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winex11: Use the correct drop effect for WM_DROPFILES. 

Tests show that on Windows, for a window to indicate it will accept a
file drop or to actually accept it, it must have WS_EX_ACCEPTFILES in
its style, contain DROPEFFECT_COPY (which will be chosen if offered
among several drop effects), and be offered the HDROP format.
This commit is contained in:
Damjan Jovanovic 2015-08-07 04:21:27 +02:00 committed by Alexandre Julliard
parent b78a9f1aa1
commit 3f99e71fde
1 changed files with 59 additions and 8 deletions
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67
dlls/winex11.drv/xdnd.c
View File

@ -74,7 +74,8 @@ static HWND XDNDLastDropTargetWnd;
static void X11DRV_XDND_InsertXDNDData(int property, int format, HANDLE contents);
static void X11DRV_XDND_ResolveProperty(Display *display, Window xwin, Time tm,
Atom *types, unsigned long count);
static void X11DRV_XDND_SendDropFiles(HWND hwnd);
static BOOL X11DRV_XDND_HasHDROP(void);
static HRESULT X11DRV_XDND_SendDropFiles(HWND hwnd);
static void X11DRV_XDND_FreeDragDropOp(void);
static CRITICAL_SECTION xdnd_cs;
@ -338,8 +339,15 @@ void X11DRV_XDND_PositionEvent( HWND hWnd, XClientMessageEvent *event )
if (XDNDAccepted)
accept = 1;
if (GetWindowLongW( hWnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES)
else if (dropTarget == NULL &&
(GetWindowLongW( hWnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES) &&
(effect & DROPEFFECT_COPY) &&
X11DRV_XDND_HasHDROP())
{
accept = 1;
effect = DROPEFFECT_COPY;
XDNDDropEffect = effect;
}
TRACE("action req: %ld accept(%d) at x(%d),y(%d)\n",
event->data.l[4], accept, XDNDxy.x, XDNDxy.y);
@ -407,8 +415,17 @@ void X11DRV_XDND_DropEvent( HWND hWnd, XClientMessageEvent *event )
{
/* Only send WM_DROPFILES if there is no drop target. Doing both
* causes winamp to duplicate the dropped files (#29081) */
if (GetWindowLongW( hWnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES)
X11DRV_XDND_SendDropFiles( hWnd );
if ((GetWindowLongW( hWnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES) &&
(effect & DROPEFFECT_COPY) &&
X11DRV_XDND_HasHDROP())
{
HRESULT hr = X11DRV_XDND_SendDropFiles( hWnd );
if (SUCCEEDED(hr))
{
accept = 1;
effect = DROPEFFECT_COPY;
}
}
}
X11DRV_XDND_FreeDragDropOp();
@ -552,9 +569,9 @@ static void X11DRV_XDND_InsertXDNDData(int property, int format, HANDLE contents
/**************************************************************************
* X11DRV_XDND_SendDropFiles
* X11DRV_XDND_HasHDROP
*/
static void X11DRV_XDND_SendDropFiles(HWND hwnd)
static BOOL X11DRV_XDND_HasHDROP(void)
{
LPXDNDDATA current = NULL;
BOOL found = FALSE;
@ -571,10 +588,33 @@ static void X11DRV_XDND_SendDropFiles(HWND hwnd)
}
}
LeaveCriticalSection(&xdnd_cs);
return found;
}
/**************************************************************************
* X11DRV_XDND_SendDropFiles
*/
static HRESULT X11DRV_XDND_SendDropFiles(HWND hwnd)
{
HRESULT hr;
LPXDNDDATA current = NULL;
BOOL found = FALSE;
EnterCriticalSection(&xdnd_cs);
LIST_FOR_EACH_ENTRY(current, &xdndData, XDNDDATA, entry)
{
if (current->cf_win == CF_HDROP)
{
found = TRUE;
break;
}
}
if (found)
{
HGLOBAL dropHandle = GlobalAlloc(GMEM_FIXED, GlobalSize(current->contents));
if (dropHandle)
{
DROPFILES *lpDrop = GlobalLock(dropHandle);
@ -587,12 +627,23 @@ static void X11DRV_XDND_SendDropFiles(HWND hwnd)
lpDrop->fNC, lpDrop->pt.x, lpDrop->pt.y, ((char*)lpDrop) + lpDrop->pFiles,
debugstr_w((WCHAR*)(((char*)lpDrop) + lpDrop->pFiles)));
GlobalUnlock(dropHandle);
if (!PostMessageW(hwnd, WM_DROPFILES, (WPARAM)dropHandle, 0))
if (PostMessageW(hwnd, WM_DROPFILES, (WPARAM)dropHandle, 0))
hr = S_OK;
else
{
hr = HRESULT_FROM_WIN32(GetLastError());
GlobalFree(dropHandle);
}
}
else
hr = HRESULT_FROM_WIN32(GetLastError());
}
else
hr = E_FAIL;
LeaveCriticalSection(&xdnd_cs);
return hr;
}