the Normal image*/
      if (infoPtr->himlState) 
        himlp=&infoPtr->himlState;

      /* The item is curently selected */
		  if (wineItem->iSelectedImage == I_IMAGECALLBACK) 
  			TREEVIEW_SendDispInfoNotify (
          hwnd, 
          wineItem, 
          TVN_GETDISPINFO, 
          TVIF_SELECTEDIMAGE);

      imageIndex = wineItem->iSelectedImage;

	  } else { 
      /* This item is not selected */
		  if (wineItem->iImage == I_IMAGECALLBACK) 
			  TREEVIEW_SendDispInfoNotify ( 
          hwnd, 
          wineItem, 
          TVN_GETDISPINFO, 
          TVIF_IMAGE);

      imageIndex = wineItem->iImage;
  	}
 
    if (himlp)
    { 
      /* We found an image to display? Draw it. */
     	ImageList_Draw (
        *himlp, 
        wineItem->iImage,
        hdc, 
        xpos-2, 
        r.top+1, 
        ILD_NORMAL);

   	  ImageList_GetIconSize (*himlp, &cx, &cy);
   	  xpos+=cx;
    }
  }

  /* 
   * Display the text assiciated with this item
   */
  r.left=xpos;
  if ((wineItem->mask & TVIF_TEXT) && (wineItem->pszText)) 
  {
    COLORREF oldBkColor = 0;
    COLORREF oldTextColor = 0;
    INT      oldBkMode;

    r.left += 3;
    r.right -= 3;

    wineItem->text.left  = r.left;  
    wineItem->text.right = r.right;
    wineItem->text.top   = r.top;
    wineItem->text.bottom= r.bottom;

    if (wineItem->state & (TVIS_SELECTED | TVIS_DROPHILITED) ) {
      oldBkMode    = SetBkMode   (hdc, OPAQUE);
      oldBkColor   = SetBkColor  (hdc, GetSysColor( COLOR_HIGHLIGHT));
      oldTextColor = SetTextColor(hdc, GetSysColor( COLOR_HIGHLIGHTTEXT));
    } 
    else 
    {
      oldBkMode    = SetBkMode(hdc, TRANSPARENT);
      oldTextColor = SetTextColor(hdc, GetSysColor( COLOR_WINDOWTEXT));
    }

    if (wineItem->pszText== LPSTR_TEXTCALLBACKA) {
      TRACE("LPSTR_TEXTCALLBACK\n");
      TREEVIEW_SendDispInfoNotify (hwnd, wineItem, TVN_GETDISPINFO, TVIF_TEXT);
    }

    /* Draw it */
    DrawTextA (
      hdc, 
      wineItem->pszText, 
      lstrlenA(wineItem->pszText), 
      &wineItem->text, 
      uTextJustify | DT_VCENTER | DT_SINGLELINE ); 

    /* Obtain the text coordinate */
    DrawTextA (
      hdc, 
      wineItem->pszText, 
      lstrlenA(wineItem->pszText), 
      &wineItem->text, 
      uTextJustify | DT_VCENTER | DT_SINGLELINE | DT_CALCRECT); 

    /* Restore the hdc state */
    SetTextColor( hdc, oldTextColor);

    if (oldBkMode != TRANSPARENT)
      SetBkMode(hdc, oldBkMode);
    if (wineItem->state & (TVIS_SELECTED | TVIS_DROPHILITED))
      SetBkColor (hdc, oldBkColor);

    /* Draw the box arround the selected item */
    if (wineItem->state & TVIS_SELECTED ) 
    {
      HPEN  hnewPen     = CreatePen(PS_DOT, 0, GetSysColor(COLOR_WINDOWTEXT) );
      HPEN  hOldPen     = SelectObject( hdc, hnewPen );
      POINT points[4];
      
      points[0].x = wineItem->text.left-1;
      points[0].y = wineItem->text.top+1; 
      points[1].x = wineItem->text.right;
      points[1].y = wineItem->text.top+1; 
      points[2].x = wineItem->text.right;
      points[2].y = wineItem->text.bottom; 
      points[3].x = wineItem->text.left-1;
      points[3].y = wineItem->text.bottom;

      Polyline (hdc,points,4); 

      DeleteObject(hnewPen);
      SelectObject(hdc, hOldPen);
    }
  }

  if (cditem & CDRF_NOTIFYPOSTPAINT)
		TREEVIEW_SendCustomDrawItemNotify (hwnd, hdc, wineItem, CDDS_ITEMPOSTPAINT);

  SelectObject (hdc, hOldFont);
}

static LRESULT
TREEVIEW_GetItemRect (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  TREEVIEW_ITEM *wineItem;
  HTREEITEM     *iItem;
  LPRECT        lpRect   = (LPRECT)lParam;

  TRACE("\n");
  /* 
   * validate parameters
   */
  if ( (infoPtr==NULL) || (lpRect == NULL) ) 
    return FALSE;

  if (infoPtr->Timer & TV_REFRESH_TIMER_SET)          
		TREEVIEW_Refresh (hwnd);	/* we want a rect for the current view */
 
  /* 
   * retrive the item ptr
   */ 
  iItem = (HTREEITEM *) lParam;
  wineItem = TREEVIEW_ValidItem (infoPtr, *iItem);
  if ((!wineItem) || (!wineItem->visible)) 
    return FALSE;

  /* 
   * If wParam is TRUE return the text size otherwise return 
   * the whole item size	
   */
  if ((INT) wParam) {
  	lpRect->left	  = wineItem->text.left;
    lpRect->right	  = wineItem->text.right;
    lpRect->bottom	= wineItem->text.bottom;
    lpRect->top	    = wineItem->text.top;
  } else {
    lpRect->left 	  = wineItem->rect.left;
    lpRect->right	  = wineItem->rect.right;
    lpRect->bottom  = wineItem->rect.bottom;
    lpRect->top	    = wineItem->rect.top;
  }

  TRACE("[L:%d R:%d T:%d B:%d]\n", 
      lpRect->left,lpRect->right,
			lpRect->top,lpRect->bottom);

  return TRUE;
}

static LRESULT
TREEVIEW_GetVisibleCount (HWND hwnd,  WPARAM wParam, LPARAM lParam)

{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

  return (LRESULT) infoPtr->uVisibleHeight / infoPtr->uRealItemHeight;
}


static LRESULT
TREEVIEW_SetItemA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  TREEVIEW_ITEM *wineItem;
  TVITEMEXA *tvItem;
  INT iItem,len;

  tvItem=(LPTVITEMEXA) lParam;
  iItem=(INT)tvItem->hItem;
  TRACE("item %d,mask %x\n",iItem,tvItem->mask);

  wineItem = TREEVIEW_ValidItem (infoPtr, (HTREEITEM)iItem);
  if (!wineItem) return FALSE;

  if (tvItem->mask & TVIF_CHILDREN) {
        wineItem->cChildren=tvItem->cChildren;
  }

  if (tvItem->mask & TVIF_IMAGE) {
       wineItem->iImage=tvItem->iImage;
  }

  if (tvItem->mask & TVIF_INTEGRAL) {
        wineItem->iIntegral=tvItem->iIntegral; 
        FIXME(" TVIF_INTEGRAL not supported yet\n");
  }

  if (tvItem->mask & TVIF_PARAM) {
        wineItem->lParam=tvItem->lParam;
  }

  if (tvItem->mask & TVIF_SELECTEDIMAGE) {
        wineItem->iSelectedImage=tvItem->iSelectedImage;
  }

  if (tvItem->mask & TVIF_STATE) {
        wineItem->state=tvItem->state & tvItem->stateMask;
  }

  if (tvItem->mask & TVIF_TEXT) {
		if (tvItem->pszText!=LPSTR_TEXTCALLBACKA) {
        len=lstrlenA (tvItem->pszText);
        if (len>wineItem->cchTextMax) 
			wineItem->pszText= COMCTL32_ReAlloc (wineItem->pszText, len+1);
        lstrcpynA (wineItem->pszText, tvItem->pszText,len);
		} else {
			if (wineItem->cchTextMax) {
				COMCTL32_Free (wineItem->pszText);
				wineItem->cchTextMax=0;
			}
		wineItem->pszText=LPSTR_TEXTCALLBACKA;
		}
   }

  return TRUE;
}


static void
TREEVIEW_Refresh (HWND hwnd)

{
    TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
	TEXTMETRICA tm;
	HBRUSH hbrBk;
    RECT rect;
	HDC hdc;
    INT iItem, indent, x, y, cx, height, itemHeight;
    INT viewtop,viewbottom,viewleft,viewright;
    TREEVIEW_ITEM *wineItem, *prevItem;

    TRACE("\n");

	hdc=GetDC (hwnd);

    if (infoPtr->Timer & TV_REFRESH_TIMER_SET) {
		KillTimer (hwnd, TV_REFRESH_TIMER);
		infoPtr->Timer &= ~TV_REFRESH_TIMER_SET;
    }

    
    GetClientRect (hwnd, &rect);
    if ((rect.left-rect.right ==0) || (rect.top-rect.bottom==0)) return;

    infoPtr->cdmode=TREEVIEW_SendCustomDrawNotify 
						(hwnd, CDDS_PREPAINT, hdc, rect);

	if (infoPtr->cdmode==CDRF_SKIPDEFAULT) {
		  ReleaseDC (hwnd, hdc);
		  return;
	}

	infoPtr->uVisibleHeight= rect.bottom-rect.top;
	infoPtr->uVisibleWidth= rect.right-rect.left;

    viewtop=infoPtr->cy;
    viewbottom=infoPtr->cy + rect.bottom-rect.top;
    viewleft=infoPtr->cx;
    viewright=infoPtr->cx + rect.right-rect.left;


    /* draw background */
    
    hbrBk = GetSysColorBrush (COLOR_WINDOW);
    FillRect(hdc, &rect, hbrBk);


    iItem=(INT)infoPtr->TopRootItem;
    infoPtr->firstVisible=0;
    wineItem=NULL;
    indent=0;
    x=y=0;
    TRACE("[%d %d %d %d]\n",viewtop,viewbottom,viewleft,viewright);

    while (iItem) {
		prevItem=wineItem;
        wineItem= & infoPtr->items[iItem];
		wineItem->iLevel=indent;

        ImageList_GetIconSize (infoPtr->himlNormal, &cx, &itemHeight);
        if (infoPtr->uItemHeight>itemHeight)
		    itemHeight=infoPtr->uItemHeight;

	    GetTextMetricsA (hdc, &tm);
 	    if ((tm.tmHeight + tm.tmExternalLeading) > itemHeight)
		     itemHeight=tm.tmHeight + tm.tmExternalLeading;

        infoPtr->uRealItemHeight=itemHeight;	


/* FIXME: remove this in later stage  */
/*
		if (wineItem->pszText!=LPSTR_TEXTCALLBACK32A) 
		TRACE (treeview, "%d %d [%d %d %d %d] (%s)\n",y,x,
			wineItem->rect.top, wineItem->rect.bottom,
			wineItem->rect.left, wineItem->rect.right,
			wineItem->pszText);
		else 
		TRACE (treeview, "%d [%d %d %d %d] (CALLBACK)\n",
				wineItem->hItem,
				wineItem->rect.top, wineItem->rect.bottom,
				wineItem->rect.left, wineItem->rect.right);
*/

		height=itemHeight * wineItem->iIntegral +1;
		if ((y >= viewtop) && (y <= viewbottom) &&
	    	(x >= viewleft  ) && (x <= viewright)) {
				wineItem->visible = TRUE;
        		wineItem->rect.top = y - infoPtr->cy + rect.top;
        		wineItem->rect.bottom = wineItem->rect.top + height ;
         		wineItem->rect.left = x - infoPtr->cx + rect.left;
        		wineItem->rect.right = rect.right;
			if (!infoPtr->firstVisible)
				infoPtr->firstVisible=wineItem->hItem;
       		TREEVIEW_DrawItem (hwnd, hdc, wineItem);
		}
		else {
			wineItem->visible   = FALSE;
			wineItem->rect.left = wineItem->rect.top    = 0;
			wineItem->rect.right= wineItem->rect.bottom = 0;
			wineItem->text.left = wineItem->text.top    = 0;
			wineItem->text.right= wineItem->text.bottom = 0;
 		}

