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/*
* Window related functions
*
* Copyright 1993, 1994 Alexandre Julliard
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "options.h"
#include "class.h"
#include "win.h"
#include "user.h"
#include "dce.h"
#include "sysmetrics.h"
#include "cursoricon.h"
#include "event.h"
#include "nonclient.h"
#include "queue.h"
#include "winpos.h"
#include "color.h"
#include "shm_main_blk.h"
#include "dde_proc.h"
#include "callback.h"
#include "stddebug.h"
/* #define DEBUG_WIN */
/* #define DEBUG_MENU */
#include "debug.h"
/* Desktop window */
static WND *pWndDesktop = NULL;
static HWND hwndSysModal = 0;
static WORD wDragWidth = 4;
static WORD wDragHeight= 3;
extern HCURSOR CURSORICON_IconToCursor(HICON);
/***********************************************************************
* WIN_FindWndPtr
*
* Return a pointer to the WND structure corresponding to a HWND.
*/
WND * WIN_FindWndPtr( HWND hwnd )
{
WND * ptr;
if (!hwnd) return NULL;
ptr = (WND *) USER_HEAP_LIN_ADDR( hwnd );
if (ptr->dwMagic != WND_MAGIC) return NULL;
if (ptr->hwndSelf != hwnd)
{
fprintf( stderr, "Can't happen: hwnd %04x self pointer is %04x\n",
hwnd, ptr->hwndSelf );
return NULL;
}
return ptr;
}
/***********************************************************************
* WIN_DumpWindow
*
* Dump the content of a window structure to stderr.
*/
void WIN_DumpWindow( HWND hwnd )
{
CLASS *classPtr;
WND *ptr;
char className[80];
int i;
if (!(ptr = WIN_FindWndPtr( hwnd )))
{
fprintf( stderr, "%04x is not a window handle\n", hwnd );
return;
}
if (!GetClassName( hwnd, className, sizeof(className ) ))
strcpy( className, "#NULL#" );
fprintf( stderr, "Window %04x (%p):\n", hwnd, ptr );
fprintf( stderr,
"next=%p child=%p parent=%p owner=%p class=%04x '%s'\n"
"inst=%04x taskQ=%04x updRgn=%04x active=%04x hdce=%04x idmenu=%04x\n"
"style=%08lx exstyle=%08lx wndproc=%08lx text=%04x '%s'\n"
"client=%d,%d-%d,%d window=%d,%d-%d,%d iconpos=%d,%d maxpos=%d,%d\n"
"sysmenu=%04x flags=%04x props=%04x vscroll=%04x hscroll=%04x\n",
ptr->next, ptr->child, ptr->parent, ptr->owner,
ptr->hClass, className, ptr->hInstance, ptr->hmemTaskQ,
ptr->hrgnUpdate, ptr->hwndLastActive, ptr->hdce, ptr->wIDmenu,
ptr->dwStyle, ptr->dwExStyle, (DWORD)ptr->lpfnWndProc, ptr->hText,
ptr->hText ? (char*)USER_HEAP_LIN_ADDR(ptr->hText) : "",
ptr->rectClient.left, ptr->rectClient.top, ptr->rectClient.right,
ptr->rectClient.bottom, ptr->rectWindow.left, ptr->rectWindow.top,
ptr->rectWindow.right, ptr->rectWindow.bottom, ptr->ptIconPos.x,
ptr->ptIconPos.y, ptr->ptMaxPos.x, ptr->ptMaxPos.y, ptr->hSysMenu,
ptr->flags, ptr->hProp, ptr->hVScroll, ptr->hHScroll );
if ((classPtr = CLASS_FindClassPtr( ptr->hClass )) &&
classPtr->wc.cbWndExtra)
{
fprintf( stderr, "extra bytes:" );
for (i = 0; i < classPtr->wc.cbWndExtra; i++)
fprintf( stderr, " %02x", *((BYTE*)ptr->wExtra+i) );
fprintf( stderr, "\n" );
}
fprintf( stderr, "\n" );
}
/***********************************************************************
* WIN_WalkWindows
*
* Walk the windows tree and print each window on stderr.
*/
void WIN_WalkWindows( HWND hwnd, int indent )
{
WND *ptr;
CLASS *classPtr;
char className[80];
ptr = hwnd ? WIN_FindWndPtr( hwnd ) : pWndDesktop;
if (!ptr)
{
fprintf( stderr, "*** Invalid window handle\n" );
return;
}
if (!indent) /* first time around */
fprintf( stderr, "%-16.16s %-8.8s %-6.6s %-17.17s %-8.8s %s\n",
"hwnd", " wndPtr", "queue", "Class Name", " Style", " WndProc");
while (ptr)
{
fprintf(stderr, "%*s%04x%*s", indent, "", ptr->hwndSelf, 13-indent,"");
if (!(classPtr = CLASS_FindClassPtr( ptr->hClass ))) strcpy( className, "#NULL#" );
else GlobalGetAtomName( classPtr->atomName, className, sizeof(className) );
fprintf( stderr, "%08lx %-6.4x %-17.17s %08x %04x:%04x\n",
(DWORD)ptr, ptr->hmemTaskQ, className,
(unsigned) ptr->dwStyle,
HIWORD(ptr->lpfnWndProc),
LOWORD(ptr->lpfnWndProc));
if (ptr->child) WIN_WalkWindows( ptr->child->hwndSelf, indent+1 );
ptr = ptr->next;
}
}
/***********************************************************************
* WIN_GetXWindow
*
* Return the X window associated to a window.
*/
Window WIN_GetXWindow( HWND hwnd )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
while (wndPtr && !wndPtr->window) wndPtr = wndPtr->parent;
return wndPtr ? wndPtr->window : 0;
}
/***********************************************************************
* WIN_UnlinkWindow
*
* Remove a window from the siblings linked list.
*/
BOOL WIN_UnlinkWindow( HWND hwnd )
{
WND *wndPtr, **ppWnd;
if (!(wndPtr = WIN_FindWndPtr( hwnd )) || !wndPtr->parent) return FALSE;
ppWnd = &wndPtr->parent->child;
while (*ppWnd != wndPtr) ppWnd = &(*ppWnd)->next;
*ppWnd = wndPtr->next;
return TRUE;
}
/***********************************************************************
* WIN_LinkWindow
*
* Insert a window into the siblings linked list.
* The window is inserted after the specified window, which can also
* be specified as HWND_TOP or HWND_BOTTOM.
