/*
 * Listbox controls
 * 
 * Copyright  Martin Ayotte, 1993
 * Copyright  Constantine Sapuntzakis, 1995
 * 
 */

 /*
  * TODO: 
  * - check if multi-column listboxes work
  * - implement more messages and styles
  */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "windows.h"
#include "user.h"
#include "win.h"
#include "msdos.h"
#include "listbox.h"
#include "dos_fs.h"
#include "stddebug.h"
#include "debug.h"
#include "xmalloc.h"

#if 0
#define LIST_HEAP_ALLOC(lphl,f,size) ((int)HEAP_Alloc(&lphl->Heap,f,size) & 0xffff)
#define LIST_HEAP_FREE(lphl,handle) (HEAP_Free(&lphl->Heap,LIST_HEAP_ADDR(lphl,handle)))
#define LIST_HEAP_ADDR(lphl,handle) \
    ((void *)((handle) ? ((handle) | ((int)lphl->Heap & 0xffff0000)) : 0))
#else
/* FIXME: shouldn't each listbox have its own heap? */
#define LIST_HEAP_ALLOC(lphl,f,size) USER_HEAP_ALLOC(size)
#define LIST_HEAP_FREE(lphl,handle)  USER_HEAP_FREE(handle)
#define LIST_HEAP_ADDR(lphl,handle)  USER_HEAP_LIN_ADDR(handle)
#define LIST_HEAP_SEG_ADDR(lphl,handle) USER_HEAP_SEG_ADDR(handle)
#endif

#define LIST_HEAP_SIZE 0x10000

static void ListBoxInitialize(LPHEADLIST lphl)
{
  lphl->lpFirst        = NULL;
  lphl->ItemsCount     = 0;
  lphl->ItemsVisible   = 0;
  lphl->FirstVisible   = 0;
  lphl->ColumnsVisible = 1;
  lphl->ItemsPerColumn = 0;
  lphl->ItemFocused    = -1;
  lphl->PrevFocused    = -1;
}

void CreateListBoxStruct(HWND hwnd, WORD CtlType, LONG styles, HWND parent)
{
  LPHEADLIST lphl;

  lphl = (LPHEADLIST)xmalloc(sizeof(HEADLIST));
  SetWindowLong(hwnd, 0, (LONG)lphl);
  ListBoxInitialize(lphl);
  lphl->DrawCtlType    = CtlType;
  lphl->CtlID          = GetWindowWord(hwnd,GWW_ID);
  lphl->bRedrawFlag    = TRUE;
  lphl->iNumStops      = 0;
  lphl->TabStops       = NULL;
  lphl->hFont          = GetStockObject(SYSTEM_FONT);
  lphl->hParent        = parent;
  lphl->StdItemHeight  = 15; /* FIXME: should get the font height */
  lphl->dwStyle        = styles;
  lphl->OwnerDrawn     = styles & (LBS_OWNERDRAWFIXED | LBS_OWNERDRAWVARIABLE);
  lphl->HasStrings     = (styles & LBS_HASSTRINGS) || !lphl->OwnerDrawn;

  if (lphl->OwnerDrawn) {
    LISTSTRUCT dummyls;
    
    lphl->hDrawItemStruct = USER_HEAP_ALLOC(sizeof(DRAWITEMSTRUCT));
    lphl->needMeasure = TRUE;
    dummyls.mis.CtlType    = lphl->DrawCtlType;
    dummyls.mis.CtlID      = lphl->CtlID;
    dummyls.mis.itemID     = -1;
    dummyls.mis.itemWidth  = 0; /* ignored */
    dummyls.mis.itemData   = 0;

    ListBoxAskMeasure(lphl,&dummyls);
  } else {
    lphl->hDrawItemStruct = 0;
  }

#if 0
  HeapHandle = GlobalAlloc(GMEM_FIXED, LIST_HEAP_SIZE);
  HeapBase = GlobalLock(HeapHandle);
  HEAP_Init(&lphl->Heap, HeapBase, LIST_HEAP_SIZE);
#endif
}

void DestroyListBoxStruct(LPHEADLIST lphl)
{
  if (lphl->hDrawItemStruct)
    USER_HEAP_FREE(lphl->hDrawItemStruct);

  /* XXX need to free lphl->Heap */
  free(lphl);
}

static LPHEADLIST ListBoxGetStorageHeader(HWND hwnd)
{
    return (LPHEADLIST)GetWindowLong(hwnd,0);
}

/* Send notification "code" as part of a WM_COMMAND-message if hwnd
   has the LBS_NOTIFY style */
void ListBoxSendNotification(LPHEADLIST lphl, HWND hwnd, WORD code)
{
  if (lphl->dwStyle & LBS_NOTIFY)
#ifdef WINELIB32
    SendMessage(lphl->hParent, WM_COMMAND,
		MAKEWPARAM(lphl->CtlID,code), (LPARAM)hwnd);
#else
    SendMessage(lphl->hParent, WM_COMMAND,
		lphl->CtlID, MAKELONG(hwnd, code));
#endif
}


/* get the maximum value of lphl->FirstVisible */
int ListMaxFirstVisible(LPHEADLIST lphl)
{
    int m = lphl->ItemsCount-lphl->ItemsVisible;
    return (m < 0) ? 0 : m;
}


void ListBoxUpdateWindow(HWND hwnd, LPHEADLIST lphl, BOOL repaint)
{
  SetScrollRange(hwnd, SB_VERT, 0, ListMaxFirstVisible(lphl), TRUE);
  if (lphl->ItemsPerColumn != 0) {
    SetScrollRange(hwnd, SB_HORZ, 1, lphl->ItemsVisible /
		   lphl->ItemsPerColumn + 1, TRUE);
  }
  if (repaint && lphl->bRedrawFlag) {
    InvalidateRect(hwnd, NULL, TRUE);
  }
}

/* Returns: 0 if nothing needs to be changed */
/*          1 if FirstVisible changed */

int ListBoxScrollToFocus(LPHEADLIST lphl)
{
  short       end;

  if (lphl->ItemsCount == 0) return 0;
  if (lphl->ItemFocused == -1) return 0;

  end = lphl->FirstVisible + lphl->ItemsVisible - 1;

  if (lphl->ItemFocused < lphl->FirstVisible ) {
    lphl->FirstVisible = lphl->ItemFocused;
    return 1;
  } else {
    if (lphl->ItemFocused > end) {
      WORD maxFirstVisible = ListMaxFirstVisible(lphl);

      lphl->FirstVisible = lphl->ItemFocused;
      
      if (lphl->FirstVisible > maxFirstVisible) {
	lphl->FirstVisible = maxFirstVisible;
      }
      return 1;
    }
  } 
  return 0;
}


LPLISTSTRUCT ListBoxGetItem(LPHEADLIST lphl, UINT uIndex)
{
  LPLISTSTRUCT lpls;
  UINT         Count = 0;

  if (uIndex >= lphl->ItemsCount) return NULL;

  lpls = lphl->lpFirst;
  while (Count++ < uIndex) lpls = lpls->lpNext;
  return lpls;
}


void ListBoxDrawItem (HWND hwnd, LPHEADLIST lphl, HDC hdc, LPLISTSTRUCT lpls, 
		      RECT *rect, WORD itemAction, WORD itemState)
{
  if (lphl->OwnerDrawn) {
    DRAWITEMSTRUCT   *dis = USER_HEAP_LIN_ADDR(lphl->hDrawItemStruct);

    dis->CtlID    = lpls->mis.CtlID;
    dis->CtlType  = lpls->mis.CtlType;
    dis->itemID   = lpls->mis.itemID;
    dis->hDC      = hdc;
    dis->hwndItem = hwnd;
    dis->itemData = lpls->mis.itemData;
    dis->itemAction = itemAction;
    dis->itemState  = itemState;
    dis->rcItem     = *rect;
    SendMessage(lphl->hParent, WM_DRAWITEM,
		0, (LPARAM)USER_HEAP_SEG_ADDR(lphl->hDrawItemStruct));
  } else {
    if (itemAction == ODA_DRAWENTIRE || itemAction == ODA_SELECT) {
      int 	OldBkMode;
      DWORD 	dwOldTextColor = 0;