		/* look up next item */
	
		if ((wineItem->firstChild) && (wineItem->state & TVIS_EXPANDED)) {
			iItem=(INT)wineItem->firstChild;
			indent++;
			x+=infoPtr->uIndent;
			if (x>infoPtr->uTotalWidth) 	
				infoPtr->uTotalWidth=x;
		}
		else {
			iItem=(INT)wineItem->sibling;
			while ((!iItem) && (indent>0)) {
				indent--;
				x-=infoPtr->uIndent;
				prevItem=wineItem;
				wineItem=&infoPtr->items[(INT)wineItem->parent];
				iItem=(INT)wineItem->sibling;
			}
		}
        y +=height;
    }				/* while */

/* FIXME: infoPtr->uTotalWidth should also take item label into account */
/* FIXME: or should query item sizes (ie check CDRF_NEWFONT) */

    infoPtr->uTotalHeight=y;
    if (y >= (viewbottom-viewtop)) {
 		if (!(infoPtr->uInternalStatus & TV_VSCROLL))
			ShowScrollBar (hwnd, SB_VERT, TRUE);
		infoPtr->uInternalStatus |=TV_VSCROLL;
 		SetScrollRange (hwnd, SB_VERT, 0, 
					y - infoPtr->uVisibleHeight, FALSE);
		SetScrollPos (hwnd, SB_VERT, infoPtr->cy, TRUE);
	}
    else {
		if (infoPtr->uInternalStatus & TV_VSCROLL) 
			ShowScrollBar (hwnd, SB_VERT, FALSE);
		infoPtr->uInternalStatus &= ~TV_VSCROLL;
	}


	if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT) 
    	infoPtr->cdmode=TREEVIEW_SendCustomDrawNotify 
								(hwnd, CDDS_POSTPAINT, hdc, rect);

    ReleaseDC (hwnd, hdc);
    TRACE("done\n");
}


static LRESULT 
TREEVIEW_HandleTimer (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

  TRACE(" %d\n",wParam);
  if (!infoPtr) return FALSE;

  switch (wParam) {
	case TV_REFRESH_TIMER:
		KillTimer (hwnd, TV_REFRESH_TIMER);
		infoPtr->Timer &= ~TV_REFRESH_TIMER_SET;
    InvalidateRect(hwnd, NULL, FALSE);
		return 0;
	case TV_EDIT_TIMER:
		KillTimer (hwnd, TV_EDIT_TIMER);
		infoPtr->Timer &= ~TV_EDIT_TIMER_SET;
		return 0;
	default:
		ERR("got unknown timer\n");
 }
		
 return 1;
}


static void
TREEVIEW_QueueRefresh (HWND hwnd)

{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

 TRACE("\n");
 if (infoPtr->Timer & TV_REFRESH_TIMER_SET) {
	KillTimer (hwnd, TV_REFRESH_TIMER);
 }

 SetTimer (hwnd, TV_REFRESH_TIMER, TV_REFRESH_DELAY, 0);
 infoPtr->Timer|=TV_REFRESH_TIMER_SET;
}


static LRESULT
TREEVIEW_GetItemA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  LPTVITEMEXA    tvItem;
  TREEVIEW_ITEM *wineItem;
  INT         iItem;

  tvItem=(LPTVITEMEXA) lParam;
  iItem=(INT)tvItem->hItem;

  wineItem = TREEVIEW_ValidItem (infoPtr, (HTREEITEM)iItem);
  if (!wineItem) return FALSE;

   if (tvItem->mask & TVIF_CHILDREN) {
		if (TVIF_CHILDREN==I_CHILDRENCALLBACK) 
			FIXME("I_CHILDRENCALLBACK not supported\n");
        tvItem->cChildren=wineItem->cChildren;
   }

   if (tvItem->mask & TVIF_HANDLE) {
        tvItem->hItem=wineItem->hItem;
   }

   if (tvItem->mask & TVIF_IMAGE) {
        tvItem->iImage=wineItem->iImage;
   }

   if (tvItem->mask & TVIF_INTEGRAL) {
        tvItem->iIntegral=wineItem->iIntegral; 
		FIXME(" TVIF_INTEGRAL not supported yet\n");
   }

   /* undocumented: windows ignores TVIF_PARAM and
	 * always sets lParam
	 */
   tvItem->lParam=wineItem->lParam;

   if (tvItem->mask & TVIF_SELECTEDIMAGE) {
        tvItem->iSelectedImage=wineItem->iSelectedImage;
   }

   if (tvItem->mask & TVIF_STATE) {
        tvItem->state=wineItem->state & tvItem->stateMask;
   }

   if (tvItem->mask & TVIF_TEXT) {
	if (wineItem->pszText == LPSTR_TEXTCALLBACKA) {
	    tvItem->pszText = LPSTR_TEXTCALLBACKA;  /* FIXME:send notification? */
		ERR(" GetItem called with LPSTR_TEXTCALLBACK\n");
	}
	else if (wineItem->pszText) {
	    lstrcpynA (tvItem->pszText, wineItem->pszText, tvItem->cchTextMax);
	}
   }

  TRACE("item %d<%p>, txt %p, img %p, action %x\n", 
    iItem,
    tvItem, 
    tvItem->pszText, 
    & tvItem->iImage, 
    tvItem->mask);

  return TRUE;
}


/* FIXME: check implementation of TVGN_NEXT/TVGN_NEXTVISIBLE */

static LRESULT
TREEVIEW_GetNextItem (HWND hwnd, WPARAM wParam, LPARAM lParam)

{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  TREEVIEW_ITEM *wineItem, *returnItem;
  INT iItem, retval, flag;


  if (!infoPtr) return FALSE;
  flag  = (INT) wParam;
  iItem = (INT) lParam;
  retval=0;
  switch (flag) {
	case TVGN_ROOT: retval=(INT)infoPtr->TopRootItem;
					break;
	case TVGN_CARET:retval=(INT)infoPtr->selectedItem;
					break;
	case TVGN_FIRSTVISIBLE: 
         			TREEVIEW_Refresh (hwnd);       
/* FIXME:we should only recalculate, not redraw */
					retval=(INT)infoPtr->firstVisible;
					break;
	case TVGN_DROPHILITE:
					retval=(INT)infoPtr->dropItem;
					break;
	}
  if (retval) {
  		TRACE("flags:%x, returns %u\n", flag, retval);
		return retval;
  }
 
  wineItem = TREEVIEW_ValidItem (infoPtr, (HTREEITEM)iItem);
  returnItem = NULL;
  if (!wineItem) return FALSE;

  switch (flag)	{
	case TVGN_NEXT: retval=(INT)wineItem->sibling;
					break;
	case TVGN_PREVIOUS:	
					retval=(INT)wineItem->upsibling;
					break;
	case TVGN_PARENT:
					retval=(INT)wineItem->parent;
					break;
	case TVGN_CHILD:
					retval=(INT)wineItem->firstChild;
					break;
	case TVGN_LASTVISIBLE:  
					returnItem=TREEVIEW_GetLastListItem (infoPtr,wineItem);
					break;
	case TVGN_NEXTVISIBLE:  
					returnItem=TREEVIEW_GetNextListItem (infoPtr,wineItem);
					break;
	case TVGN_PREVIOUSVISIBLE: 
					returnItem=TREEVIEW_GetPrevListItem (infoPtr, wineItem);
					break;
	default:		FIXME("Unknown msg %x,item %x\n", flag,iItem);
					break;
	}

  if (returnItem) {
		  TRACE("flags:%x, item %d;returns %d\n", flag, iItem,
							(INT)returnItem->hItem);
		  return (INT)returnItem->hItem;
  }

  TRACE("flags:%x, item %d;returns %d\n", flag, iItem,retval);
  return retval;
}


static LRESULT
TREEVIEW_GetCount (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

 TRACE(" %d\n",infoPtr->uNumItems);
 return (LRESULT) infoPtr->uNumItems;
}

/***************************************************************************
 * This method does the chaining of the insertion of a treeview item 
 * before an item.
 */
static void TREEVIEW_InsertBefore(
    TREEVIEW_INFO *infoPtr,
    TREEVIEW_ITEM *newItem, 
    TREEVIEW_ITEM *sibling,
    TREEVIEW_ITEM *parent)
{
  HTREEITEM     siblingHandle   = 0;
  HTREEITEM     upSiblingHandle = 0;
  TREEVIEW_ITEM *upSibling      = NULL;

  if (newItem == NULL)
    ERR("NULL newItem, impossible condition\n");

  if (parent == NULL)
    ERR("NULL parent, impossible condition\n");

  if (sibling != NULL) /* Insert before this sibling for this parent */
  { 
    /* Store the new item sibling up sibling and sibling tem handle */
    siblingHandle   = sibling->hItem;
    upSiblingHandle = sibling->upsibling;
    /* As well as a pointer to the upsibling sibling object */
    if ( (INT)sibling->upsibling != 0 )
      upSibling = &infoPtr->items[(INT)sibling->upsibling];
  
    /* Adjust the sibling pointer */
    sibling->upsibling = newItem->hItem;
    
    /* Adjust the new item pointers */
    newItem->upsibling = upSiblingHandle;
    newItem->sibling   = siblingHandle;
    
    /* Adjust the up sibling pointer */
    if ( upSibling != NULL )        
      upSibling->sibling = newItem->hItem;
    else
      /* this item is the first child of this parent, adjust parent pointers */
      parent->firstChild = newItem->hItem;
  }
  else /* Insert as first child of this parent */
    parent->firstChild = newItem->hItem;
}

/***************************************************************************
 * This method does the chaining of the insertion of a treeview item 
 * after an item.
 */
static void TREEVIEW_InsertAfter(
    TREEVIEW_INFO *infoPtr,
    TREEVIEW_ITEM *newItem, 
    TREEVIEW_ITEM *upSibling,
    TREEVIEW_ITEM *parent)
{
  HTREEITEM     upSiblingHandle = 0;
  HTREEITEM     siblingHandle   = 0;
  TREEVIEW_ITEM *sibling        = NULL;

  if (newItem == NULL)
    ERR("NULL newItem, impossible condition\n");

  if (parent == NULL)
    ERR("NULL parent, impossible condition\n");

  if (upSibling != NULL) /* Insert after this upsibling for this parent */
  { 
    /* Store the new item up sibling and sibling item handle */
    upSiblingHandle = upSibling->hItem;
    siblingHandle   = upSibling->sibling;
    /* As well as a pointer to the upsibling sibling object */
    if ( (INT)upSibling->sibling != 0 )
      sibling = &infoPtr->items[(INT)upSibling->sibling];
  
    /* Adjust the up sibling pointer */
    upSibling->sibling = newItem->hItem;
    
    /* Adjust the new item pointers */
    newItem->upsibling = upSiblingHandle;
    newItem->sibling   = siblingHandle;
    
    /* Adjust the sibling pointer */
    if ( sibling != NULL )        
      sibling->upsibling = newItem->hItem; 
    /*
    else 
      newItem is the last of the level, nothing else to do 
    */
  }
  else /* Insert as first child of this parent */
    parent->firstChild = newItem->hItem;
}

/***************************************************************************
 * Forward the DPA local callback to the treeview owner callback
 */
static INT WINAPI TREEVIEW_CallBackCompare( 
  LPVOID first, 
  LPVOID second, 
  LPARAM tvInfoPtr)
{
  /* Forward the call to the client define callback */
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr((HWND)tvInfoPtr);
  return (infoPtr->pCallBackSort->lpfnCompare)(
    ((TREEVIEW_ITEM*)first)->lParam,
    ((TREEVIEW_ITEM*)second)->lParam,
    infoPtr->pCallBackSort->lParam);
}

/***************************************************************************
 * Setup the treeview structure with regards of the sort method
 * and sort the children of the TV item specified in lParam
 */
LRESULT WINAPI TREEVIEW_SortChildrenCB(
  HWND   hwnd, 
  WPARAM wParam, 
  LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  TREEVIEW_ITEM *sortMe  = NULL; /* Node for which we sort the children */

  /* Obtain the TVSORTBC struct */
  infoPtr->pCallBackSort = (LPTVSORTCB)lParam;

  /* Check for a valid handle to the parent item */
  if (!TREEVIEW_ValidItem(infoPtr, infoPtr->pCallBackSort->hParent))
  {
    ERR ("invalid item hParent=%d\n", (INT)infoPtr->pCallBackSort->hParent);
    return FALSE;
  }