*/
BOOL WIN_LinkWindow( HWND hwnd, HWND hwndInsertAfter )
{
WND *wndPtr, **ppWnd;
if (!(wndPtr = WIN_FindWndPtr( hwnd )) || !wndPtr->parent) return FALSE;
if ((hwndInsertAfter == HWND_TOP) || (hwndInsertAfter == HWND_BOTTOM))
{
ppWnd = &wndPtr->parent->child; /* Point to first sibling hwnd */
if (hwndInsertAfter == HWND_BOTTOM) /* Find last sibling hwnd */
while (*ppWnd) ppWnd = &(*ppWnd)->next;
}
else /* Normal case */
{
WND * afterPtr = WIN_FindWndPtr( hwndInsertAfter );
if (!afterPtr) return FALSE;
ppWnd = &afterPtr->next;
}
wndPtr->next = *ppWnd;
*ppWnd = wndPtr;
return TRUE;
}
/***********************************************************************
* WIN_FindWinToRepaint
*
* Find a window that needs repaint.
*/
HWND WIN_FindWinToRepaint( HWND hwnd )
{
WND * wndPtr;
/* Note: the desktop window never gets WM_PAINT messages */
wndPtr = hwnd ? WIN_FindWndPtr( hwnd ) : pWndDesktop->child;
for ( ; wndPtr; wndPtr = wndPtr->next)
{
dprintf_win( stddeb, "WIN_FindWinToRepaint: %04x, style %08lx\n",
wndPtr->hwndSelf, wndPtr->dwStyle );
if (!(wndPtr->dwStyle & WS_VISIBLE) || (wndPtr->flags & WIN_NO_REDRAW))
continue;
if ((wndPtr->dwStyle & WS_MINIMIZE) && (WIN_CLASS_INFO(wndPtr).hIcon))
continue;
if (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT))
return wndPtr->hwndSelf;
if (wndPtr->child)
{
HWND child;
if ((child = WIN_FindWinToRepaint( wndPtr->child->hwndSelf )))
return child;
}
}
return 0;
}
/***********************************************************************
* WIN_SendParentNotify
*
* Send a WM_PARENTNOTIFY to all ancestors of the given window, unless
* the window has the WS_EX_NOPARENTNOTIFY style.
*/
void WIN_SendParentNotify( HWND hwnd, WORD event, WORD idChild, LONG lValue )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
while (wndPtr && (wndPtr->dwStyle & WS_CHILD))
{
if (wndPtr->dwExStyle & WS_EX_NOPARENTNOTIFY) break;
wndPtr = wndPtr->parent;
#ifdef WINELIB32
SendMessage( wndPtr->hwndSelf, WM_PARENTNOTIFY,
MAKEWPARAM(event,idChild),
(LPARAM)lValue );
#else
SendMessage( wndPtr->hwndSelf, WM_PARENTNOTIFY, event,
MAKELPARAM(LOWORD(lValue), idChild) );
#endif
}
}
/***********************************************************************
* WIN_DestroyWindow
*
* Destroy storage associated to a window
*/
static void WIN_DestroyWindow( HWND hwnd )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
CLASS *classPtr = CLASS_FindClassPtr( wndPtr->hClass );
#ifdef CONFIG_IPC
if (main_block)
DDE_DestroyWindow(hwnd);
#endif /* CONFIG_IPC */
if (!wndPtr || !classPtr) return;
WIN_UnlinkWindow( hwnd ); /* Remove the window from the linked list */
wndPtr->dwMagic = 0; /* Mark it as invalid */
wndPtr->hwndSelf = 0;
if ((wndPtr->hrgnUpdate) || (wndPtr->flags & WIN_INTERNAL_PAINT))
{
if (wndPtr->hrgnUpdate) DeleteObject( wndPtr->hrgnUpdate );
QUEUE_DecPaintCount( wndPtr->hmemTaskQ );
}
if (!(wndPtr->dwStyle & WS_CHILD))
{
if (wndPtr->wIDmenu) DestroyMenu( (HMENU)wndPtr->wIDmenu );
}
if (wndPtr->hSysMenu) DestroyMenu( wndPtr->hSysMenu );
if (wndPtr->window) XDestroyWindow( display, wndPtr->window );
if (classPtr->wc.style & CS_OWNDC) DCE_FreeDCE( wndPtr->hdce );
classPtr->cWindows--;
USER_HEAP_FREE( hwnd );
}
/***********************************************************************
* WIN_CreateDesktopWindow
*
* Create the desktop window.
*/
BOOL WIN_CreateDesktopWindow(void)
{
HCLASS hclass;
CLASS *classPtr;
HDC hdc;
HWND hwndDesktop;
if (!(hclass = CLASS_FindClassByName( DESKTOP_CLASS_ATOM, 0, &classPtr )))
return FALSE;
hwndDesktop = USER_HEAP_ALLOC( sizeof(WND)+classPtr->wc.cbWndExtra );
if (!hwndDesktop) return FALSE;
pWndDesktop = (WND *) USER_HEAP_LIN_ADDR( hwndDesktop );
pWndDesktop->next = NULL;
pWndDesktop->child = NULL;
pWndDesktop->parent = NULL;
pWndDesktop->owner = NULL;
pWndDesktop->dwMagic = WND_MAGIC;
pWndDesktop->hwndSelf = hwndDesktop;
pWndDesktop->hClass = hclass;
pWndDesktop->hInstance = 0;
pWndDesktop->rectWindow.left = 0;
pWndDesktop->rectWindow.top = 0;
pWndDesktop->rectWindow.right = SYSMETRICS_CXSCREEN;
pWndDesktop->rectWindow.bottom = SYSMETRICS_CYSCREEN;
pWndDesktop->rectClient = pWndDesktop->rectWindow;
pWndDesktop->rectNormal = pWndDesktop->rectWindow;
pWndDesktop->ptIconPos.x = -1;
pWndDesktop->ptIconPos.y = -1;
pWndDesktop->ptMaxPos.x = -1;
pWndDesktop->ptMaxPos.y = -1;
pWndDesktop->hmemTaskQ = 0; /* Desktop does not belong to a task */
pWndDesktop->hrgnUpdate = 0;
pWndDesktop->hwndLastActive = hwndDesktop;
pWndDesktop->lpfnWndProc = classPtr->wc.lpfnWndProc;
pWndDesktop->dwStyle = WS_VISIBLE | WS_CLIPCHILDREN |
WS_CLIPSIBLINGS;
pWndDesktop->dwExStyle = 0;
pWndDesktop->hdce = 0;
pWndDesktop->hVScroll = 0;
pWndDesktop->hHScroll = 0;
pWndDesktop->wIDmenu = 0;
pWndDesktop->hText = 0;
pWndDesktop->flags = 0;
pWndDesktop->window = rootWindow;
pWndDesktop->hSysMenu = 0;
pWndDesktop->hProp = 0;
EVENT_RegisterWindow( pWndDesktop->window, hwndDesktop );
SendMessage( hwndDesktop, WM_NCCREATE, 0, 0 );
if ((hdc = GetDC( hwndDesktop )) != 0)
{
SendMessage( hwndDesktop, WM_ERASEBKGND, hdc, 0 );
ReleaseDC( hwndDesktop, hdc );
}
return TRUE;
}
/***********************************************************************
* CreateWindow (USER.41)
*/
HWND CreateWindow( SEGPTR className, SEGPTR windowName,