      OldBkMode = SetBkMode(hdc, TRANSPARENT);

      if (itemState != 0) {
	dwOldTextColor = SetTextColor(hdc, 0x00FFFFFFL);
	FillRect(hdc, rect, GetStockObject(BLACK_BRUSH));
      }

      if (lphl->dwStyle & LBS_USETABSTOPS) {
	TabbedTextOut(hdc, rect->left + 5, rect->top + 2, 
		      (char *)lpls->itemText, strlen((char *)lpls->itemText), 
		      lphl->iNumStops, lphl->TabStops, 0);
      } else {
	TextOut(hdc, rect->left + 5, rect->top + 2,
		(char *)lpls->itemText, strlen((char *)lpls->itemText));
      }

      if (itemState != 0) {
	SetTextColor(hdc, dwOldTextColor);
      }
      
      SetBkMode(hdc, OldBkMode);
    } else DrawFocusRect(hdc, rect);
  }

  return;
}


int ListBoxFindMouse(LPHEADLIST lphl, int X, int Y)
{
  LPLISTSTRUCT lpls = lphl->lpFirst;
  int          i, j;
  POINT        point;
  
  point.x = X; point.y = Y;
  if (lphl->ItemsCount == 0) return LB_ERR;

  for(i = 0; i < lphl->FirstVisible; i++) {
    if (lpls == NULL) return LB_ERR;
    lpls = lpls->lpNext;
  }
  for(j = 0; j < lphl->ItemsVisible; i++, j++) {
    if (lpls == NULL) return LB_ERR;
    if (PtInRect(&lpls->itemRect,point)) {
      return i;
    }
    lpls = lpls->lpNext;
  }
  dprintf_listbox(stddeb,"ListBoxFindMouse: not found\n");
  return LB_ERR;
}


void ListBoxAskMeasure(LPHEADLIST lphl, LPLISTSTRUCT lpls)  
{
  HANDLE hTemp = USER_HEAP_ALLOC( sizeof(MEASUREITEMSTRUCT) );
  MEASUREITEMSTRUCT *lpmeasure = (MEASUREITEMSTRUCT *) USER_HEAP_LIN_ADDR(hTemp);

  if (lpmeasure == NULL) {
    fprintf(stderr,"ListBoxAskMeasure() out of memory !\n");
    return;
  }
 
  *lpmeasure = lpls->mis;
  lpmeasure->itemHeight = lphl->StdItemHeight;
  SendMessage(lphl->hParent, WM_MEASUREITEM, 0, (LPARAM)USER_HEAP_SEG_ADDR(hTemp));

  if (lphl->dwStyle & LBS_OWNERDRAWFIXED) {
    lphl->StdItemHeight = lpmeasure->itemHeight;
    lphl->needMeasure = FALSE;
  }

  USER_HEAP_FREE(hTemp);			
}


LPLISTSTRUCT ListBoxCreateItem(LPHEADLIST lphl, int id)
{
  LPLISTSTRUCT lplsnew = (LPLISTSTRUCT)malloc(sizeof(LISTSTRUCT));

  if (lplsnew == NULL) return NULL;
  
  lplsnew->itemState      = 0;
  lplsnew->mis.CtlType    = lphl->DrawCtlType;
  lplsnew->mis.CtlID      = lphl->CtlID;
  lplsnew->mis.itemID     = id;
  lplsnew->mis.itemHeight = lphl->StdItemHeight;
  lplsnew->mis.itemWidth  = 0; /* ignored */
  lplsnew->mis.itemData   = 0;
  SetRect(&lplsnew->itemRect, 0, 0, 0, 0);

  return lplsnew;
}


int ListBoxInsertString(LPHEADLIST lphl, UINT uIndex, LPSTR newstr)
{
  LPLISTSTRUCT *lppls, lplsnew, lpls;
  HANDLE       hStr;
  LPSTR	str;
  UINT	Count;
    
  dprintf_listbox(stddeb,"ListBoxInsertString(%d, %p);\n", uIndex, newstr);
    
  if (uIndex == (UINT)-1)
    uIndex = lphl->ItemsCount;

  lppls = &lphl->lpFirst;
  for(Count = 0; Count < uIndex; Count++) {
    if (*lppls == NULL) return LB_ERR;
    lppls = (LPLISTSTRUCT *) &(*lppls)->lpNext;
  }
    
  lplsnew = ListBoxCreateItem(lphl, Count);
  
  if (lplsnew == NULL) {
    printf("ListBoxInsertString() out of memory !\n");
    return LB_ERRSPACE;
  }

  lplsnew->lpNext = *lppls;
  *lppls = lplsnew;
  lphl->ItemsCount++;
  
  hStr = 0;
  if (lphl->HasStrings) {
    dprintf_listbox(stddeb,"  string: %s\n", newstr);
    hStr = LIST_HEAP_ALLOC(lphl, LMEM_MOVEABLE, strlen(newstr) + 1);
    str = (LPSTR)LIST_HEAP_ADDR(lphl, hStr);
    if (str == NULL) return LB_ERRSPACE;
    strcpy(str, newstr);
    lplsnew->itemText = str;
    /* I'm not so sure about the next one */
    lplsnew->mis.itemData = 0;
  } else {
    lplsnew->itemText = NULL;
    lplsnew->mis.itemData = (DWORD)newstr;
  }

  lplsnew->mis.itemID = uIndex;
  lplsnew->hData = hStr;
  
  /* adjust the itemID field of the following entries */
  for(lpls = lplsnew->lpNext; lpls != NULL; lpls = lpls->lpNext) {
      lpls->mis.itemID++;
  }
 
  if (lphl->needMeasure) {
    ListBoxAskMeasure(lphl, lplsnew);
  }

  dprintf_listbox(stddeb,"ListBoxInsertString // count=%d\n", lphl->ItemsCount);
  return uIndex;
}


int ListBoxAddString(LPHEADLIST lphl, LPSTR newstr)
{
    UINT pos = (UINT) -1;
    
    if (lphl->HasStrings && (lphl->dwStyle & LBS_SORT)) {
	LPLISTSTRUCT lpls = lphl->lpFirst;
	for (pos = 0; lpls != NULL; lpls = lpls->lpNext, pos++)
	    if (strcmp(lpls->itemText, newstr) >= 0)
		break;
    }
    return ListBoxInsertString(lphl, pos, newstr);
}


int ListBoxGetText(LPHEADLIST lphl, UINT uIndex, LPSTR OutStr)
{
  LPLISTSTRUCT lpls;

  if (!OutStr) {
    dprintf_listbox(stddeb, "ListBoxGetText // OutStr==NULL\n");
    return 0;
  }

  lpls = ListBoxGetItem (lphl, uIndex);
  if (lpls == NULL) return LB_ERR;

  if (!lphl->HasStrings) {
    *((long *)OutStr) = lpls->mis.itemData;
    return 4;
  }
	