  /* Obtain the parent node to sort */  
  sortMe = &infoPtr->items[ (INT)infoPtr->pCallBackSort->hParent ];

  /* Make sure there is something to sort */
  if ( sortMe->cChildren > 1 ) 
  {
    /* pointer organization */
    HDPA          sortList   = DPA_Create(sortMe->cChildren);
    HTREEITEM     itemHandle = sortMe->firstChild;
    TREEVIEW_ITEM *itemPtr   = & infoPtr->items[ (INT)itemHandle ];

    /* TREEVIEW_ITEM rechaining */
    INT  count     = 0;
    VOID *item     = 0;
    VOID *nextItem = 0;
    VOID *prevItem = 0;

    /* Build the list of item to sort */
    do 
    {
      DPA_InsertPtr(
        sortList,              /* the list */
        sortMe->cChildren+1,   /* force the insertion to be an append */
        itemPtr);              /* the ptr to store */   

      /* Get the next sibling */
      itemHandle = itemPtr->sibling;
      itemPtr    = & infoPtr->items[ (INT)itemHandle ];
    } while ( itemHandle != NULL );

    /* let DPA perform the sort activity */
    DPA_Sort(
      sortList,                  /* what  */ 
      TREEVIEW_CallBackCompare,  /* how   */
      hwnd);                     /* owner */

    /* 
     * Reorganized TREEVIEW_ITEM structures. 
     * Note that we know we have at least two elements.
     */

    /* Get the first item and get ready to start... */
    item = DPA_GetPtr(sortList, count++);    
    while ( (nextItem = DPA_GetPtr(sortList, count++)) != NULL )
    {
      /* link the two current item toghether */
      ((TREEVIEW_ITEM*)item)->sibling       = ((TREEVIEW_ITEM*)nextItem)->hItem;
      ((TREEVIEW_ITEM*)nextItem)->upsibling = ((TREEVIEW_ITEM*)item)->hItem;

      if (prevItem == NULL) /* this is the first item, update the parent */
      {
        sortMe->firstChild                = ((TREEVIEW_ITEM*)item)->hItem;
        ((TREEVIEW_ITEM*)item)->upsibling = NULL;
      }
      else                  /* fix the back chaining */
      {
        ((TREEVIEW_ITEM*)item)->upsibling = ((TREEVIEW_ITEM*)prevItem)->hItem;
      }

      /* get ready for the next one */
      prevItem = item; 
      item     = nextItem;
    }

    /* the last item is pointed to by item and never has a sibling */
    ((TREEVIEW_ITEM*)item)->sibling = NULL; 

    DPA_Destroy(sortList);

    return TRUE;
  }
  return FALSE;
}


/* the method used below isn't the most memory-friendly, but it avoids 
   a lot of memory reallocations */ 

/* BTW: we waste handle 0; 0 is not an allowed handle. */

static LRESULT
TREEVIEW_InsertItemA (HWND hwnd, WPARAM wParam, LPARAM lParam)

{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  TVINSERTSTRUCTA  *ptdi;
  TVITEMEXA 	*tvItem;
  TREEVIEW_ITEM *wineItem, *parentItem, *prevsib, *sibItem;
  INT		iItem,listItems,i,len;
 
  /* Item to insert */
  ptdi = (LPTVINSERTSTRUCTA) lParam;

	/* check if memory is available */

  if (infoPtr->uNumPtrsAlloced==0) {
        infoPtr->items = COMCTL32_Alloc (TVITEM_ALLOC*sizeof (TREEVIEW_ITEM));
        infoPtr->freeList= COMCTL32_Alloc ((1+(TVITEM_ALLOC>>5)) * sizeof (INT));
        infoPtr->uNumPtrsAlloced=TVITEM_ALLOC;
	infoPtr->TopRootItem=(HTREEITEM)1;
   }

  /* 
   * Reallocate contiguous space for items 
   */
  if (infoPtr->uNumItems == (infoPtr->uNumPtrsAlloced-1) ) {
   	TREEVIEW_ITEM *oldItems = infoPtr->items;
	INT *oldfreeList = infoPtr->freeList;

	infoPtr->uNumPtrsAlloced*=2;
    infoPtr->items = COMCTL32_Alloc (infoPtr->uNumPtrsAlloced*sizeof (TREEVIEW_ITEM));
    infoPtr->freeList= COMCTL32_Alloc ((1+(infoPtr->uNumPtrsAlloced>>5))*sizeof (INT));

    memcpy (&infoPtr->items[0], &oldItems[0],
                    infoPtr->uNumPtrsAlloced/2 * sizeof(TREEVIEW_ITEM));
    memcpy (&infoPtr->freeList[0], &oldfreeList[0],
                    (infoPtr->uNumPtrsAlloced>>6) * sizeof(INT));

    COMCTL32_Free (oldItems);  
    COMCTL32_Free (oldfreeList);  
   }

  /* 
   * Reset infoPtr structure with new stat according to current TV picture
   */
  iItem=0;
  infoPtr->uNumItems++;
  if ((INT)infoPtr->uMaxHandle==(infoPtr->uNumItems-1))  { 
  	iItem=infoPtr->uNumItems;
  	infoPtr->uMaxHandle = (HTREEITEM)((INT)infoPtr->uMaxHandle + 1);
  } else {					 /* check freelist */
  	for (i=0; i<infoPtr->uNumPtrsAlloced>>5; i++) {
  		if (infoPtr->freeList[i]) {
  			iItem=ffs (infoPtr->freeList[i])-1;
  			tv_clear_bit(iItem,&infoPtr->freeList[i]);
   			iItem+=i<<5;
  			break;
  		}
    } 
  }

  if (TRACE_ON(treeview)) { 
    for (i=0; i<infoPtr->uNumPtrsAlloced>>5; i++) 
	    TRACE("%8x\n",infoPtr->freeList[i]);
  }

  if (!iItem) ERR("Argh -- can't find free item.\n");

  /* 
   * Find the parent item of the new item 
   */  
  tvItem= & ptdi->DUMMYUNIONNAME.itemex;
  wineItem=& infoPtr->items[iItem];

  if ((ptdi->hParent==TVI_ROOT) || (ptdi->hParent==0)) {
    parentItem       = NULL;
    wineItem->parent = 0; 
    sibItem          = &infoPtr->items [(INT)infoPtr->TopRootItem];
    listItems        = infoPtr->uNumItems;
  }
  else  {
  	parentItem = &infoPtr->items[(INT)ptdi->hParent];
  
    /* Do the insertion here it if it's the only item of this parent */
  	if (!parentItem->firstChild) 
  		parentItem->firstChild=(HTREEITEM)iItem;
  
  	wineItem->parent = ptdi->hParent;
  	sibItem          = &infoPtr->items [(INT)parentItem->firstChild];
  	parentItem->cChildren++;
  	listItems        = parentItem->cChildren;
  }

  
  /* NOTE: I am moving some setup of the wineItem object that was initialy 
   *       done at the end of the function since some of the values are 
   *       required by the Callback sorting 
   */

  if (tvItem->mask & TVIF_TEXT) 
  {
    /*
     * Setup the item text stuff here since it's required by the Sort method
     * when the insertion are ordered
     */
    if (tvItem->pszText!=LPSTR_TEXTCALLBACKA) 
    {
      TRACE("(%p,%s)\n", &tvItem->pszText, tvItem->pszText); 
      len = lstrlenA (tvItem->pszText)+1;
      wineItem->pszText= COMCTL32_Alloc (len+1);
      lstrcpyA (wineItem->pszText, tvItem->pszText);
      wineItem->cchTextMax=len;
    }
    else 
    {
      TRACE("LPSTR_TEXTCALLBACK\n");
      wineItem->pszText = LPSTR_TEXTCALLBACKA;
      wineItem->cchTextMax = 0;
    }
  }

  if (tvItem->mask & TVIF_PARAM) 
    wineItem->lParam=tvItem->lParam;


  wineItem->upsibling=0;  /* needed in case we're the first item in a list */ 
  wineItem->sibling=0;     
  wineItem->firstChild=0;
  wineItem->hItem=(HTREEITEM)iItem;

  if (listItems>1) {
     prevsib=NULL;

     switch ((DWORD) ptdi->hInsertAfter) {
		case (DWORD) TVI_FIRST: 
			if (wineItem->parent) {
				wineItem->sibling=parentItem->firstChild;
				parentItem->firstChild=(HTREEITEM)iItem;
			} else {
				wineItem->sibling=infoPtr->TopRootItem;
				infoPtr->TopRootItem=(HTREEITEM)iItem;
			}
			sibItem->upsibling=(HTREEITEM)iItem;
			break;

		case (DWORD) TVI_SORT:  
  	  if (sibItem==wineItem) 
        /* 
         * This item is the first child of the level and it 
         * has already been inserted 
         */                
        break; 
      else
      {
        TREEVIEW_ITEM *aChild        = 
          &infoPtr->items[(INT)parentItem->firstChild];
  
        TREEVIEW_ITEM *previousChild = NULL;
        BOOL bItemInserted           = FALSE;
  
        /* Iterate the parent children to see where we fit in */
        while ( aChild != NULL )
        {
          INT comp = strcmp(wineItem->pszText, aChild->pszText);
          if ( comp < 0 )  /* we are smaller than the current one */
          {
            TREEVIEW_InsertBefore(infoPtr, wineItem, aChild, parentItem);
            bItemInserted = TRUE;
            break;
          }
          else if ( comp > 0 )  /* we are bigger than the current one */
          {
            previousChild = aChild;
            aChild = (aChild->sibling == 0)  /* This will help us to exit   */
                        ? NULL               /* if there is no more sibling */
                        : &infoPtr->items[(INT)aChild->sibling];
  
            /* Look at the next item */
            continue;
          }
          else if ( comp == 0 )
          {
            /* 
             * An item with this name is already existing, therefore,  
             * we add after the one we found 
             */
            TREEVIEW_InsertAfter(infoPtr, wineItem, aChild, parentItem);
            bItemInserted = TRUE;
            break;
          }
        }
      
        /* 
         * we reach the end of the child list and the item as not
         * yet been inserted, therefore, insert it after the last child.
         */
        if ( (! bItemInserted ) && (aChild == NULL) )
          TREEVIEW_InsertAfter(infoPtr, wineItem, previousChild, parentItem);
  
        break;
      }


		case (DWORD) TVI_LAST:  
			if (sibItem==wineItem) break;
			while (sibItem->sibling) {
				prevsib=sibItem;
				sibItem=&infoPtr->items [(INT)sibItem->sibling];
			}
			sibItem->sibling=(HTREEITEM)iItem;
			wineItem->upsibling=sibItem->hItem;
			break;
		default:
			while ((sibItem->sibling) && (sibItem->hItem!=ptdi->hInsertAfter))
				{
				prevsib=sibItem;
                sibItem=&infoPtr->items [(INT)sibItem->sibling];
              }
			if (sibItem->hItem!=ptdi->hInsertAfter) {
			 ERR("tried to insert item after nonexisting handle.\n");
			 break;
			}
			prevsib=sibItem;
			if (sibItem->sibling) {
            	sibItem=&infoPtr->items [(INT)sibItem->sibling];
				sibItem->upsibling=(HTREEITEM)iItem;
				wineItem->sibling=sibItem->hItem;
			}
			prevsib->sibling=(HTREEITEM)iItem;
			wineItem->upsibling=prevsib->hItem;
			break;
   	}
   }	


/* Fill in info structure */

   TRACE("new item %d; parent %d, mask %x\n", iItem, 
			(INT)wineItem->parent,tvItem->mask);

   wineItem->mask=tvItem->mask;
   wineItem->iIntegral=1; 

   if (tvItem->mask & TVIF_CHILDREN) {
	 wineItem->cChildren=tvItem->cChildren;
	 if (tvItem->cChildren==I_CHILDRENCALLBACK) 
			FIXME(" I_CHILDRENCALLBACK not supported\n");
	}

  wineItem->expandBox.left   = 0; /* Initialize the expandBox */
  wineItem->expandBox.top    = 0;
  wineItem->expandBox.right  = 0;
  wineItem->expandBox.bottom = 0;

   if (tvItem->mask & TVIF_IMAGE) 
	wineItem->iImage=tvItem->iImage;