DWORD style, INT x, INT y, INT width, INT height,
HWND parent, HMENU menu, HANDLE instance, SEGPTR data )
{
return CreateWindowEx( 0, className, windowName, style,
x, y, width, height, parent, menu, instance, data );
}
/***********************************************************************
* CreateWindowEx (USER.452)
*/
HWND CreateWindowEx( DWORD exStyle, SEGPTR className, SEGPTR windowName,
DWORD style, INT x, INT y, INT width, INT height,
HWND parent, HMENU menu, HANDLE instance, SEGPTR data )
{
HANDLE class, hwnd;
CLASS *classPtr;
WND *wndPtr;
POINT maxSize, maxPos, minTrack, maxTrack;
CREATESTRUCT createStruct;
int wmcreate;
XSetWindowAttributes win_attr;
Atom XA_WM_DELETE_WINDOW;
/* FIXME: windowName and className should be SEGPTRs */
dprintf_win( stddeb, "CreateWindowEx: " );
if (HIWORD(windowName))
dprintf_win( stddeb, "'%s' ", (char *)PTR_SEG_TO_LIN(windowName) );
else
dprintf_win( stddeb, "%04x ", LOWORD(windowName) );
if (HIWORD(className))
dprintf_win( stddeb, "'%s' ", (char *)PTR_SEG_TO_LIN(className) );
else
dprintf_win( stddeb, "%04x ", LOWORD(className) );
dprintf_win(stddeb, "%08lx %08lx %d,%d %dx%d %04x %04x %04x %08lx\n",
exStyle, style, x, y, width, height,
parent, menu, instance, (DWORD)data);
if (x == CW_USEDEFAULT) x = y = 0;
if (width == CW_USEDEFAULT)
{
width = 600;
height = 400;
}
/* Find the parent and class */
if (parent)
{
/* Make sure parent is valid */
if (!IsWindow( parent )) {
dprintf_win(stddeb,"CreateWindowEx: Parent %04x is not a window\n", parent);
return 0;
}
}
else
{
if (style & WS_CHILD) {
dprintf_win(stddeb,"CreateWindowEx: no parent\n");
return 0; /* WS_CHILD needs a parent */
}
}
if (!(class = CLASS_FindClassByName( className, GetExePtr(instance),
&classPtr )))
{
fprintf(stderr,"CreateWindow BAD CLASSNAME " );
if (HIWORD(className)) fprintf( stderr, "'%s'\n",
(char *)PTR_SEG_TO_LIN(className) );
else fprintf( stderr, "%04x\n", LOWORD(className) );
return 0;
}
/* Correct the window style */
if (!(style & (WS_POPUP | WS_CHILD))) /* Overlapped window */
style |= WS_CAPTION | WS_CLIPSIBLINGS;
if (exStyle & WS_EX_DLGMODALFRAME) style &= ~WS_THICKFRAME;
/* Create the window structure */
hwnd = USER_HEAP_ALLOC( sizeof(WND)+classPtr->wc.cbWndExtra );
if (!hwnd) {
dprintf_win(stddeb,"CreateWindowEx: Out of memory\n");
return 0;
}
/* Fill the structure */
wndPtr = (WND *) USER_HEAP_LIN_ADDR( hwnd );
wndPtr->next = NULL;
wndPtr->child = NULL;
wndPtr->parent = (style & WS_CHILD) ? WIN_FindWndPtr( parent ) : pWndDesktop;
wndPtr->owner = (style & WS_CHILD) ? NULL : WIN_FindWndPtr(WIN_GetTopParent(parent));
wndPtr->window = 0;
wndPtr->dwMagic = WND_MAGIC;
wndPtr->hwndSelf = hwnd;
wndPtr->hClass = class;
wndPtr->hInstance = instance;
wndPtr->ptIconPos.x = -1;
wndPtr->ptIconPos.y = -1;
wndPtr->ptMaxPos.x = -1;
wndPtr->ptMaxPos.y = -1;
wndPtr->hmemTaskQ = GetTaskQueue(0);
wndPtr->hrgnUpdate = 0;
wndPtr->hwndLastActive = hwnd;
wndPtr->lpfnWndProc = classPtr->wc.lpfnWndProc;
wndPtr->dwStyle = style & ~WS_VISIBLE;
wndPtr->dwExStyle = exStyle;
wndPtr->wIDmenu = 0;
wndPtr->hText = 0;
wndPtr->flags = 0;
wndPtr->hVScroll = 0;
wndPtr->hHScroll = 0;
wndPtr->hSysMenu = 0;
wndPtr->hProp = 0;
if (classPtr->wc.cbWndExtra)
memset( wndPtr->wExtra, 0, classPtr->wc.cbWndExtra );
classPtr->cWindows++;
/* Get class or window DC if needed */
if (classPtr->wc.style & CS_OWNDC)
wndPtr->hdce = DCE_AllocDCE( DCE_WINDOW_DC );
else if (classPtr->wc.style & CS_CLASSDC)
wndPtr->hdce = classPtr->hdce;
else
wndPtr->hdce = 0;
/* Insert the window in the linked list */
WIN_LinkWindow( hwnd, HWND_TOP );
/* Send the WM_GETMINMAXINFO message and fix the size if needed */
NC_GetMinMaxInfo( hwnd, &maxSize, &maxPos, &minTrack, &maxTrack );
if (maxSize.x < width) width = maxSize.x;
if (maxSize.y < height) height = maxSize.y;
if (width <= 0) width = 1;
if (height <= 0) height = 1;
wndPtr->rectWindow.left = x;
wndPtr->rectWindow.top = y;
wndPtr->rectWindow.right = x + width;
wndPtr->rectWindow.bottom = y + height;
wndPtr->rectClient = wndPtr->rectWindow;
wndPtr->rectNormal = wndPtr->rectWindow;
/* Create the X window (only for top-level windows, and then only */
/* when there's no desktop window) */
if (!(style & WS_CHILD) && (rootWindow == DefaultRootWindow(display)))
{
if (Options.managed && ((style & (WS_DLGFRAME | WS_THICKFRAME)) ||
(exStyle & WS_EX_DLGMODALFRAME)))
{
win_attr.event_mask = ExposureMask | KeyPressMask |
KeyReleaseMask | PointerMotionMask |
ButtonPressMask | ButtonReleaseMask |
FocusChangeMask | StructureNotifyMask;
win_attr.override_redirect = FALSE;
wndPtr->flags |= WIN_MANAGED;
}
else
{
win_attr.event_mask = ExposureMask | KeyPressMask |
KeyReleaseMask | PointerMotionMask |
ButtonPressMask | ButtonReleaseMask |
FocusChangeMask;
win_attr.override_redirect = TRUE;
}
win_attr.colormap = COLOR_WinColormap;
win_attr.backing_store = Options.backingstore ? WhenMapped : NotUseful;
win_attr.save_under = ((classPtr->wc.style & CS_SAVEBITS) != 0);
win_attr.cursor = CURSORICON_XCursor;
wndPtr->window = XCreateWindow( display, rootWindow, x, y,
width, height, 0, CopyFromParent,
InputOutput, CopyFromParent,
CWEventMask | CWOverrideRedirect |
CWColormap | CWCursor | CWSaveUnder |
CWBackingStore, &win_attr );
XStoreName( display, wndPtr->window, PTR_SEG_TO_LIN(windowName) );
