/*
 * Tool tip control
 *
 * Copyright 1998, 1999 Eric Kohl
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * TODO:
 *   - Custom draw support.
 *   - Balloon tips.
 *   - Messages.
 *
 * Testing:
 *   - Run tests using Waite Group Windows95 API Bible Volume 2.
 *     The second cdrom (chapter 3) contains executables activate.exe,
 *     curtool.exe, deltool.exe, enumtools.exe, getinfo.exe, getiptxt.exe,
 *     hittest.exe, needtext.exe, newrect.exe, updtext.exe and winfrpt.exe.
 *
 *   Timer logic.
 *
 * One important point to remember is that tools don't necessarily get
 * a WM_MOUSEMOVE once the cursor leaves the tool, an example is when
 * a tool sets TTF_IDISHWND (i.e. an entire window is a tool) because
 * here WM_MOUSEMOVEs only get sent when the cursor is inside the
 * client area.  Therefore the only reliable way to know that the
 * cursor has left a tool is to keep a timer running and check the
 * position every time it expires.  This is the role of timer
 * ID_TIMERLEAVE.
 *
 *
 * On entering a tool (detected in a relayed WM_MOUSEMOVE) we start
 * ID_TIMERSHOW, if this times out and we're still in the tool we show
 * the tip.  On showing a tip we start both ID_TIMERPOP and
 * ID_TIMERLEAVE.  On hiding a tooltip we kill ID_TIMERPOP.
 * ID_TIMERPOP is restarted on every relayed WM_MOUSEMOVE.  If
 * ID_TIMERPOP expires the tool is hidden and ID_TIMERPOP is killed.
 * ID_TIMERLEAVE remains running - this is important as we need to
 * determine when the cursor leaves the tool.
 *
 * When ID_TIMERLEAVE expires or on a relayed WM_MOUSEMOVE if we're
 * still in the tool do nothing (apart from restart ID_TIMERPOP if
 * this is a WM_MOUSEMOVE) (ID_TIMERLEAVE remains running).  If we've
 * left the tool and entered another one then hide the tip and start
 * ID_TIMERSHOW with time ReshowTime and kill ID_TIMERLEAVE.  If we're
 * outside all tools hide the tip and kill ID_TIMERLEAVE.  On Relayed
 * mouse button messages hide the tip but leave ID_TIMERLEAVE running,
 * this again will let us keep track of when the cursor leaves the
 * tool.
 *
 *
 * infoPtr->nTool is the tool the mouse was on on the last relayed MM
 * or timer expiry or -1 if the mouse was not on a tool.
 *
 * infoPtr->nCurrentTool is the tool for which the tip is currently
 * displaying text for or -1 if the tip is not shown.  Actually this
 * will only ever be infoPtr-nTool or -1, so it could be changed to a
 * BOOL.
 *
 */


#include <stdarg.h>
#include <string.h>

#include "windef.h"
#include "winbase.h"
#include "wine/unicode.h"
#include "wingdi.h"
#include "winuser.h"
#include "winnls.h"
#include "commctrl.h"
#include "comctl32.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(tooltips);

typedef struct
{
    UINT      uFlags;
    HWND      hwnd;
    BOOL      bNotifyUnicode;
    UINT      uId;
    RECT      rect;
    HINSTANCE hinst;
    LPWSTR      lpszText;
    LPARAM      lParam;
} TTTOOL_INFO;


typedef struct
{
    WCHAR      szTipText[INFOTIPSIZE];
    BOOL     bActive;
    BOOL     bTrackActive;
    UINT     uNumTools;
    COLORREF   clrBk;
    COLORREF   clrText;
    HFONT    hFont;
    INT      xTrackPos;
    INT      yTrackPos;
    INT      nMaxTipWidth;
    INT      nTool; /* tool that mouse was on on last relayed mouse move */
    INT      nCurrentTool;
    INT      nTrackTool;
    INT      nReshowTime;
    INT      nAutoPopTime;
    INT      nInitialTime;
    RECT     rcMargin;

    TTTOOL_INFO *tools;
} TOOLTIPS_INFO;

#define ID_TIMERSHOW   1    /* show delay timer */
#define ID_TIMERPOP    2    /* auto pop timer */
#define ID_TIMERLEAVE  3    /* tool leave timer */


#define TOOLTIPS_GetInfoPtr(hWindow) ((TOOLTIPS_INFO *)GetWindowLongA (hWindow, 0))


LRESULT CALLBACK
TOOLTIPS_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uId, DWORD_PTR dwRef);


static VOID
TOOLTIPS_Refresh (HWND hwnd, HDC hdc)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr(hwnd);
    RECT rc;
    INT oldBkMode;
    HFONT hOldFont;
    HBRUSH hBrush;
    UINT uFlags = DT_EXTERNALLEADING;

    if (infoPtr->nMaxTipWidth > -1)
	uFlags |= DT_WORDBREAK;
    if (GetWindowLongA (hwnd, GWL_STYLE) & TTS_NOPREFIX)
	uFlags |= DT_NOPREFIX;
    GetClientRect (hwnd, &rc);

    /* fill the background */
    hBrush = CreateSolidBrush (infoPtr->clrBk);
    FillRect (hdc, &rc, hBrush);
    DeleteObject (hBrush);

    /* calculate text rectangle */
    rc.left   += (2 + infoPtr->rcMargin.left);
    rc.top    += (2 + infoPtr->rcMargin.top);
    rc.right  -= (2 + infoPtr->rcMargin.right);
    rc.bottom -= (2 + infoPtr->rcMargin.bottom);

    /* draw text */
    oldBkMode = SetBkMode (hdc, TRANSPARENT);
    SetTextColor (hdc, infoPtr->clrText);
    hOldFont = SelectObject (hdc, infoPtr->hFont);
    DrawTextW (hdc, infoPtr->szTipText, -1, &rc, uFlags);
    SelectObject (hdc, hOldFont);
    if (oldBkMode != TRANSPARENT)
	SetBkMode (hdc, oldBkMode);
}

static void TOOLTIPS_GetDispInfoA(HWND hwnd, TOOLTIPS_INFO *infoPtr, TTTOOL_INFO *toolPtr)
{
    NMTTDISPINFOA ttnmdi;

    /* fill NMHDR struct */
    ZeroMemory (&ttnmdi, sizeof(NMTTDISPINFOA));
    ttnmdi.hdr.hwndFrom = hwnd;
    ttnmdi.hdr.idFrom = toolPtr->uId;
    ttnmdi.hdr.code = TTN_GETDISPINFOA;
    ttnmdi.lpszText = (LPSTR)&ttnmdi.szText;
    ttnmdi.uFlags = toolPtr->uFlags;
    ttnmdi.lParam = toolPtr->lParam;

    TRACE("hdr.idFrom = %x\n", ttnmdi.hdr.idFrom);
    SendMessageA(toolPtr->hwnd, WM_NOTIFY,
                 (WPARAM)toolPtr->uId, (LPARAM)&ttnmdi);

    if (HIWORD((UINT)ttnmdi.lpszText) == 0) {
        LoadStringW(ttnmdi.hinst, (UINT)ttnmdi.lpszText,
               infoPtr->szTipText, INFOTIPSIZE);
        if (ttnmdi.uFlags & TTF_DI_SETITEM) {
            toolPtr->hinst = ttnmdi.hinst;
            toolPtr->lpszText = (LPWSTR)ttnmdi.lpszText;
        }
    }
    else if (ttnmdi.lpszText == 0) {
        /* no text available */
        infoPtr->szTipText[0] = '\0';
    }
    else if (ttnmdi.lpszText != LPSTR_TEXTCALLBACKA) {
        INT max_len = (ttnmdi.lpszText == &ttnmdi.szText[0]) ? 
                sizeof(ttnmdi.szText)/sizeof(ttnmdi.szText[0]) : -1;
        MultiByteToWideChar(CP_ACP, 0, ttnmdi.lpszText, max_len,
                            infoPtr->szTipText, INFOTIPSIZE);
        if (ttnmdi.uFlags & TTF_DI_SETITEM) {
            INT len = MultiByteToWideChar(CP_ACP, 0, ttnmdi.lpszText,
					  max_len, NULL, 0);
            toolPtr->hinst = 0;
            toolPtr->lpszText =	Alloc (len * sizeof(WCHAR));
            MultiByteToWideChar(CP_ACP, 0, ttnmdi.lpszText, -1,
                                toolPtr->lpszText, len);
        }
    }
    else {
        ERR("recursive text callback!\n");
        infoPtr->szTipText[0] = '\0';
    }
}

static void TOOLTIPS_GetDispInfoW(HWND hwnd, TOOLTIPS_INFO *infoPtr, TTTOOL_INFO *toolPtr)
{
    NMTTDISPINFOW ttnmdi;

    /* fill NMHDR struct */
    ZeroMemory (&ttnmdi, sizeof(NMTTDISPINFOW));
    ttnmdi.hdr.hwndFrom = hwnd;
    ttnmdi.hdr.idFrom = toolPtr->uId;
    ttnmdi.hdr.code = TTN_GETDISPINFOW;
    ttnmdi.lpszText = (LPWSTR)&ttnmdi.szText;
    ttnmdi.uFlags = toolPtr->uFlags;
    ttnmdi.lParam = toolPtr->lParam;