		/* If the application sets TVIF_INTEGRAL without
			supplying a TVITEMEX structure, it's toast */

   if (tvItem->mask & TVIF_INTEGRAL) 
   		wineItem->iIntegral=tvItem->iIntegral;   

   if (tvItem->mask & TVIF_SELECTEDIMAGE) 
	wineItem->iSelectedImage=tvItem->iSelectedImage;

   if (tvItem->mask & TVIF_STATE) {
     TRACE("Changing item state from %d to %d\n", 
       wineItem->state, 
       tvItem->state);
	wineItem->state=tvItem->state;
	wineItem->stateMask=tvItem->stateMask;
   }


   TREEVIEW_QueueRefresh (hwnd);

   return (LRESULT) iItem;
}


static LRESULT
TREEVIEW_DeleteItem (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  INT iItem;
  TREEVIEW_ITEM *wineItem;

  TRACE("\n");
  if (!infoPtr) return FALSE;

  if (lParam == (INT)TVI_ROOT) {
	TREEVIEW_RemoveTree (hwnd);
  } else {
  	iItem= (INT) lParam;
  	wineItem = TREEVIEW_ValidItem (infoPtr, (HTREEITEM)iItem);
  	if (!wineItem) return FALSE;
    TRACE("%s\n",wineItem->pszText);
	TREEVIEW_RemoveItem (hwnd, wineItem);
  }

  TREEVIEW_QueueRefresh (hwnd);

  return TRUE;
}


static LRESULT
TREEVIEW_GetIndent (HWND hwnd)
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

 TRACE("\n");
 return infoPtr->uIndent;
}

static LRESULT
TREEVIEW_SetIndent (HWND hwnd, WPARAM wParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  INT newIndent;
   
  TRACE("\n");
  newIndent=(INT) wParam;
  if (newIndent < MINIMUM_INDENT) newIndent=MINIMUM_INDENT;
  infoPtr->uIndent=newIndent;
  
  return 0;
}

static LRESULT
TREEVIEW_GetToolTips (HWND hwnd)

{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

 TRACE("\n");
 return infoPtr->hwndToolTip;
}


static LRESULT
TREEVIEW_SetToolTips (HWND hwnd, WPARAM wParam)

{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
 HWND prevToolTip;

 TRACE("\n");
 prevToolTip=infoPtr->hwndToolTip;
 infoPtr->hwndToolTip= (HWND) wParam;

 return prevToolTip;
}


LRESULT CALLBACK
TREEVIEW_GetEditControl (HWND hwnd)

{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

 return infoPtr->hwndEdit;
}

LRESULT CALLBACK
TREEVIEW_Edit_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, 
							LPARAM lParam)
{
  switch (uMsg) 
  {
    case WM_ERASEBKGND: 
    {
      RECT rc;
      HDC  hdc = (HDC) wParam;
      GetClientRect (hwnd, &rc);
      Rectangle (hdc, rc.left, rc.top, rc.right, rc.bottom);
      return -1;
    }

    case WM_GETDLGCODE:
    {
      return DLGC_WANTARROWS | DLGC_WANTALLKEYS;
    }

    default:
    {
      TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(GetParent(hwnd));
      return CallWindowProcA( infoPtr->wpEditOrig, hwnd, uMsg, wParam, lParam);
    }
  }

  return 0;
}


/* should handle edit control messages here */

static LRESULT
TREEVIEW_Command (HWND hwnd, WPARAM wParam, LPARAM lParam)

{
  TRACE("%x %ld\n",wParam, lParam);
 
  switch (HIWORD(wParam)) 
  {
		case EN_UPDATE:
    {
      /* 
       * Adjust the edit window size 
       */
      TREEVIEW_INFO *infoPtr  = TREEVIEW_GetInfoPtr(hwnd);
      TREEVIEW_ITEM *editItem = TREEVIEW_ValidItem(infoPtr, infoPtr->editItem);
      INT           iLength   = GetWindowTextLengthA(infoPtr->hwndEdit);
      HDC           hdc       = GetDC(infoPtr->hwndEdit);
      TEXTMETRICA   tm;

      if ( GetTextMetricsA(hdc, &tm) )
      {
        LONG newWidth = (iLength * tm.tmAveCharWidth) + 15;
            
    		SetWindowPos ( 
          infoPtr->hwndEdit,
          HWND_TOP, 
          editItem->text.left - 2, 
          editItem->text.top  - 1,
          newWidth,
          editItem->text.bottom - editItem->text.top  + 3,
          SWP_DRAWFRAME );
      }
      ReleaseDC(hwnd, hdc);

      break;
    }

    case EN_KILLFOCUS:
/*      TREEVIEW_EndEditLabelNow(hwnd, (WPARAM)FALSE, 0); 
*/
      break;

    default:
      return SendMessageA (GetParent (hwnd), WM_COMMAND, wParam, lParam);
  }

  return 0;
}

static LRESULT
TREEVIEW_Size (HWND hwnd, WPARAM wParam, LPARAM lParam)

{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

  if (infoPtr->bAutoSize) 
  {
    infoPtr->bAutoSize = FALSE;
    return 0;
  }
  infoPtr->bAutoSize = TRUE;

  if (wParam == SIZE_RESTORED)  
  {
    infoPtr->uTotalWidth  = LOWORD (lParam);
  	infoPtr->uTotalHeight = HIWORD (lParam);
  } else {
  	FIXME("WM_SIZE flag %x %lx not handled\n", wParam, lParam);
  }

  TREEVIEW_QueueRefresh (hwnd);
  return 0;
}


static LRESULT
TREEVIEW_StyleChanged (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  LPSTYLESTRUCT lpss=(LPSTYLESTRUCT) lParam;

  TRACE("(%x %lx)\n",wParam,lParam);
  
  if (wParam & (GWL_STYLE)) 
	 SetWindowLongA( hwnd, GWL_STYLE, lpss->styleNew);
  if (wParam & (GWL_EXSTYLE)) 
	 SetWindowLongA( hwnd, GWL_STYLE, lpss->styleNew);

  return 0;
}

static LRESULT
TREEVIEW_Create (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TREEVIEW_INFO *infoPtr;
 	LOGFONTA logFont;
    TEXTMETRICA tm;
	HDC hdc;
  
    TRACE("wnd %x\n",hwnd);
      /* allocate memory for info structure */
      infoPtr = (TREEVIEW_INFO *) COMCTL32_Alloc (sizeof(TREEVIEW_INFO));

     SetWindowLongA( hwnd, 0, (DWORD)infoPtr);

    if (infoPtr == NULL) {
		ERR("could not allocate info memory!\n");
		return 0;
    }

    if ((TREEVIEW_INFO*) GetWindowLongA( hwnd, 0) != infoPtr) {
		ERR("pointer assignment error!\n");
		return 0;
    }

	hdc=GetDC (hwnd);

    /* set default settings */
    infoPtr->uInternalStatus=0;
    infoPtr->uNumItems=0;
    infoPtr->clrBk = GetSysColor (COLOR_WINDOW);
    infoPtr->clrText = GetSysColor (COLOR_BTNTEXT);
    infoPtr->cy = 0;
    infoPtr->cx = 0;
    infoPtr->uIndent = 15;
    infoPtr->himlNormal = NULL;
    infoPtr->himlState = NULL;
	infoPtr->uItemHeight = -1;
    GetTextMetricsA (hdc, &tm);
    infoPtr->hFont = GetStockObject (DEFAULT_GUI_FONT);
	GetObjectA (infoPtr->hFont, sizeof (LOGFONTA), &logFont);
	logFont.lfWeight=FW_BOLD;
    infoPtr->hBoldFont = CreateFontIndirectA (&logFont);
    
    infoPtr->items = NULL;
    infoPtr->selectedItem=0;
    infoPtr->clrText=-1;	/* use system color */
    infoPtr->dropItem=0;
    infoPtr->pCallBackSort=NULL;

/*
    infoPtr->hwndNotify = GetParent32 (hwnd);
    infoPtr->bTransparent = ( GetWindowLongA( hwnd, GWL_STYLE) & TBSTYLE_FLAT);
*/

	infoPtr->hwndToolTip=0;
    if (!( GetWindowLongA( hwnd, GWL_STYLE) & TVS_NOTOOLTIPS)) {   /* Create tooltip control */
		TTTOOLINFOA ti;

		infoPtr->hwndToolTip =  
			CreateWindowExA (0, TOOLTIPS_CLASSA, NULL, 0,
                   CW_USEDEFAULT, CW_USEDEFAULT,
                   CW_USEDEFAULT, CW_USEDEFAULT,
                   hwnd, 0, 0, 0);

        /* Send NM_TOOLTIPSCREATED notification */
        if (infoPtr->hwndToolTip) {
            NMTOOLTIPSCREATED nmttc;

            nmttc.hdr.hwndFrom = hwnd;
            nmttc.hdr.idFrom =  GetWindowLongA( hwnd, GWL_ID);
            nmttc.hdr.code = NM_TOOLTIPSCREATED;
            nmttc.hwndToolTips = infoPtr->hwndToolTip;

            SendMessageA (GetParent (hwnd), WM_NOTIFY,
                (WPARAM) GetWindowLongA( hwnd, GWL_ID), (LPARAM)&nmttc);
        }

		ZeroMemory (&ti, sizeof(TTTOOLINFOA));
        ti.cbSize   = sizeof(TTTOOLINFOA);
        ti.uFlags   = TTF_IDISHWND | TTF_TRACK | TTF_TRANSPARENT ;
        ti.hwnd     = hwnd;
        ti.uId      = 0;
        ti.lpszText = "Test"; /* LPSTR_TEXTCALLBACK; */
        SetRectEmpty (&ti.rect);

        SendMessageA (infoPtr->hwndToolTip, TTM_ADDTOOLA, 0, (LPARAM)&ti);
    }

 	infoPtr->hwndEdit = CreateWindowExA ( 
                          WS_EX_LEFT, 
                          "EDIT",
                          0,
                          WS_CHILD | WS_BORDER | ES_AUTOHSCROLL | 
                          ES_WANTRETURN | ES_LEFT,
                          0, 0, 0, 0,
                          hwnd, 
                          0,0,0); /* FIXME: (HMENU)IDTVEDIT,pcs->hInstance,0);*/

  SendMessageA ( infoPtr->hwndEdit, WM_SETFONT, infoPtr->hFont, FALSE);
	infoPtr->wpEditOrig = (WNDPROC)SetWindowLongA (
                                    infoPtr->hwndEdit,
                                    GWL_WNDPROC, 
                           					(LONG) TREEVIEW_Edit_SubclassProc);

  ReleaseDC (hwnd, hdc);
  return 0;
}


static LRESULT 
TREEVIEW_Destroy (HWND hwnd) 
{
   TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
     
   TRACE("\n");
   TREEVIEW_RemoveTree (hwnd);
   if (infoPtr->Timer & TV_REFRESH_TIMER_SET) 
        KillTimer (hwnd, TV_REFRESH_TIMER);
   if (infoPtr->hwndToolTip) 
		DestroyWindow (infoPtr->hwndToolTip);

   COMCTL32_Free (infoPtr);
   return 0;
}


static LRESULT
TREEVIEW_Paint (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    PAINTSTRUCT ps;

    TRACE("\n");
    hdc = wParam==0 ? BeginPaint (hwnd, &ps) : (HDC)wParam;
    TREEVIEW_Refresh (hwnd);
    if(!wParam)
        EndPaint (hwnd, &ps);
    TRACE("done\n");
      
    return DefWindowProcA (hwnd, WM_PAINT, wParam, lParam);
}

static LRESULT
TREEVIEW_SetFocus (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
   TREEVIEW_SendSimpleNotify (hwnd, NM_SETFOCUS);
   InvalidateRect(hwnd, NULL, FALSE);
   return 0;
}

static LRESULT
TREEVIEW_KillFocus (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
   TREEVIEW_SendSimpleNotify (hwnd, NM_KILLFOCUS);
   InvalidateRect(hwnd, NULL, FALSE);
   return 0;
}

static LRESULT
TREEVIEW_EraseBackground (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
    HBRUSH hBrush = CreateSolidBrush (infoPtr->clrBk);
    RECT rect;

    TRACE("\n");
    GetClientRect (hwnd, &rect);
    FillRect ((HDC)wParam, &rect, hBrush);
    DeleteObject (hBrush);
    return TRUE;
}


/* Notifications */

  
static BOOL
TREEVIEW_SendSimpleNotify (HWND hwnd, UINT code)
{
    NMHDR nmhdr;