XA_WM_DELETE_WINDOW = XInternAtom( display, "WM_DELETE_WINDOW",
False );
XSetWMProtocols( display, wndPtr->window, &XA_WM_DELETE_WINDOW, 1 );
if (parent) /* Get window owner */
{
Window win = WIN_GetXWindow( parent );
if (win) XSetTransientForHint( display, wndPtr->window, win );
}
EVENT_RegisterWindow( wndPtr->window, hwnd );
}
if ((style & WS_CAPTION) && !(style & WS_CHILD))
{
if (menu) SetMenu(hwnd, menu);
else if (classPtr->wc.lpszMenuName)
SetMenu( hwnd, LoadMenu( instance, classPtr->wc.lpszMenuName ) );
}
else wndPtr->wIDmenu = (UINT)menu;
GetSystemMenu( hwnd, TRUE ); /* Create a copy of the system menu */
/* Send the WM_CREATE message */
createStruct.lpCreateParams = (LPSTR)data;
createStruct.hInstance = instance;
createStruct.hMenu = menu;
createStruct.hwndParent = parent;
createStruct.cx = width;
createStruct.cy = height;
createStruct.x = x;
createStruct.y = y;
createStruct.style = style;
createStruct.lpszName = windowName;
createStruct.lpszClass = className;
createStruct.dwExStyle = 0;
wmcreate = SendMessage( hwnd, WM_NCCREATE, 0, (LPARAM)MAKE_SEGPTR(&createStruct) );
if (!wmcreate)
{
dprintf_win(stddeb,"CreateWindowEx: WM_NCCREATE return 0\n");
wmcreate = -1;
}
else
{
WINPOS_SendNCCalcSize( hwnd, FALSE, &wndPtr->rectWindow,
NULL, NULL, NULL, &wndPtr->rectClient );
wmcreate = SendMessage(hwnd, WM_CREATE, 0, (LPARAM)MAKE_SEGPTR(&createStruct));
}
if (wmcreate == -1)
{
/* Abort window creation */
dprintf_win(stddeb,"CreateWindowEx: wmcreate==-1, aborting\n");
WIN_DestroyWindow( hwnd );
return 0;
}
WIN_SendParentNotify( hwnd, WM_CREATE, wndPtr->wIDmenu, (LONG)hwnd );
/* Show the window, maximizing or minimizing if needed */
if (wndPtr->dwStyle & WS_MINIMIZE)
{
wndPtr->dwStyle &= ~WS_MAXIMIZE;
WINPOS_FindIconPos( hwnd );
SetWindowPos( hwnd, 0, wndPtr->ptIconPos.x, wndPtr->ptIconPos.y,
SYSMETRICS_CXICON, SYSMETRICS_CYICON,
SWP_FRAMECHANGED |
(style & WS_VISIBLE) ? SWP_SHOWWINDOW : 0 );
}
else if (wndPtr->dwStyle & WS_MAXIMIZE)
{
SetWindowPos( hwnd, 0, maxPos.x, maxPos.y, maxSize.x, maxSize.y,
SWP_FRAMECHANGED |
(style & WS_VISIBLE) ? SWP_SHOWWINDOW : 0 );
}
else if (style & WS_VISIBLE) ShowWindow( hwnd, SW_SHOW );
dprintf_win(stddeb, "CreateWindowEx: return %04x\n", hwnd);
return hwnd;
}
/***********************************************************************
* DestroyWindow (USER.53)
*/
BOOL DestroyWindow( HWND hwnd )
{
WND * wndPtr;
CLASS * classPtr;
dprintf_win(stddeb, "DestroyWindow(%04x)\n", hwnd);
/* Initialisation */
if (hwnd == pWndDesktop->hwndSelf) return FALSE; /* Can't destroy desktop*/
if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
if (!(classPtr = CLASS_FindClassPtr( wndPtr->hClass ))) return FALSE;
/* Hide the window */
if (wndPtr->dwStyle & WS_VISIBLE)
SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_HIDEWINDOW | SWP_NOACTIVATE |
SWP_NOZORDER | SWP_NOMOVE | SWP_NOSIZE );
if ((hwnd == GetCapture()) || IsChild( hwnd, GetCapture() ))
ReleaseCapture();
WIN_SendParentNotify( hwnd, WM_DESTROY, wndPtr->wIDmenu, (LONG)hwnd );
/* Recursively destroy owned windows */
for (;;)
{
WND *siblingPtr = wndPtr->parent->child; /* First sibling */
while (siblingPtr)
{
if (siblingPtr->owner == wndPtr) break;
siblingPtr = siblingPtr->next;
}
if (siblingPtr) DestroyWindow( siblingPtr->hwndSelf );
else break;
}
/* Send destroy messages and destroy children */
SendMessage( hwnd, WM_DESTROY, 0, 0 );
while (wndPtr->child) /* The child removes itself from the list */
DestroyWindow( wndPtr->child->hwndSelf );
SendMessage( hwnd, WM_NCDESTROY, 0, 0 );
/* Destroy the window */
WIN_DestroyWindow( hwnd );
return TRUE;
}
/***********************************************************************
* CloseWindow (USER.43)
*/
BOOL CloseWindow(HWND hWnd)
{
WND * wndPtr = WIN_FindWndPtr(hWnd);
if (wndPtr->dwStyle & WS_CHILD) return TRUE;
ShowWindow(hWnd, SW_MINIMIZE);
return TRUE;
}
/***********************************************************************
* OpenIcon (USER.44)
*/
BOOL OpenIcon(HWND hWnd)
{
if (!IsIconic(hWnd)) return FALSE;
ShowWindow(hWnd, SW_SHOWNORMAL);
return(TRUE);
}
/***********************************************************************
* FindWindow (USER.50)
*/
HWND FindWindow( SEGPTR ClassMatch, LPSTR TitleMatch )
{
HCLASS hclass;
CLASS *classPtr;
WND *wndPtr;
if (ClassMatch)
{
hclass = CLASS_FindClassByName( ClassMatch, (HINSTANCE)0xffff,
&classPtr );
if (!hclass) return 0;
}
else hclass = 0;
wndPtr = pWndDesktop->child;
while (wndPtr)
{
if (!hclass || (wndPtr->hClass == hclass))
{
/* Found matching class */
if (!TitleMatch) return wndPtr->hwndSelf;
if (wndPtr->hText)
{
char *textPtr = (char *) USER_HEAP_LIN_ADDR( wndPtr->hText );
if (!strcmp( textPtr, TitleMatch )) return wndPtr->hwndSelf;
}
}
wndPtr = wndPtr->next;
}
return 0;
}
/**********************************************************************
* WIN_GetDesktop
*/
WND *WIN_GetDesktop(void)
{
return pWndDesktop;
}
/**********************************************************************
* GetDesktopWindow (USER.286)
*/
HWND GetDesktopWindow(void)
{
return pWndDesktop->hwndSelf;
}
/**********************************************************************
* GetDesktopHwnd (USER.278)
*
* Exactly the same thing as GetDesktopWindow(), but not documented.