  strcpy(OutStr, lpls->itemText);
  return strlen(OutStr);
}


DWORD ListBoxGetItemData(LPHEADLIST lphl, UINT uIndex)
{
  LPLISTSTRUCT lpls;

  lpls = ListBoxGetItem (lphl, uIndex);
  if (lpls == NULL) return LB_ERR;
  return lpls->mis.itemData;
}


int ListBoxSetItemData(LPHEADLIST lphl, UINT uIndex, DWORD ItemData)
{
  LPLISTSTRUCT lpls = ListBoxGetItem(lphl, uIndex);

  if (lpls == NULL) return LB_ERR;
  lpls->mis.itemData = ItemData;
  return 1;
}


int ListBoxDeleteString(LPHEADLIST lphl, UINT uIndex)
{
  LPLISTSTRUCT lpls, lpls2;
  UINT	Count;

  if (uIndex >= lphl->ItemsCount) return LB_ERR;

  lpls = lphl->lpFirst;
  if (lpls == NULL) return LB_ERR;

  if (uIndex == 0)
    lphl->lpFirst = lpls->lpNext;
  else {
    LPLISTSTRUCT lpls2 = NULL;
    for(Count = 0; Count < uIndex; Count++) {
      if (lpls->lpNext == NULL) return LB_ERR;

      lpls2 = lpls;
      lpls = (LPLISTSTRUCT)lpls->lpNext;
    }
    lpls2->lpNext = lpls->lpNext;
  }

  /* adjust the itemID field of the following entries */
  for(lpls2 = lpls->lpNext; lpls2 != NULL; lpls2 = lpls2->lpNext) {
      lpls2->mis.itemID--;
  }
 
  lphl->ItemsCount--;

  if (lpls->hData != 0) LIST_HEAP_FREE(lphl, lpls->hData);
  free(lpls);
  
  return lphl->ItemsCount;
}


int ListBoxFindString(LPHEADLIST lphl, UINT nFirst, SEGPTR MatchStr)
{
  LPLISTSTRUCT lpls;
  UINT	       Count;
  UINT         First = nFirst + 1;
  LPSTR        lpMatchStr = (LPSTR)MatchStr;

  if (First > lphl->ItemsCount) return LB_ERR;

  if (lphl->HasStrings) lpMatchStr = PTR_SEG_TO_LIN(MatchStr);
  
  lpls = ListBoxGetItem(lphl, First);
  Count = 0;
  while(lpls != NULL) {
    if (lphl->HasStrings) {
      if (strstr(lpls->itemText, lpMatchStr) == lpls->itemText) return Count;
    } else if (lphl->dwStyle & LBS_SORT) {
      /* XXX Do a compare item */
    }
    else
      if (lpls->mis.itemData == (DWORD)lpMatchStr) return Count;

    lpls = lpls->lpNext;
    Count++;
  }

  /* Start over at top */
  Count = 0;
  lpls = lphl->lpFirst;

  while (Count < First) {
    if (lphl->HasStrings) {
      if (strstr(lpls->itemText, lpMatchStr) == lpls->itemText) return Count;
    } else if (lphl->dwStyle & LBS_SORT) {
      /* XXX Do a compare item */
    } else {
      if (lpls->mis.itemData == (DWORD)lpMatchStr) return Count;
    }
    lpls = lpls->lpNext;
    Count++;
  }

  return LB_ERR;
}


int ListBoxResetContent(LPHEADLIST lphl)
{
    LPLISTSTRUCT lpls;
    int i;

    if (lphl->ItemsCount == 0) return 0;

    dprintf_listbox(stddeb, "ListBoxResetContent // ItemCount = %d\n",
	lphl->ItemsCount);

    for(i = 0; i < lphl->ItemsCount; i++) {
      lpls = lphl->lpFirst;
      if (lpls == NULL) return LB_ERR;
      
      lphl->lpFirst = lpls->lpNext;
      if (lpls->hData != 0) LIST_HEAP_FREE(lphl, lpls->hData);
      free(lpls);
    }
    ListBoxInitialize(lphl);

    return TRUE;
}


int ListBoxSetCurSel(LPHEADLIST lphl, WORD wIndex)
{
  LPLISTSTRUCT lpls;

  if (lphl->dwStyle & LBS_MULTIPLESEL) return 0;

  if (lphl->ItemFocused != -1) {
    lpls = ListBoxGetItem(lphl, lphl->ItemFocused);
    if (lpls == 0) return LB_ERR;
    lpls->itemState = 0;
  }

  if (wIndex != (UINT)-1) {
    lphl->ItemFocused = wIndex;
    lpls = ListBoxGetItem(lphl, wIndex);
    if (lpls == 0) return LB_ERR;
    lpls->itemState = ODS_SELECTED | ODS_FOCUS;

    return 0;
  }

  return LB_ERR;
}


int ListBoxSetSel(LPHEADLIST lphl, WORD wIndex, WORD state)
{
  LPLISTSTRUCT lpls;

  if (!(lphl->dwStyle & LBS_MULTIPLESEL)) return 0;

  if (wIndex == (UINT)-1) {
    for (lpls = lphl->lpFirst; lpls != NULL; lpls = lpls->lpNext) {
      lpls->itemState = state;
    }
    return 0;
  }

  if (wIndex >= lphl->ItemsCount) return LB_ERR;

  lpls = ListBoxGetItem(lphl, wIndex);
  lpls->itemState = state;

  return 0;
}


int ListBoxGetSel(LPHEADLIST lphl, WORD wIndex)
{
  LPLISTSTRUCT lpls = ListBoxGetItem(lphl, wIndex);

  if (lpls == NULL) return LB_ERR;
  return lpls->itemState;
}


int ListBoxDirectory(LPHEADLIST lphl, UINT attrib, LPSTR filespec)
{
  struct dosdirent *dp, *dp_old;
  char temp[256];
  int   drive;
  LPSTR tstr;

  dprintf_listbox(stddeb,"ListBoxDirectory: %s, %4x\n",filespec,attrib);

  if (strchr(filespec, '\\') || strchr(filespec, ':')) {
    drive = DOS_GetDefaultDrive();
    if (filespec[1] == ':') {
      drive = toupper(filespec[0]) - 'A';
      filespec += 2;
    }
    strcpy(temp,filespec);
    tstr = strrchr(temp, '\\');
    if (tstr != NULL) {
      *(tstr+1) = 0;
      filespec += tstr - temp + 1;
      if (!DOS_ChangeDir( drive, temp )) return 0;
    }
    DOS_SetDefaultDrive( drive );
    dprintf_listbox(stddeb,"Changing directory to %c:%s, filemask is %s\n",
		    drive+'A', temp, filespec);
  }

  if ((dp = (struct dosdirent *)DOS_opendir(filespec)) ==NULL) return 0;
  dp_old = dp;
  while ((dp = (struct dosdirent *)DOS_readdir(dp))) {
    if (!dp->inuse) break;
    dprintf_listbox(stddeb, "ListBoxDirectory %p '%s' !\n", dp->filename, 
		    dp->filename);
    if (dp->attribute & FA_DIREC) {
      if (attrib & DDL_DIRECTORY && strcmp(dp->filename, ".") != 0) {
	sprintf(temp, "[%s]", dp->filename);
	if (ListBoxAddString(lphl, temp) == LB_ERR) break;
      }
    } 
    else {
      if (attrib & DDL_EXCLUSIVE) {
	if (attrib & (DDL_READWRITE | DDL_READONLY | DDL_HIDDEN | DDL_SYSTEM)) {
	  if (ListBoxAddString(lphl, dp->filename) == LB_ERR) break;
	}
      } else {
	if (ListBoxAddString(lphl, dp->filename) == LB_ERR) break;
      }
    }
  }
  DOS_closedir(dp_old);
  