    TRACE("%x\n",code);
    nmhdr.hwndFrom = hwnd;
    nmhdr.idFrom   =  GetWindowLongA( hwnd, GWL_ID);
    nmhdr.code     = code;

    return (BOOL) SendMessageA (GetParent (hwnd), WM_NOTIFY,
                                   (WPARAM)nmhdr.idFrom, (LPARAM)&nmhdr);
}


static BOOL
TREEVIEW_SendTreeviewNotify (HWND hwnd, UINT code, UINT action, 
			HTREEITEM oldItem, HTREEITEM newItem)

{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  NMTREEVIEWA nmhdr;
  TREEVIEW_ITEM  *wineItem;

  TRACE("code:%x action:%x olditem:%x newitem:%x\n",
		  code,action,(INT)oldItem,(INT)newItem);
  nmhdr.hdr.hwndFrom = hwnd;
  nmhdr.hdr.idFrom =  GetWindowLongA( hwnd, GWL_ID);
  nmhdr.hdr.code = code;
  nmhdr.action = action;
  if (oldItem) {
  	wineItem=& infoPtr->items[(INT)oldItem];
  	nmhdr.itemOld.mask 		= wineItem->mask;
  	nmhdr.itemOld.hItem		= wineItem->hItem;
  	nmhdr.itemOld.state		= wineItem->state;
  	nmhdr.itemOld.stateMask	= wineItem->stateMask;
  	nmhdr.itemOld.iImage 	= wineItem->iImage;
  	nmhdr.itemOld.pszText 	= wineItem->pszText;
  	nmhdr.itemOld.cchTextMax= wineItem->cchTextMax;
  	nmhdr.itemOld.iImage 	= wineItem->iImage;
  	nmhdr.itemOld.iSelectedImage 	= wineItem->iSelectedImage;
  	nmhdr.itemOld.cChildren = wineItem->cChildren;
  	nmhdr.itemOld.lParam	= wineItem->lParam;
  }

  if (newItem) {
  	wineItem=& infoPtr->items[(INT)newItem];
  	nmhdr.itemNew.mask 		= wineItem->mask;
  	nmhdr.itemNew.hItem		= wineItem->hItem;
  	nmhdr.itemNew.state		= wineItem->state;
  	nmhdr.itemNew.stateMask	= wineItem->stateMask;
  	nmhdr.itemNew.iImage 	= wineItem->iImage;
  	nmhdr.itemNew.pszText 	= wineItem->pszText;
  	nmhdr.itemNew.cchTextMax= wineItem->cchTextMax;
  	nmhdr.itemNew.iImage 	= wineItem->iImage;
  	nmhdr.itemNew.iSelectedImage 	= wineItem->iSelectedImage;
  	nmhdr.itemNew.cChildren = wineItem->cChildren;
  	nmhdr.itemNew.lParam	= wineItem->lParam;
  }

  nmhdr.ptDrag.x = 0;
  nmhdr.ptDrag.y = 0;

  return (BOOL)SendMessageA (GetParent (hwnd), WM_NOTIFY,
                                   (WPARAM) GetWindowLongA( hwnd, GWL_ID), (LPARAM)&nmhdr);

}

static BOOL
TREEVIEW_SendTreeviewDnDNotify (HWND hwnd, UINT code, HTREEITEM dragItem, 
								POINT pt)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  NMTREEVIEWA nmhdr;
  TREEVIEW_ITEM  *wineItem;

  TRACE("code:%x dragitem:%x\n", code,(INT)dragItem);

  nmhdr.hdr.hwndFrom = hwnd;
  nmhdr.hdr.idFrom =  GetWindowLongA( hwnd, GWL_ID);
  nmhdr.hdr.code = code;
  nmhdr.action = 0;
  wineItem=& infoPtr->items[(INT)dragItem];
  nmhdr.itemNew.mask 	= wineItem->mask;
  nmhdr.itemNew.hItem	= wineItem->hItem;
  nmhdr.itemNew.state	= wineItem->state;
  nmhdr.itemNew.lParam	= wineItem->lParam;

  nmhdr.ptDrag.x = pt.x;
  nmhdr.ptDrag.y = pt.y;

  return (BOOL)SendMessageA (GetParent (hwnd), WM_NOTIFY,
                                   (WPARAM) GetWindowLongA( hwnd, GWL_ID), (LPARAM)&nmhdr);

}


static BOOL
TREEVIEW_SendDispInfoNotify (HWND hwnd, TREEVIEW_ITEM *wineItem, 
								UINT code, UINT what)
{
  NMTVDISPINFOA tvdi;
  BOOL retval;
  char *buf;

  TRACE("item %d, action %x, state %d\n",
    (INT)wineItem->hItem,
    what,
    (INT)wineItem->state);

  tvdi.hdr.hwndFrom	= hwnd;
  tvdi.hdr.idFrom	=  GetWindowLongA( hwnd, GWL_ID);
  tvdi.hdr.code		= code;
  tvdi.item.mask	= what;
  tvdi.item.hItem	= wineItem->hItem;
  tvdi.item.state	= wineItem->state;
  tvdi.item.lParam	= wineItem->lParam;
  tvdi.item.pszText = COMCTL32_Alloc (128*sizeof(char));
  buf = tvdi.item.pszText;

  retval=(BOOL)SendMessageA (
                  GetParent(hwnd), 
                  WM_NOTIFY,
                  (WPARAM)tvdi.hdr.idFrom, 
                  (LPARAM)&tvdi);

  if (what & TVIF_TEXT) {
		wineItem->pszText        = tvdi.item.pszText;
		if (buf==tvdi.item.pszText) {
			wineItem->cchTextMax = 128;
		} else { 
			TRACE("user-supplied buffer\n");
			COMCTL32_Free (buf);
			wineItem->cchTextMax = 0;
		}
	}
  if (what & TVIF_SELECTEDIMAGE) 
		wineItem->iSelectedImage = tvdi.item.iSelectedImage;
  if (what & TVIF_IMAGE) 
		wineItem->iImage         = tvdi.item.iImage;
  if (what & TVIF_CHILDREN) 
		wineItem->cChildren      = tvdi.item.cChildren;

 return retval;
}


static BOOL
TREEVIEW_SendCustomDrawNotify (HWND hwnd, DWORD dwDrawStage, HDC hdc,
			RECT rc)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  NMTVCUSTOMDRAW nmcdhdr;
  LPNMCUSTOMDRAW nmcd;

  TRACE("drawstage:%lx hdc:%x\n", dwDrawStage, hdc);

  nmcd= & nmcdhdr.nmcd;
  nmcd->hdr.hwndFrom = hwnd;
  nmcd->hdr.idFrom =  GetWindowLongA( hwnd, GWL_ID);
  nmcd->hdr.code   = NM_CUSTOMDRAW;
  nmcd->dwDrawStage= dwDrawStage;
  nmcd->hdc		   = hdc;
  nmcd->rc.left    = rc.left;
  nmcd->rc.right   = rc.right;
  nmcd->rc.bottom  = rc.bottom;
  nmcd->rc.top     = rc.top;
  nmcd->dwItemSpec = 0;
  nmcd->uItemState = 0;
  nmcd->lItemlParam= 0;
  nmcdhdr.clrText  = infoPtr->clrText;
  nmcdhdr.clrTextBk= infoPtr->clrBk;
  nmcdhdr.iLevel   = 0;

  return (BOOL)SendMessageA (GetParent (hwnd), WM_NOTIFY,
                               (WPARAM) GetWindowLongA( hwnd, GWL_ID), (LPARAM)&nmcdhdr);

}


/* FIXME: need to find out when the flags in uItemState need to be set */

static BOOL
TREEVIEW_SendCustomDrawItemNotify (HWND hwnd, HDC hdc,
  			TREEVIEW_ITEM *wineItem, UINT uItemDrawState)
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
 NMTVCUSTOMDRAW nmcdhdr;
 LPNMCUSTOMDRAW nmcd;
 DWORD dwDrawStage,dwItemSpec;
 UINT uItemState;
 
 dwDrawStage=CDDS_ITEM | uItemDrawState;
 dwItemSpec=(DWORD)wineItem->hItem;
 uItemState=0;
 if (wineItem->hItem==infoPtr->selectedItem) uItemState|=CDIS_SELECTED;
 if (wineItem->hItem==infoPtr->focusItem)	 uItemState|=CDIS_FOCUS;
 if (wineItem->hItem==infoPtr->hotItem)      uItemState|=CDIS_HOT;

 nmcd= & nmcdhdr.nmcd;
 nmcd->hdr.hwndFrom = hwnd;
 nmcd->hdr.idFrom =  GetWindowLongA( hwnd, GWL_ID);
 nmcd->hdr.code   = NM_CUSTOMDRAW;
 nmcd->dwDrawStage= dwDrawStage;
 nmcd->hdc		  = hdc;
 nmcd->rc.left    = wineItem->rect.left;
 nmcd->rc.right   = wineItem->rect.right;
 nmcd->rc.bottom  = wineItem->rect.bottom;
 nmcd->rc.top     = wineItem->rect.top;
 nmcd->dwItemSpec = dwItemSpec;
 nmcd->uItemState = uItemState;
 nmcd->lItemlParam= wineItem->lParam;

 nmcdhdr.clrText  = infoPtr->clrText;
 nmcdhdr.clrTextBk= infoPtr->clrBk;
 nmcdhdr.iLevel   = wineItem->iLevel;

 TRACE("drawstage:%lx hdc:%x item:%lx, itemstate:%x\n",
		  dwDrawStage, hdc, dwItemSpec, uItemState);

 return (BOOL)SendMessageA (GetParent (hwnd), WM_NOTIFY,
                               (WPARAM) GetWindowLongA( hwnd, GWL_ID), (LPARAM)&nmcdhdr);
}


/* Note:If the specified item is the child of a collapsed parent item,
   the parent's list of child items is (recursively) expanded to reveal the 
   specified item. This is mentioned for TREEVIEW_SelectItem; don't 
   know if it also applies here.
*/

static LRESULT
TREEVIEW_Expand (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  TREEVIEW_ITEM *wineItem;
  UINT flag;
  INT expand;
  
  flag = (UINT) wParam;
  expand = (INT) lParam;

  wineItem = TREEVIEW_ValidItem (infoPtr, (HTREEITEM)expand);

  if (!wineItem) 
    return 0;
  if (!wineItem->cChildren) 
    return 0;

  TRACE("For (%s) flags:%x item:%d state:%d\n", 
    wineItem->pszText,
    flag, 
    expand,
    wineItem->state);

  if (wineItem->cChildren==I_CHILDRENCALLBACK) {
    FIXME("we don't handle I_CHILDRENCALLBACK yet\n");
    return 0;
  }

  if (flag == TVE_TOGGLE) {    /* FIXME: check exact behaviour here */
   flag &= ~TVE_TOGGLE;    /* ie: bitwise ops or 'case' ops */
   if (wineItem->state & TVIS_EXPANDED) 
     flag |= TVE_COLLAPSE;
   else
     flag |= TVE_EXPAND;
  }

  switch (flag) 
  {
    case TVE_COLLAPSERESET: 
      TRACE("  case TVE_COLLAPSERESET\n");
      if (!wineItem->state & TVIS_EXPANDED) 
        return 0;

       wineItem->state &= ~(TVIS_EXPANDEDONCE | TVIS_EXPANDED);
       TREEVIEW_RemoveAllChildren (hwnd, wineItem);
       break;

    case TVE_COLLAPSE: 
      TRACE("  case TVE_COLLAPSE\n");
      if (!wineItem->state & TVIS_EXPANDED) 
        return 0;

      wineItem->state &= ~TVIS_EXPANDED;
      break;

    case TVE_EXPAND: 
      TRACE("  case TVE_EXPAND\n");
      if (wineItem->state & TVIS_EXPANDED) 
        return 0;

      TRACE("  is not expanded...\n");
     
      if (!(wineItem->state & TVIS_EXPANDEDONCE))  
      { 
        TRACE("  and has never been expanded...\n");
        wineItem->state |= TVIS_EXPANDED;

        /* this item has never been expanded */
        if (TREEVIEW_SendTreeviewNotify (
              hwnd, 
              TVN_ITEMEXPANDING, 
              TVE_EXPAND, 
              0, 
              (HTREEITEM)expand))
        {
          TRACE("  TVN_ITEMEXPANDING returned TRUE, exiting...\n");
          return FALSE;   
        }