* Don't ask me why...
*/
HWND GetDesktopHwnd(void)
{
return pWndDesktop->hwndSelf;
}
/*******************************************************************
* EnableWindow (USER.34)
*/
BOOL EnableWindow( HWND hwnd, BOOL enable )
{
WND *wndPtr;
if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
if (enable && (wndPtr->dwStyle & WS_DISABLED))
{
/* Enable window */
wndPtr->dwStyle &= ~WS_DISABLED;
SendMessage( hwnd, WM_ENABLE, TRUE, 0 );
return TRUE;
}
else if (!enable && !(wndPtr->dwStyle & WS_DISABLED))
{
/* Disable window */
wndPtr->dwStyle |= WS_DISABLED;
if ((hwnd == GetFocus()) || IsChild( hwnd, GetFocus() ))
SetFocus( 0 ); /* A disabled window can't have the focus */
if ((hwnd == GetCapture()) || IsChild( hwnd, GetCapture() ))
ReleaseCapture(); /* A disabled window can't capture the mouse */
SendMessage( hwnd, WM_ENABLE, FALSE, 0 );
return FALSE;
}
return ((wndPtr->dwStyle & WS_DISABLED) != 0);
}
/***********************************************************************
* IsWindowEnabled (USER.35)
*/
BOOL IsWindowEnabled(HWND hWnd)
{
WND * wndPtr;
if (!(wndPtr = WIN_FindWndPtr(hWnd))) return FALSE;
return !(wndPtr->dwStyle & WS_DISABLED);
}
/**********************************************************************
* GetWindowWord (USER.133)
*/
WORD GetWindowWord( HWND hwnd, short offset )
{
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
if (offset >= 0) return *(WORD *)(((char *)wndPtr->wExtra) + offset);
switch(offset)
{
case GWW_ID: return wndPtr->wIDmenu;
#ifdef WINELIB32
case GWW_HWNDPARENT:
case GWW_HINSTANCE:
fprintf(stderr,"GetWindowWord called with offset %d.\n",offset);
return 0;
#else
case GWW_HWNDPARENT: return wndPtr->parent ? wndPtr->parent->hwndSelf : 0;
case GWW_HINSTANCE: return (WORD)wndPtr->hInstance;
#endif
}
return 0;
}
/**********************************************************************
* WIN_GetWindowInstance
*/
HINSTANCE WIN_GetWindowInstance(HWND hwnd)
{
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return (HINSTANCE)0;
return wndPtr->hInstance;
}
/**********************************************************************
* SetWindowWord (USER.134)
*/
WORD SetWindowWord( HWND hwnd, short offset, WORD newval )
{
WORD *ptr, retval;
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
if (offset >= 0) ptr = (WORD *)(((char *)wndPtr->wExtra) + offset);
else switch(offset)
{
#ifdef WINELIB32
case GWW_ID:
case GWW_HINSTANCE:
fprintf(stderr,"SetWindowWord called with offset %d.\n",offset);
return 0;
#else
case GWW_ID: ptr = &wndPtr->wIDmenu; break;
case GWW_HINSTANCE: ptr = (WORD*)&wndPtr->hInstance; break;
#endif
default: return 0;
}
retval = *ptr;
*ptr = newval;
return retval;
}
/**********************************************************************
* GetWindowLong (USER.135)
*/
LONG GetWindowLong( HWND hwnd, short offset )
{
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
if (offset >= 0) return *(LONG *)(((char *)wndPtr->wExtra) + offset);
switch(offset)
{
case GWL_STYLE: return wndPtr->dwStyle;
case GWL_EXSTYLE: return wndPtr->dwExStyle;
case GWL_WNDPROC: return (LONG)wndPtr->lpfnWndProc;
#ifdef WINELIB32
case GWW_HWNDPARENT: return wndPtr->parent ? wndPtr->parent->hwndSelf : 0;
case GWW_HINSTANCE: return wndPtr->hInstance;
#endif
}
return 0;
}
/**********************************************************************
* SetWindowLong (USER.136)
*/
LONG SetWindowLong( HWND hwnd, short offset, LONG newval )
{
LONG *ptr, retval;
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
if (offset >= 0) ptr = (LONG *)(((char *)wndPtr->wExtra) + offset);
else switch(offset)
{
case GWL_STYLE: ptr = &wndPtr->dwStyle; break;
case GWL_EXSTYLE: ptr = &wndPtr->dwExStyle; break;
case GWL_WNDPROC: ptr = (LONG *)&wndPtr->lpfnWndProc; break;
default: return 0;
}
retval = *ptr;
*ptr = newval;
return retval;
}
/*******************************************************************
* GetWindowText (USER.36)
*/
int WIN16_GetWindowText( HWND hwnd, SEGPTR lpString, INT nMaxCount )
{
return (int)SendMessage(hwnd, WM_GETTEXT, nMaxCount, (LPARAM)lpString);
}
int GetWindowText( HWND hwnd, LPSTR lpString, int nMaxCount )
{
int len;
HANDLE handle;
/* We have to allocate a buffer on the USER heap */
/* to be able to pass its address to 16-bit code */
if (!(handle = USER_HEAP_ALLOC( nMaxCount ))) return 0;
len = (int)SendMessage( hwnd, WM_GETTEXT, (WPARAM)nMaxCount,
(LPARAM)USER_HEAP_SEG_ADDR(handle) );
strncpy( lpString, USER_HEAP_LIN_ADDR(handle), nMaxCount );
USER_HEAP_FREE( handle );
return len;
}
/*******************************************************************
* SetWindowText (USER.37)
*/
void WIN16_SetWindowText( HWND hwnd, SEGPTR lpString )
{
SendMessage( hwnd, WM_SETTEXT, 0, (LPARAM)lpString );
}
void SetWindowText( HWND hwnd, LPCSTR lpString )
{
HANDLE handle;
/* We have to allocate a buffer on the USER heap */
/* to be able to pass its address to 16-bit code */
if (!(handle = USER_HEAP_ALLOC( strlen(lpString)+1 ))) return;
strcpy( USER_HEAP_LIN_ADDR(handle), lpString );
SendMessage( hwnd, WM_SETTEXT, 0, (LPARAM)USER_HEAP_SEG_ADDR(handle) );
USER_HEAP_FREE( handle );
}
/*******************************************************************
* GetWindowTextLength (USER.38)
*/
int GetWindowTextLength(HWND hwnd)
{
return (int)SendMessage(hwnd, WM_GETTEXTLENGTH, 0, 0 );
}
/*******************************************************************
* IsWindow (USER.47)
*/
BOOL IsWindow( HWND hwnd )
{
WND * wndPtr = WIN_FindWndPtr( hwnd );
return ((wndPtr != NULL) && (wndPtr->dwMagic == WND_MAGIC));
}
/*****************************************************************
* GetParent (USER.46)
*/
HWND GetParent(HWND hwnd)
{
WND *wndPtr = WIN_FindWndPtr(hwnd);
if (!wndPtr) return 0;
wndPtr = (wndPtr->dwStyle & WS_CHILD) ? wndPtr->parent : wndPtr->owner;
return wndPtr ? wndPtr->hwndSelf : 0;
}
/*****************************************************************
* WIN_GetTopParent
*
* Get the top-level parent for a child window.