    TRACE("hdr.idFrom = %x\n", ttnmdi.hdr.idFrom);
    SendMessageW(toolPtr->hwnd, WM_NOTIFY,
                 (WPARAM)toolPtr->uId, (LPARAM)&ttnmdi);

    if (HIWORD((UINT)ttnmdi.lpszText) == 0) {
        LoadStringW(ttnmdi.hinst, (UINT)ttnmdi.lpszText,
               infoPtr->szTipText, INFOTIPSIZE);
        if (ttnmdi.uFlags & TTF_DI_SETITEM) {
            toolPtr->hinst = ttnmdi.hinst;
            toolPtr->lpszText = ttnmdi.lpszText;
        }
    }
    else if (ttnmdi.lpszText == 0) {
        /* no text available */
        infoPtr->szTipText[0] = '\0';
    }
    else if (ttnmdi.lpszText != LPSTR_TEXTCALLBACKW) {
        INT max_len = (ttnmdi.lpszText == &ttnmdi.szText[0]) ? 
                sizeof(ttnmdi.szText)/sizeof(ttnmdi.szText[0]) : INFOTIPSIZE-1;
        strncpyW(infoPtr->szTipText, ttnmdi.lpszText, max_len);
        if (ttnmdi.uFlags & TTF_DI_SETITEM) {
            INT len = max(strlenW(ttnmdi.lpszText), max_len);
            toolPtr->hinst = 0;
            toolPtr->lpszText =	Alloc ((len+1) * sizeof(WCHAR));
            memcpy(toolPtr->lpszText, ttnmdi.lpszText, (len+1) * sizeof(WCHAR));
        }
    }
    else {
        ERR("recursive text callback!\n");
        infoPtr->szTipText[0] = '\0';
    }
}

static VOID
TOOLTIPS_GetTipText (HWND hwnd, TOOLTIPS_INFO *infoPtr, INT nTool)
{
    TTTOOL_INFO *toolPtr = &infoPtr->tools[nTool];

    if (HIWORD((UINT)toolPtr->lpszText) == 0) {
	/* load a resource */
	TRACE("load res string %p %x\n",
	       toolPtr->hinst, (int)toolPtr->lpszText);
	LoadStringW (toolPtr->hinst, (UINT)toolPtr->lpszText,
		       infoPtr->szTipText, INFOTIPSIZE);
    }
    else if (toolPtr->lpszText) {
	if (toolPtr->lpszText == LPSTR_TEXTCALLBACKW) {
	    if (toolPtr->bNotifyUnicode)
		TOOLTIPS_GetDispInfoW(hwnd, infoPtr, toolPtr);
	    else
		TOOLTIPS_GetDispInfoA(hwnd, infoPtr, toolPtr);
	}
	else {
	    /* the item is a usual (unicode) text */
	    lstrcpynW (infoPtr->szTipText, toolPtr->lpszText, INFOTIPSIZE);
	}
    }
    else {
	/* no text available */
	infoPtr->szTipText[0] = L'\0';
    }

    TRACE("%s\n", debugstr_w(infoPtr->szTipText));
}


static VOID
TOOLTIPS_CalcTipSize (HWND hwnd, TOOLTIPS_INFO *infoPtr, LPSIZE lpSize)
{
    HDC hdc;
    HFONT hOldFont;
    UINT uFlags = DT_EXTERNALLEADING | DT_CALCRECT;
    RECT rc = {0, 0, 0, 0};

    if (infoPtr->nMaxTipWidth > -1) {
	rc.right = infoPtr->nMaxTipWidth;
	uFlags |= DT_WORDBREAK;
    }
    if (GetWindowLongA (hwnd, GWL_STYLE) & TTS_NOPREFIX)
	uFlags |= DT_NOPREFIX;
    TRACE("%s\n", debugstr_w(infoPtr->szTipText));

    hdc = GetDC (hwnd);
    hOldFont = SelectObject (hdc, infoPtr->hFont);
    DrawTextW (hdc, infoPtr->szTipText, -1, &rc, uFlags);
    SelectObject (hdc, hOldFont);
    ReleaseDC (hwnd, hdc);

    lpSize->cx = rc.right - rc.left + 4 +
		 infoPtr->rcMargin.left + infoPtr->rcMargin.right;
    lpSize->cy = rc.bottom - rc.top + 4 +
		 infoPtr->rcMargin.bottom + infoPtr->rcMargin.top;
}


static VOID
TOOLTIPS_Show (HWND hwnd, TOOLTIPS_INFO *infoPtr)
{
    TTTOOL_INFO *toolPtr;
    RECT rect, wndrect;
    SIZE size;
    NMHDR  hdr;

    if (infoPtr->nTool == -1) {
	TRACE("invalid tool (-1)!\n");
	return;
    }

    infoPtr->nCurrentTool = infoPtr->nTool;

    TRACE("Show tooltip pre %d! (%p)\n", infoPtr->nTool, hwnd);

    TOOLTIPS_GetTipText (hwnd, infoPtr, infoPtr->nCurrentTool);

    if (infoPtr->szTipText[0] == L'\0') {
	infoPtr->nCurrentTool = -1;
	return;
    }

    TRACE("Show tooltip %d!\n", infoPtr->nCurrentTool);
    toolPtr = &infoPtr->tools[infoPtr->nCurrentTool];

    hdr.hwndFrom = hwnd;
    hdr.idFrom = toolPtr->uId;
    hdr.code = TTN_SHOW;
    SendMessageA (toolPtr->hwnd, WM_NOTIFY,
		    (WPARAM)toolPtr->uId, (LPARAM)&hdr);

    TRACE("%s\n", debugstr_w(infoPtr->szTipText));

    TOOLTIPS_CalcTipSize (hwnd, infoPtr, &size);
    TRACE("size %ld x %ld\n", size.cx, size.cy);

    if (toolPtr->uFlags & TTF_CENTERTIP) {
	RECT rc;

	if (toolPtr->uFlags & TTF_IDISHWND)
	    GetWindowRect ((HWND)toolPtr->uId, &rc);
	else {
	    rc = toolPtr->rect;
	    MapWindowPoints (toolPtr->hwnd, NULL, (LPPOINT)&rc, 2);
	}
	rect.left = (rc.left + rc.right - size.cx) / 2;
	rect.top  = rc.bottom + 2;
    }
    else {
	GetCursorPos ((LPPOINT)&rect);
	rect.top += 20;
    }

    TRACE("pos %ld - %ld\n", rect.left, rect.top);

    rect.right = rect.left + size.cx;
    rect.bottom = rect.top + size.cy;

    /* check position */
    wndrect.right = GetSystemMetrics( SM_CXSCREEN );
    if( rect.right > wndrect.right ) {
	   rect.left -= rect.right - wndrect.right + 2;
	   rect.right = wndrect.right - 2;
    }
    wndrect.bottom = GetSystemMetrics( SM_CYSCREEN );
    if( rect.bottom > wndrect.bottom ) {
        RECT rc;

	if (toolPtr->uFlags & TTF_IDISHWND)
	    GetWindowRect ((HWND)toolPtr->uId, &rc);
	else {
	    rc = toolPtr->rect;
	    MapWindowPoints (toolPtr->hwnd, NULL, (LPPOINT)&rc, 2);
	}
	rect.bottom = rc.top - 2;
    	rect.top = rect.bottom - size.cy;
    }

    AdjustWindowRectEx (&rect, GetWindowLongA (hwnd, GWL_STYLE),
			FALSE, GetWindowLongA (hwnd, GWL_EXSTYLE));

    SetWindowPos (hwnd, HWND_TOP, rect.left, rect.top,
		    rect.right - rect.left, rect.bottom - rect.top,
		    SWP_SHOWWINDOW | SWP_NOACTIVATE);

    /* repaint the tooltip */
    InvalidateRect(hwnd, NULL, TRUE);
    UpdateWindow(hwnd);

    SetTimer (hwnd, ID_TIMERPOP, infoPtr->nAutoPopTime, 0);
    TRACE("timer 2 started!\n");
    SetTimer (hwnd, ID_TIMERLEAVE, infoPtr->nReshowTime, 0);
    TRACE("timer 3 started!\n");
}


static VOID
TOOLTIPS_Hide (HWND hwnd, TOOLTIPS_INFO *infoPtr)
{
    TTTOOL_INFO *toolPtr;
    NMHDR hdr;

    TRACE("Hide tooltip %d! (%p)\n", infoPtr->nCurrentTool, hwnd);

    if (infoPtr->nCurrentTool == -1)
	return;

    toolPtr = &infoPtr->tools[infoPtr->nCurrentTool];
    KillTimer (hwnd, ID_TIMERPOP);

    hdr.hwndFrom = hwnd;
    hdr.idFrom = toolPtr->uId;
    hdr.code = TTN_POP;
    SendMessageA (toolPtr->hwnd, WM_NOTIFY,
		    (WPARAM)toolPtr->uId, (LPARAM)&hdr);

    infoPtr->nCurrentTool = -1;

    SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0,
		    SWP_NOZORDER | SWP_HIDEWINDOW | SWP_NOACTIVATE);
}


static VOID
TOOLTIPS_TrackShow (HWND hwnd, TOOLTIPS_INFO *infoPtr)
{
    TTTOOL_INFO *toolPtr;
    RECT rect;
    SIZE size;
    NMHDR hdr;

    if (infoPtr->nTrackTool == -1) {
	TRACE("invalid tracking tool (-1)!\n");
	return;
    }

    TRACE("show tracking tooltip pre %d!\n", infoPtr->nTrackTool);

    TOOLTIPS_GetTipText (hwnd, infoPtr, infoPtr->nTrackTool);

    if (infoPtr->szTipText[0] == L'\0') {
	infoPtr->nTrackTool = -1;
	return;
    }

    TRACE("show tracking tooltip %d!\n", infoPtr->nTrackTool);
    toolPtr = &infoPtr->tools[infoPtr->nTrackTool];

    hdr.hwndFrom = hwnd;
    hdr.idFrom = toolPtr->uId;
    hdr.code = TTN_SHOW;
    SendMessageA (toolPtr->hwnd, WM_NOTIFY,
		    (WPARAM)toolPtr->uId, (LPARAM)&hdr);

    TRACE("%s\n", debugstr_w(infoPtr->szTipText));

    TOOLTIPS_CalcTipSize (hwnd, infoPtr, &size);
    TRACE("size %ld x %ld\n", size.cx, size.cy);

    if (toolPtr->uFlags & TTF_ABSOLUTE) {
	rect.left = infoPtr->xTrackPos;
	rect.top  = infoPtr->yTrackPos;

	if (toolPtr->uFlags & TTF_CENTERTIP) {
	    rect.left -= (size.cx / 2);
	    rect.top  -= (size.cy / 2);
	}
    }
    else {
	RECT rcTool;

	if (toolPtr->uFlags & TTF_IDISHWND)
	    GetWindowRect ((HWND)toolPtr->uId, &rcTool);
	else {
	    rcTool = toolPtr->rect;
	    MapWindowPoints (toolPtr->hwnd, NULL, (LPPOINT)&rcTool, 2);
	}

	GetCursorPos ((LPPOINT)&rect);
	rect.top += 20;

	if (toolPtr->uFlags & TTF_CENTERTIP) {
	    rect.left -= (size.cx / 2);
	    rect.top  -= (size.cy / 2);
	}

	/* smart placement */
	if ((rect.left + size.cx > rcTool.left) && (rect.left < rcTool.right) &&
	    (rect.top + size.cy > rcTool.top) && (rect.top < rcTool.bottom))
	    rect.left = rcTool.right;
    }

    TRACE("pos %ld - %ld\n", rect.left, rect.top);

    rect.right = rect.left + size.cx;
    rect.bottom = rect.top + size.cy;

    AdjustWindowRectEx (&rect, GetWindowLongA (hwnd, GWL_STYLE),
			FALSE, GetWindowLongA (hwnd, GWL_EXSTYLE));