        /* FIXME
         * Since the TVN_ITEMEXPANDING message may has caused the parent to
         * insert new items which in turn may have cause items placeholder 
         * reallocation, I reassign the current item pointer so we have 
         * something valid to work with... 
         * However, this should not be necessary, 
         * investigation required in TREEVIEW_InsertItemA
         */
        wineItem = TREEVIEW_ValidItem (infoPtr, (HTREEITEM)expand);
        if (! wineItem) 
        { 
          ERR(
            "Catastropic situation, cannot retreive item #%d\n",
            expand);
          return FALSE;
        }

        wineItem->state |= TVIS_EXPANDEDONCE;
        TRACE("  TVN_ITEMEXPANDING sent...\n");

        TREEVIEW_SendTreeviewNotify (
          hwnd, 
          TVN_ITEMEXPANDED, 
          TVE_EXPAND, 
          0, 
          (HTREEITEM)expand);

        TRACE("  TVN_ITEMEXPANDED sent...\n");

      }
      else
      {
        /* this item has already been expanded */
        wineItem->state |= TVIS_EXPANDED;
      }
      break;

    case TVE_EXPANDPARTIAL:
      TRACE("  case TVE_EXPANDPARTIAL\n");
      FIXME("TVE_EXPANDPARTIAL not implemented\n");
      wineItem->state ^=TVIS_EXPANDED;
      wineItem->state |=TVIS_EXPANDEDONCE;
      break;
  }

  TRACE("Exiting, Item %d state is now %d...\n", 
    expand, 
    wineItem->state);
  
  TREEVIEW_QueueRefresh (hwnd);
  return TRUE;
}


static TREEVIEW_ITEM *
TREEVIEW_HitTestPoint (HWND hwnd, POINT pt)
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
 TREEVIEW_ITEM *wineItem;
 RECT rect;

 GetClientRect (hwnd, &rect);

 if (!infoPtr->firstVisible) return NULL;

 wineItem=&infoPtr->items [(INT)infoPtr->firstVisible];

 while ((wineItem!=NULL) && (pt.y > wineItem->rect.bottom))
       wineItem=TREEVIEW_GetNextListItem (infoPtr,wineItem);
	
 if (!wineItem) 
	return NULL;

 return wineItem;
}


static LRESULT
TREEVIEW_HitTest (HWND hwnd, LPARAM lParam)
{
  LPTVHITTESTINFO lpht=(LPTVHITTESTINFO) lParam;
  TREEVIEW_ITEM *wineItem;
  RECT rect;
  UINT status,x,y;

  GetClientRect (hwnd, &rect);
  status=0;
  x=lpht->pt.x;
  y=lpht->pt.y;
  if (x < rect.left)  status|=TVHT_TOLEFT;
  if (x > rect.right) status|=TVHT_TORIGHT;
  if (y < rect.top )  status|=TVHT_ABOVE;
  if (y > rect.bottom) status|=TVHT_BELOW;

  if (status) {
    lpht->flags=status;
    return 0;
  }

  wineItem=TREEVIEW_HitTestPoint (hwnd, lpht->pt);
  if (!wineItem) {  
    lpht->flags=TVHT_NOWHERE;
    return 0;
  }

  /* FIXME: implement other flags
   * Assign the appropriate flags depending on the click location 
   * Intitialize flags before to "|=" it... 
   */
  lpht->flags=0;

  if (x < wineItem->expandBox.left) 
  {
    lpht->flags |= TVHT_ONITEMINDENT;
  } 
  else if ( ( x >= wineItem->expandBox.left) && 
            ( x <= wineItem->expandBox.right))
  {
    lpht->flags |= TVHT_ONITEMBUTTON;
  }
  else if (x < wineItem->rect.right) 
  {
    lpht->flags |= TVHT_ONITEMLABEL;    
  } 
  else
  {
    lpht->flags|=TVHT_ONITEMRIGHT;
  }
 
  lpht->hItem=wineItem->hItem;

  return (LRESULT) wineItem->hItem;
}

LRESULT WINAPI
TREEVIEW_EndEditLabelNow (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr    = TREEVIEW_GetInfoPtr(hwnd);
  TREEVIEW_ITEM *editedItem = TREEVIEW_ValidItem (infoPtr, infoPtr->editItem);
  BOOL          bRevert     = (BOOL)wParam;
  BOOL          bReturn     = ! bRevert;

  if ( ! (BOOL)wParam ) /* wParam is set to true to cancel the edition */
  {
		if ( TREEVIEW_SendDispInfoNotify(  /* return true to cancel edition */
           hwnd, 
           editedItem,
           TVN_ENDLABELEDIT, 
           0))
    {
      bRevert = TRUE;
      bReturn = FALSE; 
    }
  }

  if (bRevert == FALSE) /* Apply the changes */
  {
    char tmpText[1024];
    int  iLength = GetWindowTextA(infoPtr->hwndEdit, tmpText, 1023);
    bReturn      = FALSE;

    if (iLength == 0) 
    {
      ERR("Problem retreiving new item label.");
    }
    else if (iLength >= 1023)
    {
      ERR(
        "Insuficient space to retrieve new item label, new label ignored.");
    }
    else
    {
      if (strcmp( tmpText, editedItem->pszText ) == 0)
        /* Do nothing if the label has not changed */
        bReturn = TRUE;
      else
      {
        LPSTR tmpLabel = COMCTL32_Alloc( iLength+1 );
  
        if ( tmpLabel == NULL )
          ERR(
            "OutOfMemory, cannot allocate space for label");
        else
        {
          COMCTL32_Free(editedItem->pszText);
          editedItem->pszText = tmpLabel;
          lstrcpyA( editedItem->pszText, tmpText);
          bReturn = TRUE;
        }
      }
    }

		ShowWindow(infoPtr->hwndEdit, SW_HIDE);
		EnableWindow(infoPtr->hwndEdit, FALSE);
    infoPtr->editItem = 0;
  }

  return bReturn;
}


LRESULT
TREEVIEW_LButtonDoubleClick (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_ITEM *wineItem;
  POINT pt;

  TRACE("\n");
  pt.x = (INT)LOWORD(lParam);
  pt.y = (INT)HIWORD(lParam);
  SetFocus (hwnd);

  wineItem=TREEVIEW_HitTestPoint (hwnd, pt);
  if (!wineItem) return 0;
  TRACE("item %d \n",(INT)wineItem->hItem);
 
  if (TREEVIEW_SendSimpleNotify (hwnd, NM_DBLCLK)!=TRUE) {     /* FIXME!*/
  	TREEVIEW_Expand (hwnd, (WPARAM) TVE_TOGGLE, (LPARAM) wineItem->hItem);
 }
 return TRUE;
}


static LRESULT
TREEVIEW_LButtonDown (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  INT iItem;
  TVHITTESTINFO ht;

  ht.pt.x = (INT)LOWORD(lParam);
  ht.pt.y = (INT)HIWORD(lParam);

  SetFocus (hwnd);
  iItem=TREEVIEW_HitTest (hwnd, (LPARAM) &ht);
  TRACE("item %d \n",iItem);

  if (ht.flags & TVHT_ONITEMBUTTON) {
    TREEVIEW_Expand (hwnd, (WPARAM) TVE_TOGGLE, (LPARAM) iItem);
  }
  else
  {
    infoPtr->uInternalStatus|=TV_LDRAG;
  }
  
  return 0;
}

static LRESULT
TREEVIEW_LButtonUp (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  INT           iItem;
  TREEVIEW_ITEM *editItem;
  TVHITTESTINFO ht;
 
  ht.pt.x = (INT)LOWORD(lParam);
  ht.pt.y = (INT)HIWORD(lParam);
 
  TRACE("\n");

  /* Return true to cancel default behaviour */
  if ( TREEVIEW_SendSimpleNotify (hwnd, NM_CLICK) )
    return 0;

  /* Get the item */
  iItem = TREEVIEW_HitTest (hwnd, (LPARAM) &ht);
  if (!iItem) 
    return 0;

  editItem = TREEVIEW_ValidItem(infoPtr, (HTREEITEM)iItem);
 
  infoPtr->uInternalStatus &= ~(TV_LDRAG | TV_LDRAGGING);

  /* 
   * If the style allow editing and the node is already selected 
   * and the click occured on the item label...
   */
  if ( ( GetWindowLongA( hwnd, GWL_STYLE) & TVS_EDITLABELS ) && 
       ( editItem->state & TVIS_SELECTED ) &&
       ( ht.flags & TVHT_ONITEMLABEL ))
  {
    if ( infoPtr->editItem == 0 ) /* If we are not curently editing */
    {
  		if ( TREEVIEW_SendDispInfoNotify(  /* Return true to cancel edition */
              hwnd, 
              editItem, 
              TVN_BEGINLABELEDIT, 
              0))
      {
        return 0; 
      }
  
  		TRACE("Edit started for %s.\n", editItem->pszText);
  		infoPtr->editItem = editItem->hItem;
  
  		SetWindowPos ( 
        infoPtr->hwndEdit, 
        HWND_TOP, 
        editItem->text.left - 2, 
        editItem->text.top  - 1,
        editItem->text.right  - editItem->text.left + 20 ,
        editItem->text.bottom - editItem->text.top  + 3,
        SWP_DRAWFRAME );
  
  		SetWindowTextA( infoPtr->hwndEdit, editItem->pszText );
      SendMessageA  ( infoPtr->hwndEdit, EM_SETSEL, 0, -1 );
  		SetFocus      ( infoPtr->hwndEdit); 
      ShowWindow    ( infoPtr->hwndEdit, SW_SHOW); 
    }
  }
  else if ( infoPtr->editItem != 0 ) /* If we are curently editing */
  {
    TREEVIEW_EndEditLabelNow(hwnd, (WPARAM)FALSE, 0);
  }
  else if ( ht.flags & (TVHT_ONITEMLABEL | TVHT_ONITEMICON))
  {
    TREEVIEW_DoSelectItem (
      hwnd, 
      TVGN_CARET, 
      (HTREEITEM)iItem, 
      TVC_BYMOUSE);
  }

  return 0;
}


static LRESULT
TREEVIEW_RButtonDown (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

 TRACE("\n");
 infoPtr->uInternalStatus|=TV_RDRAG;
 return 0;
}

static LRESULT
TREEVIEW_RButtonUp (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

 TRACE("\n");
 if (TREEVIEW_SendSimpleNotify (hwnd, NM_RCLICK)) return 0;
 infoPtr->uInternalStatus&= ~(TV_RDRAG | TV_RDRAGGING);
 return 0;
}


static LRESULT
TREEVIEW_MouseMove (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
 TREEVIEW_ITEM *hotItem;
 POINT pt;

 pt.x=(INT) LOWORD (lParam);
 pt.y=(INT) HIWORD (lParam);
 hotItem=TREEVIEW_HitTestPoint (hwnd, pt);
 if (!hotItem) return 0;
 infoPtr->focusItem=hotItem->hItem;

 if ( GetWindowLongA( hwnd, GWL_STYLE) & TVS_DISABLEDRAGDROP) return 0;

 if (infoPtr->uInternalStatus & TV_LDRAG) {
	TREEVIEW_SendTreeviewDnDNotify (hwnd, TVN_BEGINDRAG, hotItem->hItem, pt);
	infoPtr->uInternalStatus &= ~TV_LDRAG;
	infoPtr->uInternalStatus |= TV_LDRAGGING;
	infoPtr->dropItem=hotItem->hItem;
	return 0;
 }

 if (infoPtr->uInternalStatus & TV_RDRAG) {
	TREEVIEW_SendTreeviewDnDNotify (hwnd, TVN_BEGINRDRAG, hotItem->hItem, pt);
	infoPtr->uInternalStatus &= ~TV_RDRAG;
	infoPtr->uInternalStatus |= TV_RDRAGGING;
	infoPtr->dropItem=hotItem->hItem;
	return 0;
 }
 
 return 0;
}


static LRESULT
TREEVIEW_CreateDragImage (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
 TREEVIEW_ITEM *dragItem;
 INT cx,cy;
 HDC    hdc,htopdc;
 HWND hwtop;
 HBITMAP hbmp,hOldbmp;
 SIZE  size;
 RECT  rc;
 HFONT hOldFont;
 char    *itemtxt;
 