*/
HWND WIN_GetTopParent( HWND hwnd )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
while (wndPtr && (wndPtr->dwStyle & WS_CHILD)) wndPtr = wndPtr->parent;
return wndPtr ? wndPtr->hwndSelf : 0;
}
/*****************************************************************
* SetParent (USER.233)
*/
HWND SetParent(HWND hwndChild, HWND hwndNewParent)
{
HWND oldParent;
WND *wndPtr = WIN_FindWndPtr(hwndChild);
WND *pWndParent = WIN_FindWndPtr( hwndNewParent );
if (!wndPtr || !pWndParent || !(wndPtr->dwStyle & WS_CHILD)) return 0;
oldParent = wndPtr->parent->hwndSelf;
WIN_UnlinkWindow(hwndChild);
if (hwndNewParent) wndPtr->parent = pWndParent;
WIN_LinkWindow(hwndChild, HWND_BOTTOM);
if (IsWindowVisible(hwndChild)) UpdateWindow(hwndChild);
return oldParent;
}
/*******************************************************************
* IsChild (USER.48)
*/
BOOL IsChild( HWND parent, HWND child )
{
WND * wndPtr = WIN_FindWndPtr( child );
while (wndPtr && (wndPtr->dwStyle & WS_CHILD))
{
wndPtr = wndPtr->parent;
if (wndPtr->hwndSelf == parent) return TRUE;
}
return FALSE;
}
/***********************************************************************
* IsWindowVisible (USER.49)
*/
BOOL IsWindowVisible( HWND hwnd )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
while (wndPtr && (wndPtr->dwStyle & WS_CHILD))
{
if (!(wndPtr->dwStyle & WS_VISIBLE)) return FALSE;
wndPtr = wndPtr->parent;
}
return (wndPtr && (wndPtr->dwStyle & WS_VISIBLE));
}
/*******************************************************************
* GetTopWindow (USER.229)
*/
HWND GetTopWindow( HWND hwnd )
{
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (wndPtr && wndPtr->child) return wndPtr->child->hwndSelf;
else return 0;
}
/*******************************************************************
* GetWindow (USER.262)
*/
HWND GetWindow( HWND hwnd, WORD rel )
{
WND * wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
switch(rel)
{
case GW_HWNDFIRST:
if (wndPtr->parent) return wndPtr->parent->child->hwndSelf;
else return 0;
case GW_HWNDLAST:
if (!wndPtr->parent) return 0; /* Desktop window */
while (wndPtr->next) wndPtr = wndPtr->next;
return wndPtr->hwndSelf;
case GW_HWNDNEXT:
if (!wndPtr->next) return 0;
return wndPtr->next->hwndSelf;
case GW_HWNDPREV:
if (!wndPtr->parent) return 0; /* Desktop window */
wndPtr = wndPtr->parent->child; /* First sibling */
if (wndPtr->hwndSelf == hwnd) return 0; /* First in list */
while (wndPtr->next)
{
if (wndPtr->next->hwndSelf == hwnd) return wndPtr->hwndSelf;
wndPtr = wndPtr->next;
}
return 0;
case GW_OWNER:
return wndPtr->owner ? wndPtr->owner->hwndSelf : 0;
case GW_CHILD:
return wndPtr->child ? wndPtr->child->hwndSelf : 0;
}
return 0;
}
/*******************************************************************
* GetNextWindow (USER.230)
*/
HWND GetNextWindow( HWND hwnd, WORD flag )
{
if ((flag != GW_HWNDNEXT) && (flag != GW_HWNDPREV)) return 0;
return GetWindow( hwnd, flag );
}
/*******************************************************************
* ShowOwnedPopups (USER.265)
*/
void ShowOwnedPopups( HWND owner, BOOL fShow )
{
WND *pWnd = pWndDesktop->child;
while (pWnd)
{
if (pWnd->owner && (pWnd->owner->hwndSelf == owner) &&
(pWnd->dwStyle & WS_POPUP))
ShowWindow( pWnd->hwndSelf, fShow ? SW_SHOW : SW_HIDE );
pWnd = pWnd->next;
}
}
/*******************************************************************
* GetLastActivePopup (USER.287)
*/
HWND GetLastActivePopup(HWND hwnd)
{
WND *wndPtr;
wndPtr = WIN_FindWndPtr(hwnd);
if (wndPtr == NULL) return hwnd;
return wndPtr->hwndLastActive;
}
/*******************************************************************
* EnumWindows (USER.54)
*/
BOOL EnumWindows( WNDENUMPROC lpEnumFunc, LPARAM lParam )
{
WND *wndPtr;
HWND *list, *pWnd;
int count;
/* We have to build a list of all windows first, to avoid */
/* unpleasant side-effects, for instance if the callback */
/* function changes the Z-order of the windows. */
/* First count the windows */
count = 0;
for (wndPtr = pWndDesktop->child; wndPtr; wndPtr = wndPtr->next) count++;
if (!count) return TRUE;
/* Now build the list of all windows */
if (!(pWnd = list = (HWND *)malloc( sizeof(HWND) * count ))) return FALSE;
for (wndPtr = pWndDesktop->child; wndPtr; wndPtr = wndPtr->next)
*pWnd++ = wndPtr->hwndSelf;
/* Now call the callback function for every window */
for (pWnd = list; count > 0; count--, pWnd++)
{
/* Make sure that window still exists */
if (!IsWindow(*pWnd)) continue;
if (!CallEnumWindowsProc( lpEnumFunc, *pWnd, lParam )) break;