  if (attrib & DDL_DRIVES) {
    int x;
    for (x = 0; x != MAX_DOS_DRIVES ; x++) {
      if (DOS_ValidDrive(x)) {
	sprintf(temp, "[-%c-]", 'a'+x);
	if (ListBoxInsertString(lphl, (UINT)-1, temp) == LB_ERR) break;
      }		
    }
  }
  return 1;
}


int ListBoxGetItemRect(LPHEADLIST lphl, WORD wIndex, LPRECT lprect)
{
  LPLISTSTRUCT lpls = ListBoxGetItem(lphl,wIndex);

  if (lpls == NULL) return LB_ERR;
  *lprect = lpls->itemRect;
  return 0;
}


int ListBoxSetItemHeight(LPHEADLIST lphl, WORD wIndex, long height)
{
  LPLISTSTRUCT lpls;

  if (!(lphl->dwStyle & LBS_OWNERDRAWVARIABLE)) {
    lphl->StdItemHeight = (short)height;
    return 0;
  }
  
  lpls = ListBoxGetItem(lphl, wIndex);
  if (lpls == NULL) return LB_ERR;
  
  lpls->mis.itemHeight = height;
  return 0;
}


int ListBoxFindNextMatch(LPHEADLIST lphl, WORD wChar)
{
  LPLISTSTRUCT lpls;
  UINT	       count,first;

  if ((char)wChar < ' ') return LB_ERR;
  if (!lphl->HasStrings) return LB_ERR;

  lpls = lphl->lpFirst;
  
  for (count = 0; lpls != NULL; lpls = lpls->lpNext, count++) {
    if (tolower(*lpls->itemText) == tolower((char)wChar)) break;
  }
  if (lpls == NULL) return LB_ERR;
  first = count;
  for(; lpls != NULL; lpls = lpls->lpNext, count++) {
    if (*lpls->itemText != (char)wChar) 
      break;
    if (count > lphl->ItemFocused)
      return count;
  }
  return first;
}

/***********************************************************************
 *           LBCreate
 */
static LONG LBCreate(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST   lphl;
  RECT rect;

  CreateListBoxStruct(hwnd, ODT_LISTBOX, GetWindowLong(hwnd,GWL_STYLE), GetParent(hwnd));
  lphl = ListBoxGetStorageHeader(hwnd);
  dprintf_listbox(stddeb,"ListBox WM_CREATE %p !\n", lphl);

  GetClientRect(hwnd,&rect);
  lphl->ColumnsWidth = rect.right - rect.left;

  SetScrollRange(hwnd, SB_VERT, 0, ListMaxFirstVisible(lphl), TRUE);
  SetScrollRange(hwnd, SB_HORZ, 1, 1, TRUE);

  return 0;
}

/***********************************************************************
 *           LBDestroy
 */
static LONG LBDestroy(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

  ListBoxResetContent(lphl);

  DestroyListBoxStruct(lphl);
  dprintf_listbox(stddeb,"ListBox WM_DESTROY %p !\n", lphl);
  return 0;
}

/***********************************************************************
 *           LBVScroll
 */
static LONG LBVScroll(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  int  y;

  dprintf_listbox(stddeb,"ListBox WM_VSCROLL w=%04X l=%08lX !\n",
		  wParam, lParam);
  y = lphl->FirstVisible;

  switch(wParam) {
  case SB_LINEUP:
    if (lphl->FirstVisible > 0)
      lphl->FirstVisible--;
    break;

  case SB_LINEDOWN:
    lphl->FirstVisible++;
    break;

  case SB_PAGEUP:
    if (lphl->FirstVisible > lphl->ItemsVisible) {
      lphl->FirstVisible -= lphl->ItemsVisible;
    } else {
      lphl->FirstVisible = 0;
    }
    break;

  case SB_PAGEDOWN:
    lphl->FirstVisible += lphl->ItemsVisible;
    break;

  case SB_THUMBTRACK:
    lphl->FirstVisible = LOWORD(lParam);
    break;
  }

  if (lphl->FirstVisible > ListMaxFirstVisible(lphl))
    lphl->FirstVisible = ListMaxFirstVisible(lphl);

  if (y != lphl->FirstVisible) {
    SetScrollPos(hwnd, SB_VERT, lphl->FirstVisible, TRUE);
    InvalidateRect(hwnd, NULL, TRUE);
  }
  return 0;
}

/***********************************************************************
 *           LBHScroll
 */
static LONG LBHScroll(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl;
  int        y;

  dprintf_listbox(stddeb,"ListBox WM_HSCROLL w=%04X l=%08lX !\n",
		  wParam, lParam);
  lphl = ListBoxGetStorageHeader(hwnd);
  y = lphl->FirstVisible;
  switch(wParam) {
  case SB_LINEUP:
    if (lphl->FirstVisible > lphl->ItemsPerColumn) {
      lphl->FirstVisible -= lphl->ItemsPerColumn;
    } else {
      lphl->FirstVisible = 0;
    }
    break;
  case SB_LINEDOWN:
    lphl->FirstVisible += lphl->ItemsPerColumn;
    break;
  case SB_PAGEUP:
    if (lphl->ItemsPerColumn != 0) {
      int lbsub = lphl->ItemsVisible / lphl->ItemsPerColumn * lphl->ItemsPerColumn;
      if (lphl->FirstVisible > lbsub) {
	lphl->FirstVisible -= lbsub;
      } else {
	lphl->FirstVisible = 0;
      }
    }
    break;
  case SB_PAGEDOWN:
    if (lphl->ItemsPerColumn != 0)
      lphl->FirstVisible += lphl->ItemsVisible /
	lphl->ItemsPerColumn * lphl->ItemsPerColumn;
    break;
  case SB_THUMBTRACK:
    lphl->FirstVisible = lphl->ItemsPerColumn * LOWORD(lParam);
    break;
  } 
  if (lphl->FirstVisible > ListMaxFirstVisible(lphl))
    lphl->FirstVisible = ListMaxFirstVisible(lphl);

  if (lphl->ItemsPerColumn != 0) {
    lphl->FirstVisible = lphl->FirstVisible /
      lphl->ItemsPerColumn * lphl->ItemsPerColumn + 1;
    if (y != lphl->FirstVisible) {
      SetScrollPos(hwnd, SB_HORZ, lphl->FirstVisible / 
		   lphl->ItemsPerColumn + 1, TRUE);
      InvalidateRect(hwnd, NULL, TRUE);
    }
  }
  return 0;
}

/***********************************************************************
 *           LBLButtonDown
 */
static LONG LBLButtonDown(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  WORD       wRet;
  int        y;
  RECT       rectsel;

  SetFocus(hwnd);
  SetCapture(hwnd);

  lphl->PrevFocused = lphl->ItemFocused;

  y = ListBoxFindMouse(lphl, LOWORD(lParam), HIWORD(lParam));
  if (y == -1)
    return 0;

  if (lphl->dwStyle & LBS_MULTIPLESEL) {
    lphl->ItemFocused = y;
    wRet = ListBoxGetSel(lphl, y);
    ListBoxSetSel(lphl, y, !wRet);
  } else {
    ListBoxSetCurSel(lphl, y);
  }
  if (lphl->dwStyle & LBS_MULTIPLESEL)
    ListBoxSendNotification(lphl, hwnd, LBN_SELCHANGE);