 TRACE("\n");
 if (!(infoPtr->himlNormal))  return 0;
 dragItem=TREEVIEW_ValidItem (infoPtr, (HTREEITEM) lParam);
 
 if (!dragItem) return 0;
 itemtxt=dragItem->pszText;

 hwtop=GetDesktopWindow ();
 htopdc= GetDC (hwtop);
 hdc=CreateCompatibleDC (htopdc); 
 
 hOldFont=SelectObject (hdc, infoPtr->hFont);
 GetTextExtentPoint32A (hdc, itemtxt, lstrlenA (itemtxt), &size);
 TRACE("%d %d %s %d\n",size.cx,size.cy,itemtxt,lstrlenA(itemtxt));
 hbmp=CreateCompatibleBitmap (htopdc, size.cx, size.cy);
 hOldbmp=SelectObject (hdc, hbmp);

 ImageList_GetIconSize (infoPtr->himlNormal, &cx, &cy);
 size.cx+=cx;
 if (cy>size.cy) size.cy=cy;

 infoPtr->dragList=ImageList_Create (size.cx, size.cy, ILC_COLOR, 10, 10);
 ImageList_Draw (infoPtr->himlNormal, dragItem->iImage, hdc, 0, 0, ILD_NORMAL);

/*
 ImageList_GetImageInfo (infoPtr->himlNormal, dragItem->hItem, &iminfo);
 ImageList_AddMasked (infoPtr->dragList, iminfo.hbmImage, CLR_DEFAULT);
*/

/* draw item text */

 SetRect (&rc, cx, 0, size.cx,size.cy);
 DrawTextA (hdc, itemtxt, lstrlenA (itemtxt), &rc, DT_LEFT);
 SelectObject (hdc, hOldFont);
 SelectObject (hdc, hOldbmp);

 ImageList_Add (infoPtr->dragList, hbmp, 0);

 DeleteDC (hdc);
 DeleteObject (hbmp);
 ReleaseDC (hwtop, htopdc);

 return (LRESULT)infoPtr->dragList;
}


static LRESULT
TREEVIEW_DoSelectItem (HWND hwnd, INT action, HTREEITEM newSelect, INT cause)

{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  TREEVIEW_ITEM *prevItem,*wineItem;
  INT prevSelect;

  wineItem = TREEVIEW_ValidItem (infoPtr, (HTREEITEM)newSelect);

  TRACE("Entering item %d, flag %x, cause %x, state %d\n", 
    (INT)newSelect, 
    action, 
    cause,
    wineItem->state);

  if ( (wineItem) && (wineItem->parent))
  {
    /* 
     * If the item has a collapse parent expand the parent so he 
     * can expose the item 
     */
    TREEVIEW_ITEM *parentItem = TREEVIEW_ValidItem (infoPtr, wineItem->parent);
    if ( !(parentItem->state & TVIS_EXPANDED)) 
      TREEVIEW_Expand (hwnd, TVE_EXPAND, (LPARAM) wineItem->parent);
  }

  switch (action) 
  {
    case TVGN_CARET: 
      prevSelect=(INT)infoPtr->selectedItem;

      if ((HTREEITEM)prevSelect==newSelect) 
        return FALSE;

      prevItem= TREEVIEW_ValidItem (infoPtr, (HTREEITEM)prevSelect);

      if (newSelect) 
        if (TREEVIEW_SendTreeviewNotify(
              hwnd, 
              TVN_SELCHANGING, 
              cause, 
              (HTREEITEM)prevSelect, 
              (HTREEITEM)newSelect)) 
          return FALSE;       /* FIXME: OK? */
    
      if (prevItem) 
        prevItem->state &= ~TVIS_SELECTED;
      if (wineItem) 
        wineItem->state |=  TVIS_SELECTED;

      infoPtr->selectedItem=(HTREEITEM)newSelect;

      TREEVIEW_SendTreeviewNotify(
        hwnd, 
        TVN_SELCHANGED, 
        cause,
        (HTREEITEM)prevSelect,
        (HTREEITEM)newSelect);

      break;

    case TVGN_DROPHILITE: 
      prevItem= TREEVIEW_ValidItem (infoPtr, infoPtr->dropItem);

      if (prevItem) 
        prevItem->state &= ~TVIS_DROPHILITED;

      infoPtr->dropItem=(HTREEITEM)newSelect;

      if (wineItem) 
        wineItem->state |=TVIS_DROPHILITED;

      break;

    case TVGN_FIRSTVISIBLE:
      FIXME("FIRSTVISIBLE not implemented\n");
      break;
 }
 
 TREEVIEW_QueueRefresh (hwnd);

  TRACE("Leaving state %d\n", wineItem->state);
 return TRUE;
}

/* FIXME: handle NM_KILLFocus enzo */
static LRESULT
TREEVIEW_SelectItem (HWND hwnd, WPARAM wParam, LPARAM lParam)

{
 return TREEVIEW_DoSelectItem (hwnd, wParam, (HTREEITEM) lParam, TVC_UNKNOWN);
}


static LRESULT
TREEVIEW_GetFont (HWND hwnd, WPARAM wParam, LPARAM lParam)

{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);

 TRACE("%x\n",infoPtr->hFont);
 return infoPtr->hFont;
}

static LRESULT
TREEVIEW_SetFont (HWND hwnd, WPARAM wParam, LPARAM lParam)

{
 TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
 TEXTMETRICA tm;
 LOGFONTA logFont;
 HFONT hFont, hOldFont;
 INT height;
 HDC hdc;

 TRACE("%x %lx\n",wParam, lParam);
 
 infoPtr->hFont = (HFONT)wParam;

 hFont = infoPtr->hFont ? infoPtr->hFont : GetStockObject (SYSTEM_FONT);

 GetObjectA (infoPtr->hFont, sizeof (LOGFONTA), &logFont);
 logFont.lfWeight=FW_BOLD;
 infoPtr->hBoldFont = CreateFontIndirectA (&logFont);

 hdc = GetDC (0);
 hOldFont = SelectObject (hdc, hFont);
 GetTextMetricsA (hdc, &tm);
 height= tm.tmHeight + tm.tmExternalLeading;
 if (height>infoPtr->uRealItemHeight) 
 	infoPtr->uRealItemHeight=height;
 SelectObject (hdc, hOldFont);
 ReleaseDC (0, hdc);

 if (lParam) 	
 	TREEVIEW_QueueRefresh (hwnd);
 
 return 0;
}


static LRESULT
TREEVIEW_VScroll (HWND hwnd, WPARAM wParam, LPARAM lParam)

{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  int maxHeight;

  TRACE("wp %x, lp %lx\n", wParam, lParam);
  if (!infoPtr->uInternalStatus & TV_VSCROLL) return FALSE;

  switch (LOWORD (wParam)) {
	case SB_LINEUP: 
			if (!infoPtr->cy) return FALSE;
			infoPtr->cy -= infoPtr->uRealItemHeight;
			if (infoPtr->cy < 0) infoPtr->cy=0;
			break;
	case SB_LINEDOWN: 
			maxHeight=infoPtr->uTotalHeight-infoPtr->uVisibleHeight;
			if (infoPtr->cy == maxHeight) return FALSE;
			infoPtr->cy += infoPtr->uRealItemHeight;
			if (infoPtr->cy > maxHeight) 
				infoPtr->cy = maxHeight;
			break;
	case SB_PAGEUP:	
			if (!infoPtr->cy) return FALSE;
			infoPtr->cy -= infoPtr->uVisibleHeight;
			if (infoPtr->cy < 0) infoPtr->cy=0;
			break;
	case SB_PAGEDOWN:
			maxHeight=infoPtr->uTotalHeight-infoPtr->uVisibleHeight;
			if (infoPtr->cy == maxHeight) return FALSE;
			infoPtr->cy += infoPtr->uVisibleHeight;
            if (infoPtr->cy > maxHeight)
                infoPtr->cy = maxHeight;
			break;
	case SB_THUMBTRACK: 
			infoPtr->cy = HIWORD (wParam);
			break;
			
  }
  
  TREEVIEW_QueueRefresh (hwnd);
  return TRUE;
}

static LRESULT
TREEVIEW_HScroll (HWND hwnd, WPARAM wParam, LPARAM lParam) 
{
  TREEVIEW_INFO *infoPtr = TREEVIEW_GetInfoPtr(hwnd);
  int maxWidth;

  TRACE("wp %lx, lp %x\n", lParam, wParam);
	
  if (!infoPtr->uInternalStatus & TV_HSCROLL) return FALSE;

  switch (LOWORD (wParam)) {
	case SB_LINEUP: 
			if (!infoPtr->cx) return FALSE;
			infoPtr->cx -= infoPtr->uRealItemHeight;
			if (infoPtr->cx < 0) infoPtr->cx=0;
			break;
	case SB_LINEDOWN: 
			maxWidth=infoPtr->uTotalWidth-infoPtr->uVisibleWidth;
			if (infoPtr->cx == maxWidth) return FALSE;
			infoPtr->cx += infoPtr->uRealItemHeight; /*FIXME */
			if (infoPtr->cx > maxWidth) 
				infoPtr->cx = maxWidth;
			break;
	case SB_PAGEUP:	
			if (!infoPtr->cx) return FALSE;
			infoPtr->cx -= infoPtr->uVisibleWidth;
			if (infoPtr->cx < 0) infoPtr->cx=0;
			break;
	case SB_PAGEDOWN:
			maxWidth=infoPtr->uTotalWidth-infoPtr->uVisibleWidth;
			if (infoPtr->cx == maxWidth) return FALSE;
			infoPtr->cx += infoPtr->uVisibleWidth;
            if (infoPtr->cx > maxWidth)
                infoPtr->cx = maxWidth;
			break;
	case SB_THUMBTRACK: 
			infoPtr->cx = HIWORD (wParam);
			break;
			
  }
  
  TREEVIEW_QueueRefresh (hwnd);
  return TRUE;
}


static LRESULT
TREEVIEW_KeyDown (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
 TREEVIEW_INFO *infoPtr        = TREEVIEW_GetInfoPtr(hwnd);
 HTREEITEM     hNewSelection   = 0;
 INT           scrollNeeds     = -1;
 INT           cyChangeNeeds   = -1;
 INT           prevSelect      = (INT)infoPtr->selectedItem;

 TREEVIEW_ITEM *prevItem       = 
    (prevSelect != 0 ) ? 
      TREEVIEW_ValidItem (infoPtr, (HTREEITEM)prevSelect) :
      NULL;

 TREEVIEW_ITEM *newItem        = NULL;