    SetWindowPos (hwnd, HWND_TOP, rect.left, rect.top,
		    rect.right - rect.left, rect.bottom - rect.top,
		    SWP_SHOWWINDOW | SWP_NOACTIVATE );

    InvalidateRect(hwnd, NULL, TRUE);
    UpdateWindow(hwnd);
}


static VOID
TOOLTIPS_TrackHide (HWND hwnd, TOOLTIPS_INFO *infoPtr)
{
    TTTOOL_INFO *toolPtr;
    NMHDR hdr;

    TRACE("hide tracking tooltip %d\n", infoPtr->nTrackTool);

    if (infoPtr->nTrackTool == -1)
	return;

    toolPtr = &infoPtr->tools[infoPtr->nTrackTool];

    hdr.hwndFrom = hwnd;
    hdr.idFrom = toolPtr->uId;
    hdr.code = TTN_POP;
    SendMessageA (toolPtr->hwnd, WM_NOTIFY,
		    (WPARAM)toolPtr->uId, (LPARAM)&hdr);

    SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0,
		    SWP_NOZORDER | SWP_HIDEWINDOW | SWP_NOACTIVATE);
}


static INT
TOOLTIPS_GetToolFromInfoA (TOOLTIPS_INFO *infoPtr, LPTTTOOLINFOA lpToolInfo)
{
    TTTOOL_INFO *toolPtr;
    INT nTool;

    for (nTool = 0; nTool < infoPtr->uNumTools; nTool++) {
	toolPtr = &infoPtr->tools[nTool];

	if (!(toolPtr->uFlags & TTF_IDISHWND) &&
	    (lpToolInfo->hwnd == toolPtr->hwnd) &&
	    (lpToolInfo->uId == toolPtr->uId))
	    return nTool;
    }

    for (nTool = 0; nTool < infoPtr->uNumTools; nTool++) {
	toolPtr = &infoPtr->tools[nTool];

	if ((toolPtr->uFlags & TTF_IDISHWND) &&
	    (lpToolInfo->uId == toolPtr->uId))
	    return nTool;
    }

    return -1;
}


static INT
TOOLTIPS_GetToolFromInfoW (TOOLTIPS_INFO *infoPtr, LPTTTOOLINFOW lpToolInfo)
{
    TTTOOL_INFO *toolPtr;
    INT nTool;

    for (nTool = 0; nTool < infoPtr->uNumTools; nTool++) {
	toolPtr = &infoPtr->tools[nTool];

	if (!(toolPtr->uFlags & TTF_IDISHWND) &&
	    (lpToolInfo->hwnd == toolPtr->hwnd) &&
	    (lpToolInfo->uId == toolPtr->uId))
	    return nTool;
    }

    for (nTool = 0; nTool < infoPtr->uNumTools; nTool++) {
	toolPtr = &infoPtr->tools[nTool];

	if ((toolPtr->uFlags & TTF_IDISHWND) &&
	    (lpToolInfo->uId == toolPtr->uId))
	    return nTool;
    }

    return -1;
}


static INT
TOOLTIPS_GetToolFromPoint (TOOLTIPS_INFO *infoPtr, HWND hwnd, LPPOINT lpPt)
{
    TTTOOL_INFO *toolPtr;
    INT  nTool;

    for (nTool = 0; nTool < infoPtr->uNumTools; nTool++) {
	toolPtr = &infoPtr->tools[nTool];

	if (!(toolPtr->uFlags & TTF_IDISHWND)) {
	    if (hwnd != toolPtr->hwnd)
		continue;
	    if (!PtInRect (&toolPtr->rect, *lpPt))
		continue;
	    return nTool;
	}
    }

    for (nTool = 0; nTool < infoPtr->uNumTools; nTool++) {
	toolPtr = &infoPtr->tools[nTool];

	if (toolPtr->uFlags & TTF_IDISHWND) {
	    if ((HWND)toolPtr->uId == hwnd)
		return nTool;
	}
    }

    return -1;
}


static BOOL
TOOLTIPS_IsWindowActive (HWND hwnd)
{
    HWND hwndActive = GetActiveWindow ();
    if (!hwndActive)
	return FALSE;
    if (hwndActive == hwnd)
	return TRUE;
    return IsChild (hwndActive, hwnd);
}


static INT
TOOLTIPS_CheckTool (HWND hwnd, BOOL bShowTest)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    POINT pt;
    HWND hwndTool;
    INT nTool;

    GetCursorPos (&pt);
    hwndTool = (HWND)SendMessageA (hwnd, TTM_WINDOWFROMPOINT, 0, (LPARAM)&pt);
    if (hwndTool == 0)
	return -1;

    ScreenToClient (hwndTool, &pt);
    nTool = TOOLTIPS_GetToolFromPoint (infoPtr, hwndTool, &pt);
    if (nTool == -1)
	return -1;

    if (!(GetWindowLongA (hwnd, GWL_STYLE) & TTS_ALWAYSTIP) && bShowTest) {
	if (!TOOLTIPS_IsWindowActive (GetWindow (hwnd, GW_OWNER)))
	    return -1;
    }

    TRACE("tool %d\n", nTool);

    return nTool;
}


static LRESULT
TOOLTIPS_Activate (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    infoPtr->bActive = (BOOL)wParam;

    if (infoPtr->bActive)
	TRACE("activate!\n");

    if (!(infoPtr->bActive) && (infoPtr->nCurrentTool != -1))
	TOOLTIPS_Hide (hwnd, infoPtr);

    return 0;
}


static LRESULT
TOOLTIPS_AddToolA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOA lpToolInfo = (LPTTTOOLINFOA)lParam;
    TTTOOL_INFO *toolPtr;
    INT nResult;

    if (lpToolInfo == NULL)
	return FALSE;
    if (lpToolInfo->cbSize < TTTOOLINFOA_V1_SIZE)
	return FALSE;

    TRACE("add tool (%p) %p %d%s!\n",
	   hwnd, lpToolInfo->hwnd, lpToolInfo->uId,
	   (lpToolInfo->uFlags & TTF_IDISHWND) ? " TTF_IDISHWND" : "");

    if (infoPtr->uNumTools == 0) {
	infoPtr->tools = Alloc (sizeof(TTTOOL_INFO));
	toolPtr = infoPtr->tools;
    }
    else {
	TTTOOL_INFO *oldTools = infoPtr->tools;
	infoPtr->tools =
	    Alloc (sizeof(TTTOOL_INFO) * (infoPtr->uNumTools + 1));
	memcpy (infoPtr->tools, oldTools,
		infoPtr->uNumTools * sizeof(TTTOOL_INFO));
	Free (oldTools);
	toolPtr = &infoPtr->tools[infoPtr->uNumTools];
    }

    infoPtr->uNumTools++;

    /* copy tool data */
    toolPtr->uFlags = lpToolInfo->uFlags;
    toolPtr->hwnd   = lpToolInfo->hwnd;
    toolPtr->uId    = lpToolInfo->uId;
    toolPtr->rect   = lpToolInfo->rect;
    toolPtr->hinst  = lpToolInfo->hinst;

    if (HIWORD(lpToolInfo->lpszText) == 0) {
	TRACE("add string id %x!\n", (int)lpToolInfo->lpszText);
	toolPtr->lpszText = (LPWSTR)lpToolInfo->lpszText;
    }
    else if (lpToolInfo->lpszText) {
	if (lpToolInfo->lpszText == LPSTR_TEXTCALLBACKA) {
	    TRACE("add CALLBACK!\n");
	    toolPtr->lpszText = LPSTR_TEXTCALLBACKW;
	}
	else {
	    INT len = MultiByteToWideChar(CP_ACP, 0, lpToolInfo->lpszText, -1,
					  NULL, 0);
	    TRACE("add text \"%s\"!\n", lpToolInfo->lpszText);
	    toolPtr->lpszText =	Alloc (len * sizeof(WCHAR));
	    MultiByteToWideChar(CP_ACP, 0, lpToolInfo->lpszText, -1,
				toolPtr->lpszText, len);
	}
    }

    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOA))
	toolPtr->lParam = lpToolInfo->lParam;

    /* install subclassing hook */
    if (toolPtr->uFlags & TTF_SUBCLASS) {
	if (toolPtr->uFlags & TTF_IDISHWND) {
	    SetWindowSubclass((HWND)toolPtr->uId, TOOLTIPS_SubclassProc, 1,
			       (DWORD_PTR)hwnd);
	}
	else {
	    SetWindowSubclass(toolPtr->hwnd, TOOLTIPS_SubclassProc, 1,
			      (DWORD_PTR)hwnd);
	}
	TRACE("subclassing installed!\n");
    }

    nResult = (INT) SendMessageA (toolPtr->hwnd, WM_NOTIFYFORMAT,
				  (WPARAM)hwnd, (LPARAM)NF_QUERY);
    if (nResult == NFR_ANSI) {
        toolPtr->bNotifyUnicode = FALSE;
	TRACE(" -- WM_NOTIFYFORMAT returns: NFR_ANSI\n");
    } else if (nResult == NFR_UNICODE) {
        toolPtr->bNotifyUnicode = TRUE;
	TRACE(" -- WM_NOTIFYFORMAT returns: NFR_UNICODE\n");
    } else {
        TRACE (" -- WM_NOTIFYFORMAT returns: error!\n");
    }

    return TRUE;
}


static LRESULT
TOOLTIPS_AddToolW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOW lpToolInfo = (LPTTTOOLINFOW)lParam;
    TTTOOL_INFO *toolPtr;
    INT nResult;

    if (lpToolInfo == NULL)
	return FALSE;
    if (lpToolInfo->cbSize < TTTOOLINFOW_V1_SIZE)
	return FALSE;

    TRACE("add tool (%p) %p %d%s!\n",
	   hwnd, lpToolInfo->hwnd, lpToolInfo->uId,
	   (lpToolInfo->uFlags & TTF_IDISHWND) ? " TTF_IDISHWND" : "");

    if (infoPtr->uNumTools == 0) {
	infoPtr->tools = Alloc (sizeof(TTTOOL_INFO));
	toolPtr = infoPtr->tools;
    }
    else {
	TTTOOL_INFO *oldTools = infoPtr->tools;
	infoPtr->tools =
	    Alloc (sizeof(TTTOOL_INFO) * (infoPtr->uNumTools + 1));
	memcpy (infoPtr->tools, oldTools,
		infoPtr->uNumTools * sizeof(TTTOOL_INFO));
	Free (oldTools);
	toolPtr = &infoPtr->tools[infoPtr->uNumTools];
    }

    infoPtr->uNumTools++;