  ListBoxGetItemRect(lphl, y, &rectsel);

  InvalidateRect(hwnd, NULL, TRUE);

  return 0;
}

/***********************************************************************
 *           LBLButtonUp
 */
static LONG LBLButtonUp(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

  if (GetCapture() == hwnd) ReleaseCapture();

  if (lphl->PrevFocused != lphl->ItemFocused)
    ListBoxSendNotification(lphl, hwnd, LBN_SELCHANGE);

  return 0;
}

/***********************************************************************
 *           LBRButtonUp
 */
static LONG LBRButtonUp(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

#ifdef WINELIB32
  SendMessage(lphl->hParent, WM_COMMAND, 
	      MAKEWPARAM(GetWindowWord(hwnd,GWW_ID),LBN_DBLCLK),
	      (LPARAM)hwnd);
#else
  SendMessage(lphl->hParent, WM_COMMAND, GetWindowWord(hwnd,GWW_ID),
		MAKELONG(hwnd, LBN_DBLCLK));
#endif

  return 0;
}

/***********************************************************************
 *           LBMouseMove
 */
static LONG LBMouseMove(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  int  y;
  WORD wRet;
  RECT rect, rectsel;   /* XXX Broken */

  dprintf_listbox(stddeb,"LBMouseMove %d %d\n",SLOWORD(lParam),SHIWORD(lParam));
  if ((wParam & MK_LBUTTON) != 0) {
    y = SHIWORD(lParam);
    if (y < 0) {
      if (lphl->FirstVisible > 0) {
	lphl->FirstVisible--;
	SetScrollPos(hwnd, SB_VERT, lphl->FirstVisible, TRUE);
	InvalidateRect(hwnd, NULL, TRUE);
	return 0;
      }
    }
    GetClientRect(hwnd, &rect);
    if (y >= rect.bottom) {
      if (lphl->FirstVisible < ListMaxFirstVisible(lphl)) {
	lphl->FirstVisible++;
	SetScrollPos(hwnd, SB_VERT, lphl->FirstVisible, TRUE);
	InvalidateRect(hwnd, NULL, TRUE);
	return 0;
      }
    }
    if ((y > 0) && (y < (rect.bottom - 4))) {
      if ((y < rectsel.top) || (y > rectsel.bottom)) {
	wRet = ListBoxFindMouse(lphl, LOWORD(lParam), HIWORD(lParam));
	if (wRet == lphl->ItemFocused)  {
	  return 0;
	}
	if (lphl->dwStyle & LBS_MULTIPLESEL) {
	  lphl->ItemFocused = wRet;
	  ListBoxSendNotification(lphl, hwnd, LBN_SELCHANGE);
	} else {
	  ListBoxSetCurSel(lphl, wRet);
	}
	ListBoxGetItemRect(lphl, wRet, &rectsel);
	InvalidateRect(hwnd, NULL, TRUE);
      }
    }
  }

  return 0;
}

/***********************************************************************
 *           LBKeyDown
 */
static LONG LBKeyDown(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  WORD       newFocused = lphl->ItemFocused;

  if (wParam == VK_SPACE) {
    if (lphl->dwStyle & LBS_MULTIPLESEL) {
      WORD wRet = ListBoxGetSel(lphl, lphl->ItemFocused);
      ListBoxSetSel(lphl, lphl->ItemFocused, !wRet);
    }
    return 0;
  }
  switch(wParam) {
  case VK_HOME:
    newFocused = 0;
    break;
  case VK_END:
    newFocused = lphl->ItemsCount - 1;
    break;
  case VK_LEFT:
    if (lphl->dwStyle & LBS_MULTICOLUMN) {
      if (newFocused >= lphl->ItemsPerColumn) {
	newFocused -= lphl->ItemsPerColumn;
      } else {
	newFocused = 0;
      }
    }
    break;
  case VK_UP:
    if (newFocused > 0) newFocused--;
    break;
  case VK_RIGHT:
    if (lphl->dwStyle & LBS_MULTICOLUMN) {
      newFocused += lphl->ItemsPerColumn;
    }
    break;
  case VK_DOWN:
    newFocused++;
    break;
  case VK_PRIOR:
    if (newFocused > lphl->ItemsVisible) {
      newFocused -= lphl->ItemsVisible;
    } else {
      newFocused = 0;
    }
    break;
  case VK_NEXT:
    newFocused += lphl->ItemsVisible;
    break;
  default:
    return 0;
  }

  if (newFocused >= lphl->ItemsCount)
    newFocused = lphl->ItemsCount - 1;
  
  if (!(lphl->dwStyle & LBS_MULTIPLESEL)) {
    ListBoxSetCurSel(lphl, newFocused);
    ListBoxSendNotification(lphl, hwnd, LBN_SELCHANGE);
  }

  lphl->ItemFocused = newFocused;
  ListBoxScrollToFocus(lphl); 
  SetScrollPos(hwnd, SB_VERT, lphl->FirstVisible, TRUE);
  InvalidateRect(hwnd, NULL, TRUE);

  return 0;
}

/***********************************************************************
 *           LBChar
 */
static LONG LBChar(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  WORD       newFocused;

  newFocused = ListBoxFindNextMatch(lphl, wParam);
  if (newFocused == (WORD)LB_ERR) return 0;

  if (newFocused >= lphl->ItemsCount)
    newFocused = lphl->ItemsCount - 1;
  if (!(lphl->dwStyle & LBS_MULTIPLESEL)) {
    ListBoxSetCurSel(lphl, newFocused);
    ListBoxSendNotification(lphl, hwnd, LBN_SELCHANGE);
  }

  lphl->ItemFocused = newFocused;
  ListBoxScrollToFocus(lphl);
  SetScrollPos(hwnd, SB_VERT, lphl->FirstVisible, TRUE);
  InvalidateRect(hwnd, NULL, TRUE);

  return 0;
}

/***********************************************************************
 *           LBSetRedraw
 */
static LONG LBSetRedraw(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST  lphl = ListBoxGetStorageHeader(hwnd);

  dprintf_listbox(stddeb,"ListBox WM_SETREDRAW hWnd="NPFMT" w=%04X !\n",
		  hwnd, wParam);
  lphl->bRedrawFlag = wParam;

  return 0;
}

/***********************************************************************
 *           LBSetFont
 */
static LONG LBSetFont(HWND hwnd, WPARAM wParam, LPARAM lParam)
{
  LPHEADLIST  lphl = ListBoxGetStorageHeader(hwnd);

  if (wParam == 0)
    lphl->hFont = GetStockObject(SYSTEM_FONT);
  else
    lphl->hFont = (HFONT) wParam;

  return 0;
}

/***********************************************************************
 *           LBPaint
 */
static LONG LBPaint(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST   lphl = ListBoxGetStorageHeader(hwnd);
  LPLISTSTRUCT lpls;
  PAINTSTRUCT  ps;
  HBRUSH       hBrush;
  HFONT        hOldFont;
  HDC 	hdc;
  RECT 	rect;
  int   i, top, height, maxwidth, ipc;

  top = 0;
  hdc = BeginPaint( hwnd, &ps );

  if (!IsWindowVisible(hwnd) || !lphl->bRedrawFlag) {
    EndPaint(hwnd, &ps);
    return 0;
  }

  hOldFont = SelectObject(hdc, lphl->hFont);