}
free( list );
return TRUE;
}
/**********************************************************************
* EnumTaskWindows (USER.225)
*/
BOOL EnumTaskWindows( HTASK hTask, WNDENUMPROC lpEnumFunc, LPARAM lParam )
{
WND *wndPtr;
HWND *list, *pWnd;
HANDLE hQueue = GetTaskQueue( hTask );
int count;
/* This function is the same as EnumWindows(), */
/* except for an added check on the window queue. */
/* First count the windows */
count = 0;
for (wndPtr = pWndDesktop->child; wndPtr; wndPtr = wndPtr->next)
if (wndPtr->hmemTaskQ == hQueue) count++;
if (!count) return TRUE;
/* Now build the list of all windows */
if (!(pWnd = list = (HWND *)malloc( sizeof(HWND) * count ))) return FALSE;
for (wndPtr = pWndDesktop->child; wndPtr; wndPtr = wndPtr->next)
if (wndPtr->hmemTaskQ == hQueue) *pWnd++ = wndPtr->hwndSelf;
/* Now call the callback function for every window */
for (pWnd = list; count > 0; count--, pWnd++)
{
/* Make sure that window still exists */
if (!IsWindow(*pWnd)) continue;
if (!CallEnumTaskWndProc( lpEnumFunc, *pWnd, lParam )) break;
}
free( list );
return TRUE;
}
/*******************************************************************
* WIN_EnumChildWin
*
* o hwnd is the first child to use, loop until all next windows
* are processed
*
* o call wdnenumprc
*
* o call ourselves with the next child window
*
*/
static BOOL WIN_EnumChildWin( WND *wndPtr, FARPROC wndenumprc, LPARAM lParam )
{
WND *pWndNext, *pWndChild;
while (wndPtr)
{
pWndNext = wndPtr->next; /* storing hwnd is a way to avoid.. */
pWndChild = wndPtr->child; /* ..side effects after wndenumprc */
if (!CallEnumWindowsProc( wndenumprc, wndPtr->hwndSelf, lParam ))
return 0;
if (IsWindow(pWndChild->hwndSelf)) /*to prevent too early termination*/
if (!WIN_EnumChildWin(pWndChild, wndenumprc, lParam)) return 0;
wndPtr = pWndNext;
}
return 1;
}
/*******************************************************************
* EnumChildWindows (USER.55)
*
* o gets the first child of hwnd
*
* o calls WIN_EnumChildWin to do a recursive decent of child windows
*/
BOOL EnumChildWindows(HWND hwnd, WNDENUMPROC wndenumprc, LPARAM lParam)
{
WND *wndPtr;
dprintf_enum(stddeb,"EnumChildWindows\n");
if (hwnd == 0) return 0;
if (!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
return WIN_EnumChildWin(wndPtr->child, wndenumprc, lParam);
}
/*******************************************************************
* AnyPopup (USER.52)
*/
BOOL AnyPopup(void)
{
WND *wndPtr;
for (wndPtr = pWndDesktop->child; wndPtr; wndPtr = wndPtr->next)
if (wndPtr->owner && (wndPtr->dwStyle & WS_VISIBLE)) return TRUE;
return FALSE;
}
/*******************************************************************
* FlashWindow [USER.105]
*/
BOOL FlashWindow(HWND hWnd, BOOL bInvert)
{
WND *wndPtr = WIN_FindWndPtr(hWnd);
dprintf_win(stddeb,"FlashWindow: %04x\n", hWnd);
if (!wndPtr) return FALSE;
if (wndPtr->dwStyle & WS_MINIMIZE)
{
if (bInvert && !(wndPtr->flags & WIN_NCACTIVATED))
{
HDC hDC = GetDC(hWnd);
if (!SendMessage( hWnd, WM_ERASEBKGND, (WPARAM)hDC, (LPARAM)0 ))
wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
ReleaseDC( hWnd, hDC );
wndPtr->flags |= WIN_NCACTIVATED;
}
else
{
RedrawWindow( hWnd, 0, 0, RDW_INVALIDATE | RDW_ERASE |
RDW_UPDATENOW | RDW_FRAME );
wndPtr->flags &= ~WIN_NCACTIVATED;
}
return TRUE;
}
else
{
WPARAM wparam;
if (bInvert) wparam = !(wndPtr->flags & WIN_NCACTIVATED);
else wparam = (hWnd == GetActiveWindow());
SendMessage( hWnd, WM_NCACTIVATE, wparam, (LPARAM)0 );
return wparam;
}
}
/*******************************************************************
* SetSysModalWindow [USER.188]
*/
HWND SetSysModalWindow(HWND hWnd)
{
HWND hWndOldModal = hwndSysModal;
hwndSysModal = hWnd;
dprintf_win(stdnimp,"EMPTY STUB !! SetSysModalWindow(%04x) !\n", hWnd);
return hWndOldModal;
}
/*******************************************************************
* GetSysModalWindow [USER.189]
*/
HWND GetSysModalWindow(void)
{
return hwndSysModal;
}
/*******************************************************************
* DRAG_QueryUpdate
*
* recursively find a child that contains spDragInfo->pt point
* and send WM_QUERYDROPOBJECT
*/
BOOL DRAG_QueryUpdate( HWND hQueryWnd, SEGPTR spDragInfo )
{
BOOL wParam,bResult = 0;
POINT pt;
LPDRAGINFO ptrDragInfo = (LPDRAGINFO) PTR_SEG_TO_LIN(spDragInfo);
WND *ptrQueryWnd = WIN_FindWndPtr(hQueryWnd),*ptrWnd;
RECT tempRect; /* this sucks */
if( !ptrQueryWnd || !ptrDragInfo ) return 0;
pt = ptrDragInfo->pt;