    /* copy tool data */
    toolPtr->uFlags = lpToolInfo->uFlags;
    toolPtr->hwnd   = lpToolInfo->hwnd;
    toolPtr->uId    = lpToolInfo->uId;
    toolPtr->rect   = lpToolInfo->rect;
    toolPtr->hinst  = lpToolInfo->hinst;

    if (HIWORD(lpToolInfo->lpszText) == 0) {
	TRACE("add string id %x!\n", (int)lpToolInfo->lpszText);
	toolPtr->lpszText = (LPWSTR)lpToolInfo->lpszText;
    }
    else if (lpToolInfo->lpszText) {
	if (lpToolInfo->lpszText == LPSTR_TEXTCALLBACKW) {
	    TRACE("add CALLBACK!\n");
	    toolPtr->lpszText = LPSTR_TEXTCALLBACKW;
	}
	else {
	    INT len = lstrlenW (lpToolInfo->lpszText);
	    TRACE("add text %s!\n",
		   debugstr_w(lpToolInfo->lpszText));
	    toolPtr->lpszText =	Alloc ((len + 1)*sizeof(WCHAR));
	    strcpyW (toolPtr->lpszText, lpToolInfo->lpszText);
	}
    }

    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOW))
	toolPtr->lParam = lpToolInfo->lParam;

    /* install subclassing hook */
    if (toolPtr->uFlags & TTF_SUBCLASS) {
	if (toolPtr->uFlags & TTF_IDISHWND) {
	    SetWindowSubclass((HWND)toolPtr->uId, TOOLTIPS_SubclassProc, 1,
			      (DWORD_PTR)hwnd);
	}
	else {
	    SetWindowSubclass(toolPtr->hwnd, TOOLTIPS_SubclassProc, 1,
			      (DWORD_PTR)hwnd);
	}
	TRACE("subclassing installed!\n");
    }

    nResult = (INT) SendMessageA (toolPtr->hwnd, WM_NOTIFYFORMAT,
				  (WPARAM)hwnd, (LPARAM)NF_QUERY);
    if (nResult == NFR_ANSI) {
        toolPtr->bNotifyUnicode = FALSE;
	TRACE(" -- WM_NOTIFYFORMAT returns: NFR_ANSI\n");
    } else if (nResult == NFR_UNICODE) {
        toolPtr->bNotifyUnicode = TRUE;
	TRACE(" -- WM_NOTIFYFORMAT returns: NFR_UNICODE\n");
    } else {
        TRACE (" -- WM_NOTIFYFORMAT returns: error!\n");
    }

    return TRUE;
}


static void TOOLTIPS_DelToolCommon (HWND hwnd, TOOLTIPS_INFO *infoPtr, INT nTool)
{
    TTTOOL_INFO *toolPtr;

    TRACE("tool %d\n", nTool);

    if (nTool == -1)
        return;

    /* make sure the tooltip has disappeared before deleting it */
    TOOLTIPS_Hide(hwnd, infoPtr);

    /* delete text string */
    toolPtr = &infoPtr->tools[nTool];
    if (toolPtr->lpszText) {
	if ( (toolPtr->lpszText != LPSTR_TEXTCALLBACKW) &&
	     (HIWORD((INT)toolPtr->lpszText) != 0) )
	    Free (toolPtr->lpszText);
    }

    /* remove subclassing */
    if (toolPtr->uFlags & TTF_SUBCLASS) {
	if (toolPtr->uFlags & TTF_IDISHWND) {
	    RemoveWindowSubclass((HWND)toolPtr->uId, TOOLTIPS_SubclassProc, 1);
	}
	else {
	    RemoveWindowSubclass(toolPtr->hwnd, TOOLTIPS_SubclassProc, 1);
	}
    }

    /* delete tool from tool list */
    if (infoPtr->uNumTools == 1) {
	Free (infoPtr->tools);
	infoPtr->tools = NULL;
    }
    else {
	TTTOOL_INFO *oldTools = infoPtr->tools;
	infoPtr->tools =
	    Alloc (sizeof(TTTOOL_INFO) * (infoPtr->uNumTools - 1));

	if (nTool > 0)
	    memcpy (&infoPtr->tools[0], &oldTools[0],
		    nTool * sizeof(TTTOOL_INFO));

	if (nTool < infoPtr->uNumTools - 1)
	    memcpy (&infoPtr->tools[nTool], &oldTools[nTool + 1],
		    (infoPtr->uNumTools - nTool - 1) * sizeof(TTTOOL_INFO));

	Free (oldTools);
    }

    /* update any indices affected by delete */

    /* destroying tool that mouse was on on last relayed mouse move */
    if (infoPtr->nTool == nTool)
        /* -1 means no current tool (0 means first tool) */
        infoPtr->nTool = -1;
    else if (infoPtr->nTool > nTool)
        infoPtr->nTool--;

    if (infoPtr->nTrackTool == nTool)
        /* -1 means no current tool (0 means first tool) */
        infoPtr->nTrackTool = -1;
    else if (infoPtr->nTrackTool > nTool)
        infoPtr->nTrackTool--;

    if (infoPtr->nCurrentTool == nTool)
        /* -1 means no current tool (0 means first tool) */
        infoPtr->nCurrentTool = -1;
    else if (infoPtr->nCurrentTool > nTool)
        infoPtr->nCurrentTool--;

    infoPtr->uNumTools--;
}

static LRESULT
TOOLTIPS_DelToolA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOA lpToolInfo = (LPTTTOOLINFOA)lParam;
    INT nTool;

    if (lpToolInfo == NULL)
	return 0;
    if (lpToolInfo->cbSize < TTTOOLINFOA_V1_SIZE)
	return 0;
    if (infoPtr->uNumTools == 0)
	return 0;

    nTool = TOOLTIPS_GetToolFromInfoA (infoPtr, lpToolInfo);

    TOOLTIPS_DelToolCommon (hwnd, infoPtr, nTool);

    return 0;
}


static LRESULT
TOOLTIPS_DelToolW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOW lpToolInfo = (LPTTTOOLINFOW)lParam;
    INT nTool;

    if (lpToolInfo == NULL)
	return 0;
    if (lpToolInfo->cbSize < TTTOOLINFOW_V1_SIZE)
	return 0;
    if (infoPtr->uNumTools == 0)
	return 0;

    nTool = TOOLTIPS_GetToolFromInfoW (infoPtr, lpToolInfo);

    TOOLTIPS_DelToolCommon (hwnd, infoPtr, nTool);

    return 0;
}


static LRESULT
TOOLTIPS_EnumToolsA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    UINT uIndex = (UINT)wParam;
    LPTTTOOLINFOA lpToolInfo = (LPTTTOOLINFOA)lParam;
    TTTOOL_INFO *toolPtr;

    if (lpToolInfo == NULL)
	return FALSE;
    if (lpToolInfo->cbSize < TTTOOLINFOA_V1_SIZE)
	return FALSE;
    if (uIndex >= infoPtr->uNumTools)
	return FALSE;

    TRACE("index=%u\n", uIndex);

    toolPtr = &infoPtr->tools[uIndex];

    /* copy tool data */
    lpToolInfo->uFlags   = toolPtr->uFlags;
    lpToolInfo->hwnd     = toolPtr->hwnd;
    lpToolInfo->uId      = toolPtr->uId;
    lpToolInfo->rect     = toolPtr->rect;
    lpToolInfo->hinst    = toolPtr->hinst;
/*    lpToolInfo->lpszText = toolPtr->lpszText; */
    lpToolInfo->lpszText = NULL;  /* FIXME */

    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOA))
	lpToolInfo->lParam = toolPtr->lParam;

    return TRUE;
}


static LRESULT
TOOLTIPS_EnumToolsW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    UINT uIndex = (UINT)wParam;
    LPTTTOOLINFOW lpToolInfo = (LPTTTOOLINFOW)lParam;
    TTTOOL_INFO *toolPtr;

    if (lpToolInfo == NULL)
	return FALSE;
    if (lpToolInfo->cbSize < TTTOOLINFOW_V1_SIZE)
	return FALSE;
    if (uIndex >= infoPtr->uNumTools)
	return FALSE;

    TRACE("index=%u\n", uIndex);

    toolPtr = &infoPtr->tools[uIndex];

    /* copy tool data */
    lpToolInfo->uFlags   = toolPtr->uFlags;
    lpToolInfo->hwnd     = toolPtr->hwnd;
    lpToolInfo->uId      = toolPtr->uId;
    lpToolInfo->rect     = toolPtr->rect;
    lpToolInfo->hinst    = toolPtr->hinst;
/*    lpToolInfo->lpszText = toolPtr->lpszText; */
    lpToolInfo->lpszText = NULL;  /* FIXME */

    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOW))
	lpToolInfo->lParam = toolPtr->lParam;

    return TRUE;
}

static LRESULT
TOOLTIPS_GetBubbleSize (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOW lpToolInfo = (LPTTTOOLINFOW)lParam;
    INT nTool;
    SIZE size;

    if (lpToolInfo == NULL)
	return FALSE;
    if (lpToolInfo->cbSize < TTTOOLINFOW_V1_SIZE)
	return FALSE;

    nTool = TOOLTIPS_GetToolFromInfoW (infoPtr, lpToolInfo);
    if (nTool == -1) return 0;

    TRACE("tool %d\n", nTool);

    TOOLTIPS_CalcTipSize (hwnd, infoPtr, &size);
    TRACE("size %ld x %ld\n", size.cx, size.cy);

    return MAKELRESULT(size.cx, size.cy);
}

static LRESULT
TOOLTIPS_GetCurrentToolA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOA lpToolInfo = (LPTTTOOLINFOA)lParam;
    TTTOOL_INFO *toolPtr;

    if (lpToolInfo == NULL)
	return FALSE;
    if (lpToolInfo->cbSize < TTTOOLINFOA_V1_SIZE)
	return FALSE;

    if (lpToolInfo) {
	if (infoPtr->nCurrentTool > -1) {
	    toolPtr = &infoPtr->tools[infoPtr->nCurrentTool];

	    /* copy tool data */
	    lpToolInfo->uFlags   = toolPtr->uFlags;
	    lpToolInfo->rect     = toolPtr->rect;
	    lpToolInfo->hinst    = toolPtr->hinst;
/*	    lpToolInfo->lpszText = toolPtr->lpszText; */
	    lpToolInfo->lpszText = NULL;  /* FIXME */