#ifdef WINELIB32
  hBrush = (HBRUSH) SendMessage(lphl->hParent, WM_CTLCOLORLISTBOX, (WPARAM)hdc,
				(LPARAM)hwnd);
#else
  hBrush = SendMessage(lphl->hParent, WM_CTLCOLOR, hdc,
		       MAKELONG(hwnd, CTLCOLOR_LISTBOX));
#endif

  if (hBrush == 0) hBrush = GetStockObject(WHITE_BRUSH);

  GetClientRect(hwnd, &rect);
  FillRect(hdc, &rect, hBrush);

  maxwidth = rect.right;
  if (lphl->dwStyle & LBS_MULTICOLUMN) {
    rect.right = lphl->ColumnsWidth;
  }
  lpls = lphl->lpFirst;

  lphl->ItemsVisible = 0;
  lphl->ItemsPerColumn = ipc = 0;

  for(i = 0; i < lphl->ItemsCount; i++) {
    if (lpls == NULL) break;

    if (i >= lphl->FirstVisible) {
      height = lpls->mis.itemHeight;

      if (top > rect.bottom) {
	if (lphl->dwStyle & LBS_MULTICOLUMN) {
	  lphl->ItemsPerColumn = MAX(lphl->ItemsPerColumn, ipc);
	  ipc = 0;
	  top = 0;
	  rect.left += lphl->ColumnsWidth;
	  rect.right += lphl->ColumnsWidth;
	  if (rect.left > maxwidth) break;
	} else {
	  break;
	}
      }

      lpls->itemRect.top    = top;
      lpls->itemRect.bottom = top + height;
      lpls->itemRect.left   = rect.left;
      lpls->itemRect.right  = rect.right;

      dprintf_listbox(stddeb,"drawing item: %d %d %d %d %d\n",rect.left,top,rect.right,top+height,lpls->itemState);
      if (lphl->OwnerDrawn) {
	ListBoxDrawItem (hwnd, lphl, hdc, lpls, &lpls->itemRect, ODA_DRAWENTIRE, 0);
	if (lpls->itemState)
	  ListBoxDrawItem (hwnd, lphl, hdc, lpls, &lpls->itemRect, ODA_SELECT, ODS_SELECTED);
      } else {
	ListBoxDrawItem (hwnd, lphl, hdc, lpls, &lpls->itemRect, ODA_DRAWENTIRE, 
			 lpls->itemState);
      }
      if ((lphl->ItemFocused == i) && GetFocus() == hwnd)
	ListBoxDrawItem (hwnd,lphl, hdc, lpls, &lpls->itemRect, ODA_FOCUS, ODS_FOCUS);

      top += height;
      lphl->ItemsVisible++;
      ipc++;
    }

    lpls = lpls->lpNext;
  }
  ListBoxUpdateWindow(hwnd,lphl,FALSE);
  SelectObject(hdc,hOldFont);
  EndPaint( hwnd, &ps );
  return 0;
}

/***********************************************************************
 *           LBSetFocus
 */
static LONG LBSetFocus(HWND hwnd, WORD wParam, LONG lParam)
{
  dprintf_listbox(stddeb,"ListBox WM_SETFOCUS !\n");

  return 0;
}

/***********************************************************************
 *           LBKillFocus
 */
static LONG LBKillFocus(HWND hwnd, WORD wParam, LONG lParam)
{
  dprintf_listbox(stddeb,"ListBox WM_KILLFOCUS !\n");

  InvalidateRect(hwnd, NULL, TRUE);
  
  return 0;
}

/***********************************************************************
 *           LBResetContent
 */
static LONG LBResetContent(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

  dprintf_listbox(stddeb,"ListBox LB_RESETCONTENT !\n");
  ListBoxResetContent(lphl);
  ListBoxUpdateWindow(hwnd, lphl, TRUE);
  return 0;
}

/***********************************************************************
 *           LBDir
 */
static LONG LBDir(HWND hwnd, WORD wParam, LONG lParam)
{
  WORD   wRet;
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  dprintf_listbox(stddeb,"ListBox LB_DIR !\n");

  wRet = ListBoxDirectory(lphl, wParam, (LPSTR)PTR_SEG_TO_LIN(lParam));
  ListBoxUpdateWindow(hwnd, lphl, TRUE);
  return wRet;
}

/***********************************************************************
 *           LBAddString
 */
static LONG LBAddString(HWND hwnd, WORD wParam, LONG lParam)
{
  WORD  wRet;
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

  if (lphl->HasStrings)
    wRet = ListBoxAddString(lphl, (LPSTR)PTR_SEG_TO_LIN(lParam));
  else
    wRet = ListBoxAddString(lphl, (LPSTR)lParam);

  ListBoxUpdateWindow(hwnd,lphl,TRUE);
  return wRet;
}

/***********************************************************************
 *           LBGetText
 */
static LONG LBGetText(HWND hwnd, WORD wParam, LONG lParam)
{
  LONG   wRet;
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

  dprintf_listbox(stddeb, "LB_GETTEXT  wParam=%d\n",wParam);
  wRet = ListBoxGetText(lphl, wParam, (LPSTR)PTR_SEG_TO_LIN(lParam));

  return wRet;
}

/***********************************************************************
 *           LBInsertString
 */
static LONG LBInsertString(HWND hwnd, WORD wParam, LONG lParam)
{
  WORD  wRet;
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

  if (lphl->HasStrings)
    wRet = ListBoxInsertString(lphl, wParam, (LPSTR)PTR_SEG_TO_LIN(lParam));
  else
    wRet = ListBoxInsertString(lphl, wParam, (LPSTR)lParam);

  ListBoxUpdateWindow(hwnd,lphl,TRUE);
  return wRet;
}

/***********************************************************************
 *           LBDeleteString
 */
static LONG LBDeleteString(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  LONG lRet = ListBoxDeleteString(lphl,wParam);
  
  ListBoxUpdateWindow(hwnd,lphl,TRUE);
  return lRet;
}

/***********************************************************************
 *           LBFindString
 */
static LONG LBFindString(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  return ListBoxFindString(lphl, wParam, lParam);
}

/***********************************************************************
 *           LBGetCaretIndex
 */
static LONG LBGetCaretIndex(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  return lphl->ItemFocused;
}

/***********************************************************************
 *           LBGetCount
 */
static LONG LBGetCount(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST  lphl;

  lphl = ListBoxGetStorageHeader(hwnd);
  return lphl->ItemsCount;
}

/***********************************************************************
 *           LBGetCurSel
 */
static LONG LBGetCurSel(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST  lphl;

  lphl = ListBoxGetStorageHeader(hwnd);
  dprintf_listbox(stddeb,"ListBox LB_GETCURSEL %u !\n", 
		  lphl->ItemFocused);
  return lphl->ItemFocused;
}

/***********************************************************************
 *           LBGetHorizontalExtent
 */
static LONG LBGetHorizontalExtent(HWND hwnd, WORD wParam, LONG lParam)
{    
  return 0;
}

/***********************************************************************
 *           LBGetItemHeight
 */
static LONG LBGetItemHeight(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  LPLISTSTRUCT lpls = ListBoxGetItem (lphl, wParam);
  
  if (lpls == NULL) return LB_ERR;
  return lpls->mis.itemHeight;
}

/***********************************************************************
 *           LBGetItemRect
 */
static LONG LBGetItemRect(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  return ListBoxGetItemRect(lphl, wParam, PTR_SEG_TO_LIN(lParam));
}

/***********************************************************************
 *           LBGetSel
 */
static LONG LBGetSel(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  return ListBoxGetSel(lphl, wParam);
}