GetWindowRect(hQueryWnd,&tempRect);
if( !PtInRect(&tempRect,pt) ||
(ptrQueryWnd->dwStyle & WS_DISABLED) )
return 0;
if( !(ptrQueryWnd->dwStyle & WS_MINIMIZE) )
{
tempRect = ptrQueryWnd->rectClient;
if(ptrQueryWnd->dwStyle & WS_CHILD)
MapWindowPoints(ptrQueryWnd->parent->hwndSelf,0,(LPPOINT)&tempRect,2);
if( PtInRect(&tempRect,pt) )
{
wParam = 0;
for (ptrWnd = ptrQueryWnd->child; ptrWnd ;ptrWnd = ptrWnd->next)
if( ptrWnd->dwStyle & WS_VISIBLE )
{
GetWindowRect(ptrWnd->hwndSelf,&tempRect);
if( PtInRect(&tempRect,pt) )
break;
}
if(ptrWnd)
{
dprintf_msg(stddeb,"DragQueryUpdate: hwnd = %04x, %d %d - %d %d\n",
ptrWnd->hwndSelf, ptrWnd->rectWindow.left, ptrWnd->rectWindow.top,
ptrWnd->rectWindow.right, ptrWnd->rectWindow.bottom );
if( !(ptrWnd->dwStyle & WS_DISABLED) )
bResult = DRAG_QueryUpdate(ptrWnd->hwndSelf, spDragInfo);
}
if(bResult) return bResult;
}
else wParam = 1;
}
else wParam = 1;
ScreenToClient(hQueryWnd,&ptrDragInfo->pt);
ptrDragInfo->hScope = hQueryWnd;
bResult = SendMessage( hQueryWnd ,WM_QUERYDROPOBJECT ,
(WPARAM)wParam ,(LPARAM) spDragInfo );
if( !bResult )
ptrDragInfo->pt = pt;
return bResult;
}
/*******************************************************************
* DragDetect ( USER.465 )
*
*/
BOOL DragDetect(HWND hWnd, POINT pt)
{
MSG msg;
RECT rect;
rect.left = pt.x - wDragWidth;
rect.right = pt.x + wDragWidth;
rect.top = pt.y - wDragHeight;
rect.bottom = pt.y + wDragHeight;
SetCapture(hWnd);
while(1)
{
while(PeekMessage(&msg ,0 ,WM_MOUSEFIRST ,WM_MOUSELAST ,PM_REMOVE))
{
if( msg.message == WM_LBUTTONUP )
{
ReleaseCapture();
return 0;
}
if( msg.message == WM_MOUSEMOVE )
{
POINT pt = { LOWORD(msg.lParam), HIWORD(msg.lParam) };
if( !PtInRect( &rect, pt ) )
{
ReleaseCapture();
return 1;
}
}
}
WaitMessage();
}
return 0;
}
/******************************************************************************
* DragObject ( USER.464 )
*
*/
DWORD DragObject(HWND hwndScope, HWND hWnd, WORD wObj, HANDLE hOfStruct,
WORD szList , HCURSOR hCursor)
{
MSG msg;
LPDRAGINFO lpDragInfo;
SEGPTR spDragInfo;
HCURSOR hDragCursor=0, hOldCursor=0, hBummer=0;
HANDLE hDragInfo = GlobalAlloc( GMEM_SHARE | GMEM_ZEROINIT, 2*sizeof(DRAGINFO));
WND *wndPtr = WIN_FindWndPtr(hWnd);
DWORD dwRet = 0;
short dragDone = 0;
HCURSOR hCurrentCursor = 0;
HWND hCurrentWnd = 0;
WORD btemp;
lpDragInfo = (LPDRAGINFO) GlobalLock(hDragInfo);
spDragInfo = (SEGPTR) WIN16_GlobalLock(hDragInfo);
if( !lpDragInfo || !spDragInfo ) return 0L;
hBummer = LoadCursor(0,IDC_BUMMER);
if( !hBummer || !wndPtr )
{
GlobalFree(hDragInfo);
return 0L;
}
if(hCursor)
{
if( !(hDragCursor = CURSORICON_IconToCursor(hCursor)) )
{
GlobalFree(hDragInfo);
return 0L;
}
if( hDragCursor == hCursor ) hDragCursor = 0;
else hCursor = hDragCursor;
hOldCursor = SetCursor(hDragCursor);
}
lpDragInfo->hWnd = hWnd;
lpDragInfo->hScope = 0;
lpDragInfo->wFlags = wObj;
lpDragInfo->hList = szList; /* near pointer! */
lpDragInfo->hOfStruct = hOfStruct;
lpDragInfo->l = 0L;
SetCapture(hWnd);
ShowCursor(1);
while( !dragDone )
{
WaitMessage();
if( !PeekMessage(&msg,0,WM_MOUSEFIRST,WM_MOUSELAST,PM_REMOVE) )
continue;
*(lpDragInfo+1) = *lpDragInfo;
lpDragInfo->pt = msg.pt;
/* update DRAGINFO struct */
dprintf_msg(stddeb,"drag: lpDI->hScope = %04x\n",lpDragInfo->hScope);
if( (btemp = (WORD)DRAG_QueryUpdate(hwndScope, spDragInfo)) > 0 )
hCurrentCursor = hCursor;
else
{
hCurrentCursor = hBummer;
lpDragInfo->hScope = 0;
}
if( hCurrentCursor )
SetCursor(hCurrentCursor);
dprintf_msg(stddeb,"drag: got %04x\n",btemp);
/* send WM_DRAGLOOP */
SendMessage( hWnd, WM_DRAGLOOP, (WPARAM)(hCurrentCursor != hBummer) ,
(LPARAM) spDragInfo );
/* send WM_DRAGSELECT or WM_DRAGMOVE */
if( hCurrentWnd != lpDragInfo->hScope )
{
if( hCurrentWnd )
SendMessage( hCurrentWnd, WM_DRAGSELECT, 0,
(LPARAM)MAKELONG(LOWORD(spDragInfo)+sizeof(DRAGINFO),
HIWORD(spDragInfo)) );
hCurrentWnd = lpDragInfo->hScope;
if( hCurrentWnd )
SendMessage( hCurrentWnd, WM_DRAGSELECT, 1, (LPARAM)spDragInfo);
}
else
if( hCurrentWnd )
SendMessage( hCurrentWnd, WM_DRAGMOVE, 0, (LPARAM)spDragInfo);
/* check if we're done */
if( msg.message == WM_LBUTTONUP || msg.message == WM_NCLBUTTONUP )
dragDone = TRUE;
}
ReleaseCapture();
ShowCursor(0);
if( hCursor )
{
SetCursor(hOldCursor);
if( hDragCursor )
DestroyCursor(hDragCursor);
}
if( hCurrentCursor != hBummer )
dwRet = SendMessage( lpDragInfo->hScope, WM_DROPOBJECT,
(WPARAM)hWnd, (LPARAM)spDragInfo );
GlobalFree(hDragInfo);
return dwRet;
}
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