	    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOA))
		lpToolInfo->lParam = toolPtr->lParam;

	    return TRUE;
	}
	else
	    return FALSE;
    }
    else
	return (infoPtr->nCurrentTool != -1);

    return FALSE;
}


static LRESULT
TOOLTIPS_GetCurrentToolW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOW lpToolInfo = (LPTTTOOLINFOW)lParam;
    TTTOOL_INFO *toolPtr;

    if (lpToolInfo == NULL)
	return FALSE;
    if (lpToolInfo->cbSize < TTTOOLINFOW_V1_SIZE)
	return FALSE;

    if (lpToolInfo) {
	if (infoPtr->nCurrentTool > -1) {
	    toolPtr = &infoPtr->tools[infoPtr->nCurrentTool];

	    /* copy tool data */
	    lpToolInfo->uFlags   = toolPtr->uFlags;
	    lpToolInfo->rect     = toolPtr->rect;
	    lpToolInfo->hinst    = toolPtr->hinst;
/*	    lpToolInfo->lpszText = toolPtr->lpszText; */
	    lpToolInfo->lpszText = NULL;  /* FIXME */

	    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOW))
		lpToolInfo->lParam = toolPtr->lParam;

	    return TRUE;
	}
	else
	    return FALSE;
    }
    else
	return (infoPtr->nCurrentTool != -1);

    return FALSE;
}


static LRESULT
TOOLTIPS_GetDelayTime (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    switch (wParam) {
    case TTDT_RESHOW:
        return infoPtr->nReshowTime;

    case TTDT_AUTOPOP:
        return infoPtr->nAutoPopTime;

    case TTDT_INITIAL:
    case TTDT_AUTOMATIC: /* Apparently TTDT_AUTOMATIC returns TTDT_INITIAL */
        return infoPtr->nInitialTime;

    default:
        WARN("Invalid wParam %x\n", wParam);
	break;
    }

    return -1;
}


static LRESULT
TOOLTIPS_GetMargin (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPRECT lpRect = (LPRECT)lParam;

    lpRect->left   = infoPtr->rcMargin.left;
    lpRect->right  = infoPtr->rcMargin.right;
    lpRect->bottom = infoPtr->rcMargin.bottom;
    lpRect->top    = infoPtr->rcMargin.top;

    return 0;
}


inline static LRESULT
TOOLTIPS_GetMaxTipWidth (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    return infoPtr->nMaxTipWidth;
}


static LRESULT
TOOLTIPS_GetTextA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOA lpToolInfo = (LPTTTOOLINFOA)lParam;
    INT nTool;

    if (lpToolInfo == NULL)
	return 0;
    if (lpToolInfo->cbSize < TTTOOLINFOA_V1_SIZE)
	return 0;

    nTool = TOOLTIPS_GetToolFromInfoA (infoPtr, lpToolInfo);
    if (nTool == -1) return 0;

    /* NB this API is broken, there is no way for the app to determine
       what size buffer it requires nor a way to specify how long the
       one it supplies is.  We'll assume it's upto INFOTIPSIZE */

    WideCharToMultiByte(CP_ACP, 0, infoPtr->tools[nTool].lpszText, -1,
			lpToolInfo->lpszText, INFOTIPSIZE, NULL, NULL);

    return 0;
}


static LRESULT
TOOLTIPS_GetTextW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOW lpToolInfo = (LPTTTOOLINFOW)lParam;
    INT nTool;

    if (lpToolInfo == NULL)
	return 0;
    if (lpToolInfo->cbSize < TTTOOLINFOW_V1_SIZE)
	return 0;

    nTool = TOOLTIPS_GetToolFromInfoW (infoPtr, lpToolInfo);
    if (nTool == -1) return 0;

    strcpyW (lpToolInfo->lpszText, infoPtr->tools[nTool].lpszText);

    return 0;
}


inline static LRESULT
TOOLTIPS_GetTipBkColor (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    return infoPtr->clrBk;
}


inline static LRESULT
TOOLTIPS_GetTipTextColor (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    return infoPtr->clrText;
}


inline static LRESULT
TOOLTIPS_GetToolCount (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    return infoPtr->uNumTools;
}


static LRESULT
TOOLTIPS_GetToolInfoA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOA lpToolInfo = (LPTTTOOLINFOA)lParam;
    TTTOOL_INFO *toolPtr;
    INT nTool;

    if (lpToolInfo == NULL)
	return FALSE;
    if (lpToolInfo->cbSize < TTTOOLINFOA_V1_SIZE)
	return FALSE;
    if (infoPtr->uNumTools == 0)
	return FALSE;

    nTool = TOOLTIPS_GetToolFromInfoA (infoPtr, lpToolInfo);
    if (nTool == -1)
	return FALSE;

    TRACE("tool %d\n", nTool);

    toolPtr = &infoPtr->tools[nTool];

    /* copy tool data */
    lpToolInfo->uFlags   = toolPtr->uFlags;
    lpToolInfo->rect     = toolPtr->rect;
    lpToolInfo->hinst    = toolPtr->hinst;
/*    lpToolInfo->lpszText = toolPtr->lpszText; */
    lpToolInfo->lpszText = NULL;  /* FIXME */

    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOA))
	lpToolInfo->lParam = toolPtr->lParam;

    return TRUE;
}


static LRESULT
TOOLTIPS_GetToolInfoW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOW lpToolInfo = (LPTTTOOLINFOW)lParam;
    TTTOOL_INFO *toolPtr;
    INT nTool;

    if (lpToolInfo == NULL)
	return FALSE;
    if (lpToolInfo->cbSize < TTTOOLINFOW_V1_SIZE)
	return FALSE;
    if (infoPtr->uNumTools == 0)
	return FALSE;

    nTool = TOOLTIPS_GetToolFromInfoW (infoPtr, lpToolInfo);
    if (nTool == -1)
	return FALSE;

    TRACE("tool %d\n", nTool);

    toolPtr = &infoPtr->tools[nTool];

    /* copy tool data */
    lpToolInfo->uFlags   = toolPtr->uFlags;
    lpToolInfo->rect     = toolPtr->rect;
    lpToolInfo->hinst    = toolPtr->hinst;
/*    lpToolInfo->lpszText = toolPtr->lpszText; */
    lpToolInfo->lpszText = NULL;  /* FIXME */

    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOW))
	lpToolInfo->lParam = toolPtr->lParam;

    return TRUE;
}


static LRESULT
TOOLTIPS_HitTestA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTHITTESTINFOA lptthit = (LPTTHITTESTINFOA)lParam;
    TTTOOL_INFO *toolPtr;
    INT nTool;

    if (lptthit == 0)
	return FALSE;

    nTool = TOOLTIPS_GetToolFromPoint (infoPtr, lptthit->hwnd, &lptthit->pt);
    if (nTool == -1)
	return FALSE;

    TRACE("tool %d!\n", nTool);

    /* copy tool data */
    if (lptthit->ti.cbSize >= sizeof(TTTOOLINFOA)) {
	toolPtr = &infoPtr->tools[nTool];

	lptthit->ti.uFlags   = toolPtr->uFlags;
	lptthit->ti.hwnd     = toolPtr->hwnd;
	lptthit->ti.uId      = toolPtr->uId;
	lptthit->ti.rect     = toolPtr->rect;
	lptthit->ti.hinst    = toolPtr->hinst;
/*	lptthit->ti.lpszText = toolPtr->lpszText; */
	lptthit->ti.lpszText = NULL;  /* FIXME */
	lptthit->ti.lParam   = toolPtr->lParam;
    }

    return TRUE;
}


static LRESULT
TOOLTIPS_HitTestW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTHITTESTINFOW lptthit = (LPTTHITTESTINFOW)lParam;
    TTTOOL_INFO *toolPtr;
    INT nTool;

    if (lptthit == 0)
	return FALSE;

    nTool = TOOLTIPS_GetToolFromPoint (infoPtr, lptthit->hwnd, &lptthit->pt);
    if (nTool == -1)
	return FALSE;

    TRACE("tool %d!\n", nTool);

    /* copy tool data */
    if (lptthit->ti.cbSize >= sizeof(TTTOOLINFOW)) {
	toolPtr = &infoPtr->tools[nTool];

	lptthit->ti.uFlags   = toolPtr->uFlags;
	lptthit->ti.hwnd     = toolPtr->hwnd;
	lptthit->ti.uId      = toolPtr->uId;
	lptthit->ti.rect     = toolPtr->rect;
	lptthit->ti.hinst    = toolPtr->hinst;
/*	lptthit->ti.lpszText = toolPtr->lpszText; */
	lptthit->ti.lpszText = NULL;  /* FIXME */
	lptthit->ti.lParam   = toolPtr->lParam;
    }

    return TRUE;
}


static LRESULT
TOOLTIPS_NewToolRectA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOA lpti = (LPTTTOOLINFOA)lParam;
    INT nTool;

    if (lpti == NULL)
	return 0;
    if (lpti->cbSize < TTTOOLINFOA_V1_SIZE)
	return FALSE;

    nTool = TOOLTIPS_GetToolFromInfoA (infoPtr, lpti);

    TRACE("nTool = %d, rect = %s\n", nTool, wine_dbgstr_rect(&lpti->rect));

    if (nTool == -1) return 0;

    infoPtr->tools[nTool].rect = lpti->rect;

    return 0;
}


static LRESULT
TOOLTIPS_NewToolRectW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOW lpti = (LPTTTOOLINFOW)lParam;
    INT nTool;

    if (lpti == NULL)
	return 0;
    if (lpti->cbSize < TTTOOLINFOW_V1_SIZE)
	return FALSE;

    nTool = TOOLTIPS_GetToolFromInfoW (infoPtr, lpti);