 TRACE("%x %lx\n",wParam, lParam);

 if (prevSelect == 0) 
   return FALSE;

 switch (wParam) {
	case VK_UP: 
		newItem=TREEVIEW_GetPrevListItem (infoPtr, prevItem);

		if (!newItem) 
			newItem=& infoPtr->items[(INT)infoPtr->TopRootItem];

    hNewSelection = newItem->hItem;

    if (! newItem->visible)
      scrollNeeds = SB_LINEUP;

		break;

	case VK_DOWN: 
		newItem=TREEVIEW_GetNextListItem (infoPtr, prevItem);

		if (!newItem) 
      newItem=prevItem;

    hNewSelection = newItem->hItem;

    if (! newItem->visible)
      scrollNeeds = SB_LINEDOWN;

		break;

	case VK_HOME:
		newItem       = &infoPtr->items[(INT)infoPtr->TopRootItem];
    hNewSelection = newItem->hItem;
    cyChangeNeeds = 0;
		break;

	case VK_END:
		newItem       = &infoPtr->items[(INT)infoPtr->TopRootItem];
		newItem       = TREEVIEW_GetLastListItem (infoPtr, newItem);
    hNewSelection = newItem->hItem;

    if (! newItem->visible)
      cyChangeNeeds = infoPtr->uTotalHeight-infoPtr->uVisibleHeight;

		break;

	case VK_LEFT:
    if ( (prevItem->cChildren > 0) && (prevItem->state & TVIS_EXPANDED) )
    {
      TREEVIEW_Expand(hwnd, TVE_COLLAPSE, prevSelect );
    }
    else if ((INT)prevItem->parent) 
    {
      newItem = (& infoPtr->items[(INT)prevItem->parent]);
      if (! newItem->visible) 
        /* FIXME find a way to make this item the first visible... */
        newItem = NULL; 

      hNewSelection = newItem->hItem;
    }

    break;

	case VK_RIGHT:
    if ( ( prevItem->cChildren > 0)  || 
         ( prevItem->cChildren == I_CHILDRENCALLBACK))
    {
      if (! (prevItem->state & TVIS_EXPANDED))
        TREEVIEW_Expand(hwnd, TVE_EXPAND, prevSelect );
      else
      {
        newItem = (& infoPtr->items[(INT)prevItem->firstChild]);
        hNewSelection = newItem->hItem;
      }
    }

    break;

  case VK_ADD:
    if (! (prevItem->state & TVIS_EXPANDED))
      TREEVIEW_Expand(hwnd, TVE_EXPAND, prevSelect );
    break;

  case VK_SUBTRACT:
    if (prevItem->state & TVIS_EXPANDED)
      TREEVIEW_Expand(hwnd, TVE_COLLAPSE, prevSelect );
    break;

  case VK_PRIOR:
    
		newItem=TREEVIEW_GetListItem(
              infoPtr, 
              prevItem,
              -1*(TREEVIEW_GetVisibleCount(hwnd,0,0)-3));
		if (!newItem) 
      newItem=prevItem;
  
    hNewSelection = newItem->hItem;

    if (! newItem->visible)
      scrollNeeds = SB_PAGEUP;

		break;

  case VK_NEXT:
		newItem=TREEVIEW_GetListItem(
              infoPtr, 
              prevItem,
              TREEVIEW_GetVisibleCount(hwnd,0,0)-3);

		if (!newItem) 
      newItem=prevItem;

    hNewSelection = newItem->hItem;

    if (! newItem->visible)
      scrollNeeds = SB_PAGEDOWN;

		break;

	case VK_BACK:

	case VK_RETURN:

  default:
		FIXME("%x not implemented\n", wParam);
		break;
 }

  if (hNewSelection) 
  {
/* 
    This works but does not send notification...

    prevItem->state      &= ~TVIS_SELECTED;
    newItem->state       |=  TVIS_SELECTED;
    infoPtr->selectedItem = hNewSelection;
    TREEVIEW_QueueRefresh (hwnd);
*/

    if ( TREEVIEW_DoSelectItem( 
           hwnd, 
           TVGN_CARET, 
           (HTREEITEM)hNewSelection, 
           TVC_BYKEYBOARD))
    {
      /* If selection change is allowed for the new item, perform scrolling */
      if (scrollNeeds != -1)
        TREEVIEW_VScroll(hwnd, scrollNeeds, 0);
  
      if (cyChangeNeeds != -1)
        infoPtr->cy = cyChangeNeeds;

      /* FIXME: Something happen in the load the in the two weeks before 
         april 1st 1999 which makes this SetFocus mandatory otherwise, the focus 
         is lost... However the SetFocus should not be required...*/
               
      SetFocus(hwnd);
    }
  }

  return FALSE;
}


LRESULT WINAPI
TREEVIEW_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg) {
    	case TVM_INSERTITEMA:
          return TREEVIEW_InsertItemA (hwnd, wParam, lParam);

    	case TVM_INSERTITEMW:
      		FIXME("Unimplemented msg TVM_INSERTITEM32W\n");
      		return 0;

    	case TVM_DELETEITEM:
      		return TREEVIEW_DeleteItem (hwnd, wParam, lParam);

    	case TVM_EXPAND:
      		return TREEVIEW_Expand (hwnd, wParam, lParam);

    	case TVM_GETITEMRECT:
      		return TREEVIEW_GetItemRect (hwnd, wParam, lParam);

    	case TVM_GETCOUNT:
      		return TREEVIEW_GetCount (hwnd, wParam, lParam);

    	case TVM_GETINDENT:
      		return TREEVIEW_GetIndent (hwnd);

    	case TVM_SETINDENT:
      		return TREEVIEW_SetIndent (hwnd, wParam);

    	case TVM_GETIMAGELIST:
      		return TREEVIEW_GetImageList (hwnd, wParam, lParam);

		case TVM_SETIMAGELIST:
	    	return TREEVIEW_SetImageList (hwnd, wParam, lParam);

    	case TVM_GETNEXTITEM:
      		return TREEVIEW_GetNextItem (hwnd, wParam, lParam);

    	case TVM_SELECTITEM:
      		return TREEVIEW_SelectItem (hwnd, wParam, lParam);

    	case TVM_GETITEMA:
      		return TREEVIEW_GetItemA (hwnd, wParam, lParam);

    	case TVM_GETITEMW:
      		FIXME("Unimplemented msg TVM_GETITEM32W\n");
      		return 0;

    	case TVM_SETITEMA:
      		return TREEVIEW_SetItemA (hwnd, wParam, lParam);

    	case TVM_SETITEMW:
      		FIXME("Unimplemented msg TVM_SETITEMW\n");
      		return 0;

    	case TVM_EDITLABELA:
      		FIXME("Unimplemented msg TVM_EDITLABEL32A \n");
      		return 0;

    	case TVM_EDITLABELW:
      		FIXME("Unimplemented msg TVM_EDITLABEL32W \n");
      		return 0;

    	case TVM_GETEDITCONTROL:
      		return TREEVIEW_GetEditControl (hwnd);

    	case TVM_GETVISIBLECOUNT:
      		return TREEVIEW_GetVisibleCount (hwnd, wParam, lParam);

    	case TVM_HITTEST:
      		return TREEVIEW_HitTest (hwnd, lParam);

    	case TVM_CREATEDRAGIMAGE:
      		return TREEVIEW_CreateDragImage (hwnd, wParam, lParam);
  
    	case TVM_SORTCHILDREN:
      		FIXME("Unimplemented msg TVM_SORTCHILDREN\n");
      		return 0;
  
    	case TVM_ENSUREVISIBLE:
      		FIXME("Unimplemented msg TVM_ENSUREVISIBLE\n");
      		return 0;
  
    	case TVM_SORTCHILDRENCB:
      		return TREEVIEW_SortChildrenCB(hwnd, wParam, lParam);
  
    	case TVM_ENDEDITLABELNOW:
      		return TREEVIEW_EndEditLabelNow (hwnd, wParam, lParam);
  
    	case TVM_GETISEARCHSTRINGA:
      		FIXME("Unimplemented msg TVM_GETISEARCHSTRING32A\n");
      		return 0;
  
    	case TVM_GETISEARCHSTRINGW:
      		FIXME("Unimplemented msg TVM_GETISEARCHSTRING32W\n");
      		return 0;
  
    	case TVM_GETTOOLTIPS:
      		return TREEVIEW_GetToolTips (hwnd);

    	case TVM_SETTOOLTIPS:
      		return TREEVIEW_SetToolTips (hwnd, wParam);
  
    	case TVM_SETINSERTMARK:
      		FIXME("Unimplemented msg TVM_SETINSERTMARK\n");
      		return 0;
  
    	case TVM_SETITEMHEIGHT:
      		return TREEVIEW_SetItemHeight (hwnd, wParam);
  
    	case TVM_GETITEMHEIGHT:
      		return TREEVIEW_GetItemHeight (hwnd);
  
    	case TVM_SETBKCOLOR:
      		return TREEVIEW_SetBkColor (hwnd, wParam, lParam);
	
    	case TVM_SETTEXTCOLOR:
      		return TREEVIEW_SetTextColor (hwnd, wParam, lParam);
  
    	case TVM_GETBKCOLOR:
      		return TREEVIEW_GetBkColor (hwnd);
  
    	case TVM_GETTEXTCOLOR:
      		return TREEVIEW_GetTextColor (hwnd);
  
    	case TVM_SETSCROLLTIME:
      		FIXME("Unimplemented msg TVM_SETSCROLLTIME\n");
      		return 0;
  
    	case TVM_GETSCROLLTIME:
      		FIXME("Unimplemented msg TVM_GETSCROLLTIME\n");
      		return 0;
  
    	case TVM_SETINSERTMARKCOLOR:
      		FIXME("Unimplemented msg TVM_SETINSERTMARKCOLOR\n");
      		return 0;
  
    	case TVM_SETUNICODEFORMAT:
      		FIXME("Unimplemented msg TVM_SETUNICODEFORMAT\n");
      		return 0;
  
    	case TVM_GETUNICODEFORMAT:
      		FIXME("Unimplemented msg TVM_GETUNICODEFORMAT\n");
      		return 0;
  
		case WM_COMMAND: 
			 return TREEVIEW_Command (hwnd, wParam, lParam);
  
		case WM_CREATE:
			return TREEVIEW_Create (hwnd, wParam, lParam);
  
		case WM_DESTROY:
			return TREEVIEW_Destroy (hwnd);
  
/*		case WM_ENABLE: */
  
		case WM_ERASEBKGND:
			return TREEVIEW_EraseBackground (hwnd, wParam, lParam);
  
		case WM_GETDLGCODE:
	    	return DLGC_WANTARROWS | DLGC_WANTCHARS;
  
		case WM_PAINT:
	    	return TREEVIEW_Paint (hwnd, wParam, lParam);
  
		case WM_GETFONT:
	    	return TREEVIEW_GetFont (hwnd, wParam, lParam);

		case WM_SETFONT:
	    	return TREEVIEW_SetFont (hwnd, wParam, lParam);
  
		case WM_KEYDOWN:
			return TREEVIEW_KeyDown (hwnd, wParam, lParam);
  
  
		case WM_SETFOCUS: 
			return TREEVIEW_SetFocus (hwnd, wParam, lParam);

		case WM_KILLFOCUS: 
			return TREEVIEW_KillFocus (hwnd, wParam, lParam);
  
  
		case WM_LBUTTONDOWN:
			return TREEVIEW_LButtonDown (hwnd, wParam, lParam);

		case WM_LBUTTONUP:
			return TREEVIEW_LButtonUp (hwnd, wParam, lParam);
  
		case WM_LBUTTONDBLCLK:
			return TREEVIEW_LButtonDoubleClick (hwnd, wParam, lParam);
  
		case WM_RBUTTONDOWN:
			return TREEVIEW_RButtonDown (hwnd, wParam, lParam);

		case WM_RBUTTONUP:
			return TREEVIEW_RButtonUp (hwnd, wParam, lParam);

		case WM_MOUSEMOVE:
			return TREEVIEW_MouseMove (hwnd, wParam, lParam);
  
  
/*		case WM_SYSCOLORCHANGE: */
		case WM_STYLECHANGED: 
			return TREEVIEW_StyleChanged (hwnd, wParam, lParam);

/*		case WM_SETREDRAW: */
  
		case WM_TIMER:
			return TREEVIEW_HandleTimer (hwnd, wParam, lParam);
 
		case WM_SIZE: 
			return TREEVIEW_Size (hwnd, wParam,lParam);

		case WM_HSCROLL: 
			return TREEVIEW_HScroll (hwnd, wParam, lParam);
		case WM_VSCROLL: 
			return TREEVIEW_VScroll (hwnd, wParam, lParam);
  
		case WM_DRAWITEM:
			printf ("drawItem\n");
			return DefWindowProcA (hwnd, uMsg, wParam, lParam);
  
		default:
	    	if (uMsg >= WM_USER)
		FIXME("Unknown msg %04x wp=%08x lp=%08lx\n",
  		     uMsg, wParam, lParam);
  	    return DefWindowProcA (hwnd, uMsg, wParam, lParam);
      }
    return 0;
}


VOID
TREEVIEW_Register (void)
{
    WNDCLASSA wndClass;

    TRACE("\n");

    if (GlobalFindAtomA (WC_TREEVIEWA)) return;

    ZeroMemory (&wndClass, sizeof(WNDCLASSA));
    wndClass.style         = CS_GLOBALCLASS | CS_DBLCLKS;
    wndClass.lpfnWndProc   = (WNDPROC)TREEVIEW_WindowProc;
    wndClass.cbClsExtra    = 0;
    wndClass.cbWndExtra    = sizeof(TREEVIEW_INFO *);
    wndClass.hCursor       = LoadCursorA (0, IDC_ARROWA);
    wndClass.hbrBackground = 0;
    wndClass.lpszClassName = WC_TREEVIEWA;
 
    RegisterClassA (&wndClass);
}


VOID
TREEVIEW_Unregister (void)
{
    if (GlobalFindAtomA (WC_TREEVIEWA))
	UnregisterClassA (WC_TREEVIEWA, (HINSTANCE)NULL);
}