/***********************************************************************
 *           LBGetSelCount
 */
static LONG LBGetSelCount(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  LPLISTSTRUCT lpls;
  int          cnt = 0;

  if (!(lphl->dwStyle & LBS_MULTIPLESEL)) return LB_ERR;

  lpls = lphl->lpFirst;

  while (lpls != NULL) {
    if (lpls->itemState > 0) cnt++;

    lpls = lpls->lpNext;
  }

  return cnt;
}

/***********************************************************************
 *           LBGetSelItems
 */
static LONG LBGetSelItems(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST  lphl = ListBoxGetStorageHeader(hwnd);
  LPLISTSTRUCT lpls;
  int cnt, idx;
  int *lpItems = PTR_SEG_TO_LIN(lParam);

  if (!(lphl->dwStyle & LBS_MULTIPLESEL)) return LB_ERR;

  if (wParam == 0) return 0;

  lpls = lphl->lpFirst;
  cnt = 0; idx = 0;

  while (lpls != NULL) {
    if (lpls->itemState > 0) lpItems[cnt++] = idx;

    if (cnt == wParam) break;
    idx++;
    lpls = lpls->lpNext;
  }

  return cnt;
}

/***********************************************************************
 *           LBGetTextLen
 */
static LONG LBGetTextLen(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST   lphl = ListBoxGetStorageHeader(hwnd);
  LPLISTSTRUCT lpls = ListBoxGetItem(lphl,wParam);

  if (lpls == NULL || !lphl->HasStrings) return LB_ERR;
  return strlen(lpls->itemText);
}

/***********************************************************************
 *           LBGetDlgCode
 */
static LONG LBGetDlgCode(HWND hwnd, WORD wParam, LONG lParam)
{
  return DLGC_WANTARROWS | DLGC_WANTCHARS;
}

/***********************************************************************
 *           LBGetTopIndex
 */
static LONG LBGetTopIndex(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

  return lphl->FirstVisible;
}


/***********************************************************************
 *           LBSelectString
 */
static LONG LBSelectString(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  WORD  wRet;

  wRet = ListBoxFindString(lphl, wParam, lParam);

  /* XXX add functionality here */

  return 0;
}

/***********************************************************************
 *           LBSelItemRange
 */
static LONG LBSelItemRange(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST   lphl = ListBoxGetStorageHeader(hwnd);
  LPLISTSTRUCT lpls;
  WORD         cnt;
  WORD         first = LOWORD(lParam);
  WORD         last = HIWORD(lParam);
  BOOL         select = wParam;

  if (!(lphl->dwStyle & LBS_MULTIPLESEL)) return LB_ERR;

  if (first >= lphl->ItemsCount ||
      last >= lphl->ItemsCount) return LB_ERR;

  lpls = lphl->lpFirst;
  cnt = 0;

  while (lpls != NULL) {
    if (cnt++ >= first)
      lpls->itemState = select ? ODS_SELECTED : 0;

    if (cnt > last)
      break;

    lpls = lpls->lpNext;
  }

  return 0;
}

/***********************************************************************
 *           LBSetCaretIndex
 */
static LONG LBSetCaretIndex(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

  if (!(lphl->dwStyle & LBS_MULTIPLESEL)) return 0;
  if (wParam >= lphl->ItemsCount) return LB_ERR;

  lphl->ItemFocused = wParam;
  ListBoxScrollToFocus (lphl);

  SetScrollPos(hwnd, SB_VERT, lphl->FirstVisible, TRUE);
  InvalidateRect(hwnd, NULL, TRUE);
  return 0;
}

/***********************************************************************
 *           LBSetColumnWidth
 */
static LONG LBSetColumnWidth(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  lphl->ColumnsWidth = wParam;
  InvalidateRect(hwnd,NULL,TRUE);
  return 0;
}

/***********************************************************************
 *           LBSetHorizontalExtent
 */
static LONG LBSetHorizontalExtent(HWND hwnd, WORD wParam, LONG lParam)
{
  return 0;
}

/***********************************************************************
 *           LBGetItemData
 */
static LONG LBGetItemData(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  dprintf_listbox(stddeb, "LB_GETITEMDATA wParam=%x\n", wParam);
  return ListBoxGetItemData(lphl, wParam);
}

/***********************************************************************
 *           LBSetItemData
 */
static LONG LBSetItemData(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  dprintf_listbox(stddeb, "LB_SETITEMDATA  wParam=%x  lParam=%lx\n", wParam, lParam);
  return ListBoxSetItemData(lphl, wParam, lParam);
}

/***********************************************************************
 *           LBSetTabStops
 */
static LONG LBSetTabStops(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST  lphl;

  lphl = ListBoxGetStorageHeader(hwnd);

  if (lphl->TabStops != NULL) {
    lphl->iNumStops = 0;
    free (lphl->TabStops);
  }

  lphl->TabStops = malloc (wParam * sizeof (short));
  if (lphl->TabStops) {
    lphl->iNumStops = wParam;
    memcpy (lphl->TabStops, PTR_SEG_TO_LIN(lParam), wParam * sizeof (short));
    return TRUE;
  }

  return FALSE;
}

/***********************************************************************
 *           LBSetCurSel
 */
static LONG LBSetCurSel(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  WORD  wRet;

  dprintf_listbox(stddeb,"ListBox LB_SETCURSEL wParam=%x !\n", 
		  wParam);

  wRet = ListBoxSetCurSel(lphl, wParam);

  SetScrollPos(hwnd, SB_VERT, lphl->FirstVisible, TRUE);
  InvalidateRect(hwnd, NULL, TRUE);

  return wRet;
}

/***********************************************************************
 *           LBSetSel
 */
static LONG LBSetSel(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  WORD wRet;

  dprintf_listbox(stddeb,"ListBox LB_SETSEL wParam=%x lParam=%lX !\n", wParam, lParam);

  wRet = ListBoxSetSel(lphl, LOWORD(lParam), wParam);
  InvalidateRect(hwnd, NULL, TRUE);

  return wRet;
}

/***********************************************************************
 *           LBSetTopIndex
 */
static LONG LBSetTopIndex(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);

  dprintf_listbox(stddeb,"ListBox LB_SETTOPINDEX wParam=%x !\n",
		  wParam);
  lphl->FirstVisible = wParam;
  SetScrollPos(hwnd, SB_VERT, lphl->FirstVisible, TRUE);

  InvalidateRect(hwnd, NULL, TRUE);

  return 0;
}

/***********************************************************************
 *           LBSetItemHeight
 */
static LONG LBSetItemHeight(HWND hwnd, WORD wParam, LONG lParam)
{
  LPHEADLIST lphl = ListBoxGetStorageHeader(hwnd);
  WORD wRet;
  
  dprintf_listbox(stddeb,"ListBox LB_SETITEMHEIGHT wParam=%x lParam=%lX !\n", wParam, lParam);
  wRet = ListBoxSetItemHeight(lphl, wParam, lParam);
  InvalidateRect(hwnd,NULL,TRUE);
  return wRet;
}