    TRACE("nTool = %d, rect = %s\n", nTool, wine_dbgstr_rect(&lpti->rect));

    if (nTool == -1) return 0;

    infoPtr->tools[nTool].rect = lpti->rect;

    return 0;
}


inline static LRESULT
TOOLTIPS_Pop (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    TOOLTIPS_Hide (hwnd, infoPtr);

    return 0;
}


static LRESULT
TOOLTIPS_RelayEvent (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPMSG lpMsg = (LPMSG)lParam;
    POINT pt;
    INT nOldTool;

    if (lParam == 0) {
	ERR("lpMsg == NULL!\n");
	return 0;
    }

    switch (lpMsg->message) {
	case WM_LBUTTONDOWN:
	case WM_LBUTTONUP:
	case WM_MBUTTONDOWN:
	case WM_MBUTTONUP:
	case WM_RBUTTONDOWN:
	case WM_RBUTTONUP:
	    TOOLTIPS_Hide (hwnd, infoPtr);
	    break;

	case WM_MOUSEMOVE:
	    pt.x = LOWORD(lpMsg->lParam);
	    pt.y = HIWORD(lpMsg->lParam);
	    nOldTool = infoPtr->nTool;
	    infoPtr->nTool = TOOLTIPS_GetToolFromPoint(infoPtr, lpMsg->hwnd,
						       &pt);
	    TRACE("tool (%p) %d %d %d\n", hwnd, nOldTool,
		  infoPtr->nTool, infoPtr->nCurrentTool);
	    TRACE("WM_MOUSEMOVE (%p %ld %ld)\n", hwnd, pt.x, pt.y);

	    if (infoPtr->nTool != nOldTool) {
	        if(infoPtr->nTool == -1) { /* Moved out of all tools */
		    TOOLTIPS_Hide(hwnd, infoPtr);
		    KillTimer(hwnd, ID_TIMERLEAVE);
		} else if (nOldTool == -1) { /* Moved from outside */
		    if(infoPtr->bActive) {
		        SetTimer(hwnd, ID_TIMERSHOW, infoPtr->nInitialTime, 0);
			TRACE("timer 1 started!\n");
		    }
		} else { /* Moved from one to another */
		    TOOLTIPS_Hide (hwnd, infoPtr);
		    KillTimer(hwnd, ID_TIMERLEAVE);
		    if(infoPtr->bActive) {
		        SetTimer (hwnd, ID_TIMERSHOW, infoPtr->nReshowTime, 0);
			TRACE("timer 1 started!\n");
		    }
		}
	    } else if(infoPtr->nCurrentTool != -1) { /* restart autopop */
	        KillTimer(hwnd, ID_TIMERPOP);
		SetTimer(hwnd, ID_TIMERPOP, infoPtr->nAutoPopTime, 0);
		TRACE("timer 2 restarted\n");
	    }
	    break;
    }

    return 0;
}


static LRESULT
TOOLTIPS_SetDelayTime (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    INT nTime = (INT)LOWORD(lParam);

    switch (wParam) {
    case TTDT_AUTOMATIC:
        if (nTime <= 0)
	    nTime = GetDoubleClickTime();
	infoPtr->nReshowTime    = nTime / 5;
	infoPtr->nAutoPopTime   = nTime * 10;
	infoPtr->nInitialTime   = nTime;
	break;

    case TTDT_RESHOW:
        if(nTime < 0)
	    nTime = GetDoubleClickTime() / 5;
	infoPtr->nReshowTime = nTime;
	break;

    case TTDT_AUTOPOP:
        if(nTime < 0)
	    nTime = GetDoubleClickTime() * 10;
	infoPtr->nAutoPopTime = nTime;
	break;

    case TTDT_INITIAL:
        if(nTime < 0)
	    nTime = GetDoubleClickTime();
	infoPtr->nInitialTime = nTime;
	    break;

    default:
        WARN("Invalid wParam %x\n", wParam);
	break;
    }

    return 0;
}


static LRESULT
TOOLTIPS_SetMargin (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPRECT lpRect = (LPRECT)lParam;

    infoPtr->rcMargin.left   = lpRect->left;
    infoPtr->rcMargin.right  = lpRect->right;
    infoPtr->rcMargin.bottom = lpRect->bottom;
    infoPtr->rcMargin.top    = lpRect->top;

    return 0;
}


inline static LRESULT
TOOLTIPS_SetMaxTipWidth (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    INT nTemp = infoPtr->nMaxTipWidth;

    infoPtr->nMaxTipWidth = (INT)lParam;

    return nTemp;
}


inline static LRESULT
TOOLTIPS_SetTipBkColor (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    infoPtr->clrBk = (COLORREF)wParam;

    return 0;
}


inline static LRESULT
TOOLTIPS_SetTipTextColor (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    infoPtr->clrText = (COLORREF)wParam;

    return 0;
}


static LRESULT
TOOLTIPS_SetToolInfoA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOA lpToolInfo = (LPTTTOOLINFOA)lParam;
    TTTOOL_INFO *toolPtr;
    INT nTool;

    if (lpToolInfo == NULL)
	return 0;
    if (lpToolInfo->cbSize < TTTOOLINFOA_V1_SIZE)
	return 0;

    nTool = TOOLTIPS_GetToolFromInfoA (infoPtr, lpToolInfo);
    if (nTool == -1) return 0;

    TRACE("tool %d\n", nTool);

    toolPtr = &infoPtr->tools[nTool];

    /* copy tool data */
    toolPtr->uFlags = lpToolInfo->uFlags;
    toolPtr->hwnd   = lpToolInfo->hwnd;
    toolPtr->uId    = lpToolInfo->uId;
    toolPtr->rect   = lpToolInfo->rect;
    toolPtr->hinst  = lpToolInfo->hinst;

    if (HIWORD(lpToolInfo->lpszText) == 0) {
	TRACE("set string id %x!\n", (INT)lpToolInfo->lpszText);
	toolPtr->lpszText = (LPWSTR)lpToolInfo->lpszText;
    }
    else if (lpToolInfo->lpszText) {
	if (lpToolInfo->lpszText == LPSTR_TEXTCALLBACKA)
	    toolPtr->lpszText = LPSTR_TEXTCALLBACKW;
	else {
	    if ( (toolPtr->lpszText) &&
		 (HIWORD((INT)toolPtr->lpszText) != 0) ) {
		Free (toolPtr->lpszText);
		toolPtr->lpszText = NULL;
	    }
	    if (lpToolInfo->lpszText) {
		INT len = MultiByteToWideChar(CP_ACP, 0, lpToolInfo->lpszText,
					      -1, NULL, 0);
		toolPtr->lpszText = Alloc (len * sizeof(WCHAR));
		MultiByteToWideChar(CP_ACP, 0, lpToolInfo->lpszText, -1,
				    toolPtr->lpszText, len);
	    }
	}
    }

    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOA))
	toolPtr->lParam = lpToolInfo->lParam;

    return 0;
}


static LRESULT
TOOLTIPS_SetToolInfoW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOW lpToolInfo = (LPTTTOOLINFOW)lParam;
    TTTOOL_INFO *toolPtr;
    INT nTool;

    if (lpToolInfo == NULL)
	return 0;
    if (lpToolInfo->cbSize < TTTOOLINFOW_V1_SIZE)
	return 0;

    nTool = TOOLTIPS_GetToolFromInfoW (infoPtr, lpToolInfo);
    if (nTool == -1) return 0;

    TRACE("tool %d\n", nTool);

    toolPtr = &infoPtr->tools[nTool];

    /* copy tool data */
    toolPtr->uFlags = lpToolInfo->uFlags;
    toolPtr->hwnd   = lpToolInfo->hwnd;
    toolPtr->uId    = lpToolInfo->uId;
    toolPtr->rect   = lpToolInfo->rect;
    toolPtr->hinst  = lpToolInfo->hinst;

    if (HIWORD(lpToolInfo->lpszText) == 0) {
	TRACE("set string id %x!\n", (INT)lpToolInfo->lpszText);
	toolPtr->lpszText = lpToolInfo->lpszText;
    }
    else if (lpToolInfo->lpszText) {
	if (lpToolInfo->lpszText == LPSTR_TEXTCALLBACKW)
	    toolPtr->lpszText = LPSTR_TEXTCALLBACKW;
	else {
	    if ( (toolPtr->lpszText) &&
		 (HIWORD((INT)toolPtr->lpszText) != 0) ) {
		Free (toolPtr->lpszText);
		toolPtr->lpszText = NULL;
	    }
	    if (lpToolInfo->lpszText) {
		INT len = lstrlenW (lpToolInfo->lpszText);
		toolPtr->lpszText = Alloc ((len+1)*sizeof(WCHAR));
		strcpyW (toolPtr->lpszText, lpToolInfo->lpszText);
	    }
	}
    }

    if (lpToolInfo->cbSize >= sizeof(TTTOOLINFOW))
	toolPtr->lParam = lpToolInfo->lParam;

    return 0;
}


static LRESULT
TOOLTIPS_TrackActivate (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    if ((BOOL)wParam) {
	LPTTTOOLINFOA lpToolInfo = (LPTTTOOLINFOA)lParam;

	if (lpToolInfo == NULL)
	    return 0;
	if (lpToolInfo->cbSize < TTTOOLINFOA_V1_SIZE)
	    return FALSE;

	/* activate */
	infoPtr->nTrackTool = TOOLTIPS_GetToolFromInfoA (infoPtr, lpToolInfo);
	if (infoPtr->nTrackTool != -1) {
	    TRACE("activated!\n");
	    infoPtr->bTrackActive = TRUE;
	    TOOLTIPS_TrackShow (hwnd, infoPtr);
	}
    }
    else {
	/* deactivate */
	TOOLTIPS_TrackHide (hwnd, infoPtr);

	infoPtr->bTrackActive = FALSE;
	infoPtr->nTrackTool = -1;

	TRACE("deactivated!\n");
    }

    return 0;
}


static LRESULT
TOOLTIPS_TrackPosition (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    infoPtr->xTrackPos = (INT)LOWORD(lParam);
    infoPtr->yTrackPos = (INT)HIWORD(lParam);

    if (infoPtr->bTrackActive) {
	TRACE("[%d %d]\n",
	       infoPtr->xTrackPos, infoPtr->yTrackPos);

	TOOLTIPS_TrackShow (hwnd, infoPtr);
    }

    return 0;
}


static LRESULT
TOOLTIPS_Update (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    if (infoPtr->nCurrentTool != -1)
	UpdateWindow (hwnd);

    return 0;
}


static LRESULT
TOOLTIPS_UpdateTipTextA (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOA lpToolInfo = (LPTTTOOLINFOA)lParam;
    TTTOOL_INFO *toolPtr;
    INT nTool;

    if (lpToolInfo == NULL)
	return 0;
    if (lpToolInfo->cbSize < TTTOOLINFOA_V1_SIZE)
	return FALSE;

    nTool = TOOLTIPS_GetToolFromInfoA (infoPtr, lpToolInfo);
    if (nTool == -1) return 0;

    TRACE("tool %d\n", nTool);

    toolPtr = &infoPtr->tools[nTool];

