winemac: Implement DesktopWindowProc driver entry point.

dlls/winemac.drv/gdi.c

@@ -268,6 +268,7 @@ static const struct user_driver_funcs macdrv_funcs =
     .pClipCursor = macdrv_ClipCursor,
     .pCreateDesktopWindow = macdrv_CreateDesktopWindow,
     .pCreateWindow = macdrv_CreateWindow,
+    .pDesktopWindowProc = macdrv_DesktopWindowProc,
     .pDestroyCursorIcon = macdrv_DestroyCursorIcon,
     .pDestroyWindow = macdrv_DestroyWindow,
     .pEnumDisplaySettingsEx = macdrv_EnumDisplaySettingsEx,

dlls/winemac.drv/macdrv.h

@@ -137,6 +137,7 @@ extern BOOL macdrv_SetDeviceGammaRamp(PHYSDEV dev, LPVOID ramp) DECLSPEC_HIDDEN;
 extern BOOL macdrv_ClipCursor(LPCRECT clip) DECLSPEC_HIDDEN;
 extern BOOL macdrv_CreateDesktopWindow(HWND hwnd) DECLSPEC_HIDDEN;
 extern BOOL macdrv_CreateWindow(HWND hwnd) DECLSPEC_HIDDEN;
+extern LRESULT macdrv_DesktopWindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) DECLSPEC_HIDDEN;
 extern void macdrv_DestroyWindow(HWND hwnd) DECLSPEC_HIDDEN;
 extern void macdrv_SetFocus(HWND hwnd) DECLSPEC_HIDDEN;
 extern void macdrv_SetLayeredWindowAttributes(HWND hwnd, COLORREF key, BYTE alpha,

dlls/winemac.drv/window.c

@@ -1557,11 +1557,9 @@ BOOL macdrv_CreateDesktopWindow(HWND hwnd)
 }
 
 
-static WNDPROC desktop_orig_wndproc;
-
 #define WM_WINE_NOTIFY_ACTIVITY WM_USER
 
-static LRESULT CALLBACK desktop_wndproc_wrapper( HWND hwnd, UINT msg, WPARAM wp, LPARAM lp )
+LRESULT macdrv_DesktopWindowProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
 {
     switch (msg)
     {
@@ -1580,7 +1578,7 @@ static LRESULT CALLBACK desktop_wndproc_wrapper( HWND hwnd, UINT msg, WPARAM wp,
         break;
     }
     }
-    return desktop_orig_wndproc( hwnd, msg, wp, lp );
+    return NtUserMessageCall(hwnd, msg, wp, lp, 0, NtUserDefWindowProc, FALSE);
 }
 
 /**********************************************************************
@@ -1590,9 +1588,6 @@ BOOL macdrv_CreateWindow(HWND hwnd)
 {
     if (hwnd == GetDesktopWindow())
     {
-        desktop_orig_wndproc = (WNDPROC)SetWindowLongPtrW( GetDesktopWindow(),
-            GWLP_WNDPROC, (LONG_PTR)desktop_wndproc_wrapper );
-
         macdrv_init_clipboard();
     }
     return TRUE;