/***********************************************************************
 *           ListBoxWndProc 
 */
LRESULT ListBoxWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{ 
    switch (message) {
     case WM_CREATE: return LBCreate(hwnd, wParam, lParam);
     case WM_DESTROY: return LBDestroy(hwnd, wParam, lParam);
     case WM_GETDLGCODE: return LBGetDlgCode(hwnd, wParam, lParam);
     case WM_VSCROLL: return LBVScroll(hwnd, wParam, lParam);
     case WM_HSCROLL: return LBHScroll(hwnd, wParam, lParam);
     case WM_LBUTTONDOWN: return LBLButtonDown(hwnd, wParam, lParam);
     case WM_LBUTTONUP: return LBLButtonUp(hwnd, wParam, lParam);
     case WM_RBUTTONUP: return LBRButtonUp(hwnd, wParam, lParam);
     case WM_LBUTTONDBLCLK: return LBRButtonUp(hwnd, wParam, lParam);
     case WM_MOUSEMOVE: return LBMouseMove(hwnd, wParam, lParam);
     case WM_KEYDOWN: return LBKeyDown(hwnd, wParam, lParam);
     case WM_CHAR: return LBChar(hwnd, wParam, lParam);
     case WM_SETFONT: return LBSetFont(hwnd, wParam, lParam);
     case WM_SETREDRAW: return LBSetRedraw(hwnd, wParam, lParam);
     case WM_PAINT: return LBPaint(hwnd, wParam, lParam);
     case WM_SETFOCUS: return LBSetFocus(hwnd, wParam, lParam);
     case WM_KILLFOCUS: return LBKillFocus(hwnd, wParam, lParam);
     case LB_RESETCONTENT: return LBResetContent(hwnd, wParam, lParam);
     case LB_DIR: return LBDir(hwnd, wParam, lParam);
     case LB_ADDSTRING: return LBAddString(hwnd, wParam, lParam);
     case LB_INSERTSTRING: return LBInsertString(hwnd, wParam, lParam);
     case LB_DELETESTRING: return LBDeleteString(hwnd, wParam, lParam);
     case LB_FINDSTRING: return LBFindString(hwnd, wParam, lParam);
     case LB_GETCARETINDEX: return LBGetCaretIndex(hwnd, wParam, lParam);
     case LB_GETCOUNT: return LBGetCount(hwnd, wParam, lParam);
     case LB_GETCURSEL: return LBGetCurSel(hwnd, wParam, lParam);
     case LB_GETHORIZONTALEXTENT: return LBGetHorizontalExtent(hwnd, wParam, lParam);
     case LB_GETITEMDATA: return LBGetItemData(hwnd, wParam, lParam);
     case LB_GETITEMHEIGHT: return LBGetItemHeight(hwnd, wParam, lParam);
     case LB_GETITEMRECT: return LBGetItemRect(hwnd, wParam, lParam);
     case LB_GETSEL: return LBGetSel(hwnd, wParam, lParam);
     case LB_GETSELCOUNT: return LBGetSelCount(hwnd, wParam, lParam);
     case LB_GETSELITEMS: return LBGetSelItems(hwnd, wParam, lParam);
     case LB_GETTEXT: return LBGetText(hwnd, wParam, lParam);
     case LB_GETTEXTLEN: return LBGetTextLen(hwnd, wParam, lParam);
     case LB_GETTOPINDEX: return LBGetTopIndex(hwnd, wParam, lParam);
     case LB_SELECTSTRING: return LBSelectString(hwnd, wParam, lParam);
     case LB_SELITEMRANGE: return LBSelItemRange(hwnd, wParam, lParam);
     case LB_SETCARETINDEX: return LBSetCaretIndex(hwnd, wParam, lParam);
     case LB_SETCOLUMNWIDTH: return LBSetColumnWidth(hwnd, wParam, lParam);
     case LB_SETHORIZONTALEXTENT: return LBSetHorizontalExtent(hwnd, wParam, lParam);
     case LB_SETITEMDATA: return LBSetItemData(hwnd, wParam, lParam);
     case LB_SETTABSTOPS: return LBSetTabStops(hwnd, wParam, lParam);
     case LB_SETCURSEL: return LBSetCurSel(hwnd, wParam, lParam);
     case LB_SETSEL: return LBSetSel(hwnd, wParam, lParam);
     case LB_SETTOPINDEX: return LBSetTopIndex(hwnd, wParam, lParam);
     case LB_SETITEMHEIGHT: return LBSetItemHeight(hwnd, wParam, lParam);
    }
    
    return DefWindowProc(hwnd, message, wParam, lParam);
}

/************************************************************************
 * 		      	DlgDirSelect			[USER.99]
 */
BOOL DlgDirSelect(HWND hDlg, LPSTR lpStr, int nIDLBox)
{
  HWND hwnd;
  LPHEADLIST lphl;
  char s[130];

  dprintf_listbox( stddeb, "DlgDirSelect("NPFMT", '%s', %d) \n", hDlg, lpStr, 
		  nIDLBox );

  hwnd = GetDlgItem(hDlg, nIDLBox);
  lphl = ListBoxGetStorageHeader(hwnd);
  if(lphl->ItemFocused == -1) {
    dprintf_listbox(stddeb, "Nothing selected!\n");
    return FALSE;
  }
  ListBoxGetText(lphl, lphl->ItemFocused, s);
  dprintf_listbox(stddeb, "Selection is %s\n", s);
  if( s[0] == '[' ) {
    if( s[1] == '-' ) {
      strncpy( lpStr, s+2, strlen(s)-4 );    /* device name */
      lpStr[ strlen(s)-4 ] = 0;
      strcat( lpStr, ":" );
    }
    else {
      strncpy( lpStr, s+1, strlen(s)-2 );    /* directory name */
      lpStr[ strlen(s)-2 ] = 0;
      strcat( lpStr, "\\" );
    }
    dprintf_listbox( stddeb, "Returning %s\n", lpStr );
    return TRUE;
  } else {
    strcpy( lpStr, s );                     /* file name */
    dprintf_listbox( stddeb, "Returning %s\n", lpStr );
    return FALSE;
  }
}


/************************************************************************
 * 			   DlgDirList		       	[USER.100]
 */
int DlgDirList(HWND hDlg, LPSTR lpPathSpec, 
	       int nIDLBox, int nIDStat, WORD wType)
{
  HWND	hWnd;
  int ret;
  
  dprintf_listbox(stddeb,"DlgDirList("NPFMT", '%s', %d, %d, %04X) \n",
		  hDlg, lpPathSpec, nIDLBox, nIDStat, wType);
  if (nIDLBox)  {
    LPHEADLIST lphl;
    hWnd = GetDlgItem(hDlg, nIDLBox);
    lphl = ListBoxGetStorageHeader(hWnd);
    ListBoxResetContent(lphl);
    ret = ListBoxDirectory(lphl, wType, lpPathSpec);
    ListBoxUpdateWindow(hWnd, lphl, TRUE);
  } else {
    ret = 0;
  }
  if (nIDStat) {
      int drive;
      HANDLE hTemp;
      char *temp;
      drive = DOS_GetDefaultDrive();
      hTemp = USER_HEAP_ALLOC( 256 );
      temp = (char *) USER_HEAP_LIN_ADDR( hTemp );
      strcpy( temp+3, DOS_GetCurrentDir(drive) );
      if( temp[3] == '\\' ) {
	temp[1] = 'A'+drive;
	temp[2] = ':';
	SendDlgItemMessage( hDlg, nIDStat, WM_SETTEXT, 0,
                            (LPARAM)(USER_HEAP_SEG_ADDR(hTemp) + 1) );
      } else {
	temp[0] = 'A'+drive;
	temp[1] = ':';
	temp[2] = '\\';
	SendDlgItemMessage( hDlg, nIDStat, WM_SETTEXT, 0,
                            (LPARAM)USER_HEAP_SEG_ADDR(hTemp) );
      }
      USER_HEAP_FREE( hTemp );
  } 
  return ret;
}