    /* copy tool text */
    toolPtr->hinst  = lpToolInfo->hinst;

    if (HIWORD(lpToolInfo->lpszText) == 0){
	toolPtr->lpszText = (LPWSTR)lpToolInfo->lpszText;
    }
    else if (lpToolInfo->lpszText) {
	if (lpToolInfo->lpszText == LPSTR_TEXTCALLBACKA)
	    toolPtr->lpszText = LPSTR_TEXTCALLBACKW;
	else {
	    if ( (toolPtr->lpszText) &&
		 (HIWORD((INT)toolPtr->lpszText) != 0) ) {
		Free (toolPtr->lpszText);
		toolPtr->lpszText = NULL;
	    }
	    if (lpToolInfo->lpszText) {
		INT len = MultiByteToWideChar(CP_ACP, 0, lpToolInfo->lpszText,
					      -1, NULL, 0);
		toolPtr->lpszText = Alloc (len * sizeof(WCHAR));
		MultiByteToWideChar(CP_ACP, 0, lpToolInfo->lpszText, -1,
				    toolPtr->lpszText, len);
	    }
	}
    }

    if(infoPtr->nCurrentTool == -1) return 0;
    /* force repaint */
    if (infoPtr->bActive)
	TOOLTIPS_Show (hwnd, infoPtr);
    else if (infoPtr->bTrackActive)
	TOOLTIPS_TrackShow (hwnd, infoPtr);

    return 0;
}


static LRESULT
TOOLTIPS_UpdateTipTextW (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LPTTTOOLINFOW lpToolInfo = (LPTTTOOLINFOW)lParam;
    TTTOOL_INFO *toolPtr;
    INT nTool;

    if (lpToolInfo == NULL)
	return 0;
    if (lpToolInfo->cbSize < TTTOOLINFOW_V1_SIZE)
	return FALSE;

    nTool = TOOLTIPS_GetToolFromInfoW (infoPtr, lpToolInfo);
    if (nTool == -1)
	return 0;

    TRACE("tool %d\n", nTool);

    toolPtr = &infoPtr->tools[nTool];

    /* copy tool text */
    toolPtr->hinst  = lpToolInfo->hinst;

    if (HIWORD(lpToolInfo->lpszText) == 0){
	toolPtr->lpszText = lpToolInfo->lpszText;
    }
    else if (lpToolInfo->lpszText) {
	if (lpToolInfo->lpszText == LPSTR_TEXTCALLBACKW)
	    toolPtr->lpszText = LPSTR_TEXTCALLBACKW;
	else {
	    if ( (toolPtr->lpszText)  &&
		 (HIWORD((INT)toolPtr->lpszText) != 0) ) {
		Free (toolPtr->lpszText);
		toolPtr->lpszText = NULL;
	    }
	    if (lpToolInfo->lpszText) {
		INT len = lstrlenW (lpToolInfo->lpszText);
		toolPtr->lpszText = Alloc ((len+1)*sizeof(WCHAR));
		strcpyW (toolPtr->lpszText, lpToolInfo->lpszText);
	    }
	}
    }

    if(infoPtr->nCurrentTool == -1) return 0;
    /* force repaint */
    if (infoPtr->bActive)
	TOOLTIPS_Show (hwnd, infoPtr);
    else if (infoPtr->bTrackActive)
	TOOLTIPS_TrackShow (hwnd, infoPtr);

    return 0;
}


static LRESULT
TOOLTIPS_WindowFromPoint (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    return (LRESULT)WindowFromPoint (*((LPPOINT)lParam));
}


static LRESULT
TOOLTIPS_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
{
    TOOLTIPS_INFO *infoPtr;
    NONCLIENTMETRICSA nclm;

    /* allocate memory for info structure */
    infoPtr = (TOOLTIPS_INFO *)Alloc (sizeof(TOOLTIPS_INFO));
    SetWindowLongA (hwnd, 0, (DWORD)infoPtr);

    /* initialize info structure */
    infoPtr->bActive = TRUE;
    infoPtr->bTrackActive = FALSE;
    infoPtr->clrBk   = GetSysColor (COLOR_INFOBK);
    infoPtr->clrText = GetSysColor (COLOR_INFOTEXT);

    nclm.cbSize = sizeof(NONCLIENTMETRICSA);
    SystemParametersInfoA (SPI_GETNONCLIENTMETRICS, 0, &nclm, 0);
    infoPtr->hFont = CreateFontIndirectA (&nclm.lfStatusFont);

    infoPtr->nMaxTipWidth = -1;
    infoPtr->nTool = -1;
    infoPtr->nCurrentTool = -1;
    infoPtr->nTrackTool = -1;

    TOOLTIPS_SetDelayTime(hwnd, TTDT_AUTOMATIC, 0L);

    SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOZORDER | SWP_HIDEWINDOW | SWP_NOACTIVATE);

    return 0;
}


static LRESULT
TOOLTIPS_Destroy (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    TTTOOL_INFO *toolPtr;
    INT i;

    /* free tools */
    if (infoPtr->tools) {
	for (i = 0; i < infoPtr->uNumTools; i++) {
	    toolPtr = &infoPtr->tools[i];
	    if (toolPtr->lpszText) {
		if ( (toolPtr->lpszText != LPSTR_TEXTCALLBACKW) &&
		     (HIWORD((INT)toolPtr->lpszText) != 0) )
		{
		    Free (toolPtr->lpszText);
		    toolPtr->lpszText = NULL;
		}
	    }

	    /* remove subclassing */
        if (toolPtr->uFlags & TTF_SUBCLASS) {
            if (toolPtr->uFlags & TTF_IDISHWND) {
                RemoveWindowSubclass((HWND)toolPtr->uId, TOOLTIPS_SubclassProc, 1);
            }
            else {
                RemoveWindowSubclass(toolPtr->hwnd, TOOLTIPS_SubclassProc, 1);
            }
        }
    }
	Free (infoPtr->tools);
    }

    /* delete font */
    DeleteObject (infoPtr->hFont);

    /* free tool tips info data */
    Free (infoPtr);
    SetWindowLongA(hwnd, 0, 0);
    return 0;
}


static LRESULT
TOOLTIPS_EraseBackground (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    RECT rect;
    HBRUSH hBrush;

    hBrush = CreateSolidBrush (infoPtr->clrBk);
    GetClientRect (hwnd, &rect);
    FillRect ((HDC)wParam, &rect, hBrush);
    DeleteObject (hBrush);

    return FALSE;
}


static LRESULT
TOOLTIPS_GetFont (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    return (LRESULT)infoPtr->hFont;
}


static LRESULT
TOOLTIPS_MouseMessage (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    TOOLTIPS_Hide (hwnd, infoPtr);

    return 0;
}


static LRESULT
TOOLTIPS_NCCreate (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    DWORD dwStyle = GetWindowLongA (hwnd, GWL_STYLE);
    DWORD dwExStyle = GetWindowLongA (hwnd, GWL_EXSTYLE);

    dwStyle &= 0x0000FFFF;
    dwStyle |= (WS_POPUP | WS_BORDER | WS_CLIPSIBLINGS);
    SetWindowLongA (hwnd, GWL_STYLE, dwStyle);

    dwExStyle |= WS_EX_TOOLWINDOW;
    SetWindowLongA (hwnd, GWL_EXSTYLE, dwExStyle);

    return TRUE;
}


static LRESULT
TOOLTIPS_NCHitTest (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    INT nTool = (infoPtr->bTrackActive) ? infoPtr->nTrackTool : infoPtr->nTool;

    TRACE(" nTool=%d\n", nTool);

    if ((nTool > -1) && (nTool < infoPtr->uNumTools)) {
	if (infoPtr->tools[nTool].uFlags & TTF_TRANSPARENT) {
	    TRACE("-- in transparent mode!\n");
	    return HTTRANSPARENT;
	}
    }

    return DefWindowProcA (hwnd, WM_NCHITTEST, wParam, lParam);
}


static LRESULT
TOOLTIPS_NotifyFormat (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    FIXME ("hwnd=%p wParam=%x lParam=%lx\n", hwnd, wParam, lParam);

    return 0;
}


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

    hdc = (wParam == 0) ? BeginPaint (hwnd, &ps) : (HDC)wParam;
    TOOLTIPS_Refresh (hwnd, hdc);
    if (!wParam)
	EndPaint (hwnd, &ps);
    return 0;
}


static LRESULT
TOOLTIPS_SetFont (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    LOGFONTW lf;

    if(!GetObjectW((HFONT)wParam, sizeof(lf), &lf))
        return 0;

    if(infoPtr->hFont) DeleteObject (infoPtr->hFont);
    infoPtr->hFont = CreateFontIndirectW(&lf);

    if ((LOWORD(lParam)) & (infoPtr->nCurrentTool != -1)) {
	FIXME("full redraw needed!\n");
    }

    return 0;
}
/******************************************************************
 * TOOLTIPS_OnWMGetTextLength
 *
 * This function is called when the tooltip receive a
 * WM_GETTEXTLENGTH message.
 * wParam : not used
 * lParam : not used
 *
 * returns the length, in characters, of the tip text
 ******************************************************************/
static LRESULT
TOOLTIPS_OnWMGetTextLength(HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    return lstrlenW(infoPtr->szTipText);
}

/******************************************************************
 * TOOLTIPS_OnWMGetText
 *
 * This function is called when the tooltip receive a
 * WM_GETTEXT message.
 * wParam : specifies the maximum number of characters to be copied
 * lParam : is the pointer to the buffer that will receive
 *          the tip text
 *
 * returns the number of characters copied
 ******************************************************************/
static LRESULT
TOOLTIPS_OnWMGetText (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);

    if(!infoPtr || !(infoPtr->szTipText))
        return 0;

    return WideCharToMultiByte(CP_ACP, 0, infoPtr->szTipText, -1,
			       (LPSTR)lParam, wParam, NULL, NULL);
}

static LRESULT
TOOLTIPS_Timer (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    INT nOldTool;

    TRACE("timer %d (%p) expired!\n", wParam, hwnd);

    switch (wParam) {
    case ID_TIMERSHOW:
        KillTimer (hwnd, ID_TIMERSHOW);
	nOldTool = infoPtr->nTool;
	if ((infoPtr->nTool = TOOLTIPS_CheckTool (hwnd, TRUE)) == nOldTool)
	    TOOLTIPS_Show (hwnd, infoPtr);
	break;

    case ID_TIMERPOP:
        TOOLTIPS_Hide (hwnd, infoPtr);
	break;

    case ID_TIMERLEAVE:
        nOldTool = infoPtr->nTool;
	infoPtr->nTool = TOOLTIPS_CheckTool (hwnd, FALSE);
	TRACE("tool (%p) %d %d %d\n", hwnd, nOldTool,
	      infoPtr->nTool, infoPtr->nCurrentTool);
	if (infoPtr->nTool != nOldTool) {
	    if(infoPtr->nTool == -1) { /* Moved out of all tools */
	        TOOLTIPS_Hide(hwnd, infoPtr);
		KillTimer(hwnd, ID_TIMERLEAVE);
	    } else if (nOldTool == -1) { /* Moved from outside */
	        ERR("How did this happen?\n");
	    } else { /* Moved from one to another */
	        TOOLTIPS_Hide (hwnd, infoPtr);
		KillTimer(hwnd, ID_TIMERLEAVE);
		if(infoPtr->bActive) {
		    SetTimer (hwnd, ID_TIMERSHOW, infoPtr->nReshowTime, 0);
		    TRACE("timer 1 started!\n");
		}
	    }
	}
	break;

    default:
        ERR("Unknown timer id %d\n", wParam);
	break;
    }
    return 0;
}


static LRESULT
TOOLTIPS_WinIniChange (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    TOOLTIPS_INFO *infoPtr = TOOLTIPS_GetInfoPtr (hwnd);
    NONCLIENTMETRICSA nclm;

    infoPtr->clrBk   = GetSysColor (COLOR_INFOBK);
    infoPtr->clrText = GetSysColor (COLOR_INFOTEXT);

    DeleteObject (infoPtr->hFont);
    nclm.cbSize = sizeof(NONCLIENTMETRICSA);
    SystemParametersInfoA (SPI_GETNONCLIENTMETRICS, 0, &nclm, 0);
    infoPtr->hFont = CreateFontIndirectA (&nclm.lfStatusFont);

    return 0;
}


LRESULT CALLBACK
TOOLTIPS_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uID, DWORD_PTR dwRef)
{
    MSG msg;

    switch(uMsg) {
    case WM_MOUSEMOVE:
    case WM_LBUTTONDOWN:
    case WM_LBUTTONUP:
    case WM_MBUTTONDOWN:
    case WM_MBUTTONUP:
    case WM_RBUTTONDOWN:
    case WM_RBUTTONUP:
        msg.hwnd = hwnd;
	msg.message = uMsg;
	msg.wParam = wParam;
	msg.lParam = lParam;
	TOOLTIPS_RelayEvent((HWND)dwRef, 0, (LPARAM)&msg);
	break;

    default:
        break;
    }
    return DefSubclassProc(hwnd, uMsg, wParam, lParam);
}


static LRESULT CALLBACK
TOOLTIPS_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    TRACE("hwnd=%p msg=%x wparam=%x lParam=%lx\n", hwnd, uMsg, wParam, lParam);
    if (!TOOLTIPS_GetInfoPtr(hwnd) && (uMsg != WM_CREATE) && (uMsg != WM_NCCREATE))
        return DefWindowProcA (hwnd, uMsg, wParam, lParam);
    switch (uMsg)
    {
	case TTM_ACTIVATE:
	    return TOOLTIPS_Activate (hwnd, wParam, lParam);

	case TTM_ADDTOOLA:
	    return TOOLTIPS_AddToolA (hwnd, wParam, lParam);

	case TTM_ADDTOOLW:
	    return TOOLTIPS_AddToolW (hwnd, wParam, lParam);

	case TTM_DELTOOLA:
	    return TOOLTIPS_DelToolA (hwnd, wParam, lParam);

	case TTM_DELTOOLW:
	    return TOOLTIPS_DelToolW (hwnd, wParam, lParam);

	case TTM_ENUMTOOLSA:
	    return TOOLTIPS_EnumToolsA (hwnd, wParam, lParam);

	case TTM_ENUMTOOLSW:
	    return TOOLTIPS_EnumToolsW (hwnd, wParam, lParam);

	case TTM_GETBUBBLESIZE:
	    return TOOLTIPS_GetBubbleSize (hwnd, wParam, lParam);

	case TTM_GETCURRENTTOOLA:
	    return TOOLTIPS_GetCurrentToolA (hwnd, wParam, lParam);

	case TTM_GETCURRENTTOOLW:
	    return TOOLTIPS_GetCurrentToolW (hwnd, wParam, lParam);

	case TTM_GETDELAYTIME:
	    return TOOLTIPS_GetDelayTime (hwnd, wParam, lParam);

	case TTM_GETMARGIN:
	    return TOOLTIPS_GetMargin (hwnd, wParam, lParam);

	case TTM_GETMAXTIPWIDTH:
	    return TOOLTIPS_GetMaxTipWidth (hwnd, wParam, lParam);

	case TTM_GETTEXTA:
	    return TOOLTIPS_GetTextA (hwnd, wParam, lParam);

	case TTM_GETTEXTW:
	    return TOOLTIPS_GetTextW (hwnd, wParam, lParam);

	case TTM_GETTIPBKCOLOR:
	    return TOOLTIPS_GetTipBkColor (hwnd, wParam, lParam);

	case TTM_GETTIPTEXTCOLOR:
	    return TOOLTIPS_GetTipTextColor (hwnd, wParam, lParam);

	case TTM_GETTOOLCOUNT:
	    return TOOLTIPS_GetToolCount (hwnd, wParam, lParam);

	case TTM_GETTOOLINFOA:
	    return TOOLTIPS_GetToolInfoA (hwnd, wParam, lParam);

	case TTM_GETTOOLINFOW:
	    return TOOLTIPS_GetToolInfoW (hwnd, wParam, lParam);

	case TTM_HITTESTA:
	    return TOOLTIPS_HitTestA (hwnd, wParam, lParam);

	case TTM_HITTESTW:
	    return TOOLTIPS_HitTestW (hwnd, wParam, lParam);

	case TTM_NEWTOOLRECTA:
	    return TOOLTIPS_NewToolRectA (hwnd, wParam, lParam);

	case TTM_NEWTOOLRECTW:
	    return TOOLTIPS_NewToolRectW (hwnd, wParam, lParam);

	case TTM_POP:
	    return TOOLTIPS_Pop (hwnd, wParam, lParam);

	case TTM_RELAYEVENT:
	    return TOOLTIPS_RelayEvent (hwnd, wParam, lParam);

	case TTM_SETDELAYTIME:
	    return TOOLTIPS_SetDelayTime (hwnd, wParam, lParam);

	case TTM_SETMARGIN:
	    return TOOLTIPS_SetMargin (hwnd, wParam, lParam);

	case TTM_SETMAXTIPWIDTH:
	    return TOOLTIPS_SetMaxTipWidth (hwnd, wParam, lParam);

	case TTM_SETTIPBKCOLOR:
	    return TOOLTIPS_SetTipBkColor (hwnd, wParam, lParam);

	case TTM_SETTIPTEXTCOLOR:
	    return TOOLTIPS_SetTipTextColor (hwnd, wParam, lParam);

	case TTM_SETTOOLINFOA:
	    return TOOLTIPS_SetToolInfoA (hwnd, wParam, lParam);

	case TTM_SETTOOLINFOW:
	    return TOOLTIPS_SetToolInfoW (hwnd, wParam, lParam);

	case TTM_TRACKACTIVATE:
	    return TOOLTIPS_TrackActivate (hwnd, wParam, lParam);

	case TTM_TRACKPOSITION:
	    return TOOLTIPS_TrackPosition (hwnd, wParam, lParam);

	case TTM_UPDATE:
	    return TOOLTIPS_Update (hwnd, wParam, lParam);

	case TTM_UPDATETIPTEXTA:
	    return TOOLTIPS_UpdateTipTextA (hwnd, wParam, lParam);

	case TTM_UPDATETIPTEXTW:
	    return TOOLTIPS_UpdateTipTextW (hwnd, wParam, lParam);

	case TTM_WINDOWFROMPOINT:
	    return TOOLTIPS_WindowFromPoint (hwnd, wParam, lParam);


	case WM_CREATE:
	    return TOOLTIPS_Create (hwnd, (LPCREATESTRUCTW)lParam);

	case WM_DESTROY:
	    return TOOLTIPS_Destroy (hwnd, wParam, lParam);

	case WM_ERASEBKGND:
	    return TOOLTIPS_EraseBackground (hwnd, wParam, lParam);

	case WM_GETFONT:
	    return TOOLTIPS_GetFont (hwnd, wParam, lParam);

        case WM_GETTEXT:
            return TOOLTIPS_OnWMGetText (hwnd, wParam, lParam);

        case WM_GETTEXTLENGTH:
            return TOOLTIPS_OnWMGetTextLength (hwnd, wParam, lParam);


	case WM_LBUTTONDOWN:
	case WM_LBUTTONUP:
	case WM_MBUTTONDOWN:
	case WM_MBUTTONUP:
	case WM_RBUTTONDOWN:
	case WM_RBUTTONUP:
	case WM_MOUSEMOVE:
	    return TOOLTIPS_MouseMessage (hwnd, uMsg, wParam, lParam);

	case WM_NCCREATE:
	    return TOOLTIPS_NCCreate (hwnd, wParam, lParam);

	case WM_NCHITTEST:
	    return TOOLTIPS_NCHitTest (hwnd, wParam, lParam);

	case WM_NOTIFYFORMAT:
	    return TOOLTIPS_NotifyFormat (hwnd, wParam, lParam);

	case WM_PAINT:
	    return TOOLTIPS_Paint (hwnd, wParam, lParam);

	case WM_SETFONT:
	    return TOOLTIPS_SetFont (hwnd, wParam, lParam);

	case WM_TIMER:
	    return TOOLTIPS_Timer (hwnd, wParam, lParam);

	case WM_WININICHANGE:
	    return TOOLTIPS_WinIniChange (hwnd, wParam, lParam);

	default:
	    if ((uMsg >= WM_USER) && (uMsg < WM_APP))
		ERR("unknown msg %04x wp=%08x lp=%08lx\n",
		     uMsg, wParam, lParam);
	    return DefWindowProcA (hwnd, uMsg, wParam, lParam);
    }
    return 0;
}


VOID
TOOLTIPS_Register (void)
{
    WNDCLASSA wndClass;

    ZeroMemory (&wndClass, sizeof(WNDCLASSA));
    wndClass.style         = CS_GLOBALCLASS | CS_DBLCLKS | CS_SAVEBITS;
    wndClass.lpfnWndProc   = (WNDPROC)TOOLTIPS_WindowProc;
    wndClass.cbClsExtra    = 0;
    wndClass.cbWndExtra    = sizeof(TOOLTIPS_INFO *);
    wndClass.hCursor       = LoadCursorA (0, (LPSTR)IDC_ARROW);
    wndClass.hbrBackground = 0;
    wndClass.lpszClassName = TOOLTIPS_CLASSA;

    RegisterClassA (&wndClass);
}


VOID
TOOLTIPS_Unregister (void)
{
    UnregisterClassA (TOOLTIPS_CLASSA, NULL);
}