win32u: Introduce NtUserClipboardWindowProc.

dlls/win32u/driver.c

@@ -1099,6 +1099,11 @@ static BOOL loaderdrv_ClipCursor( const RECT *clip )
     return load_driver()->pClipCursor( clip );
 }
 
+static LRESULT nulldrv_ClipboardWindowProc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
+{
+    return 0;
+}
+
 static void loaderdrv_UpdateClipboard(void)
 {
     load_driver()->pUpdateClipboard();
@@ -1172,6 +1177,7 @@ static const struct user_driver_funcs lazy_load_driver =
     loaderdrv_SetCursorPos,
     loaderdrv_ClipCursor,
     /* clipboard functions */
+    nulldrv_ClipboardWindowProc,
     loaderdrv_UpdateClipboard,
     /* display modes */
     loaderdrv_ChangeDisplaySettingsEx,
@@ -1247,6 +1253,7 @@ void CDECL __wine_set_user_driver( const struct user_driver_funcs *funcs, UINT v
     SET_USER_FUNC(GetCursorPos);
     SET_USER_FUNC(SetCursorPos);
     SET_USER_FUNC(ClipCursor);
+    SET_USER_FUNC(ClipboardWindowProc);
     SET_USER_FUNC(UpdateClipboard);
     SET_USER_FUNC(ChangeDisplaySettingsEx);
     SET_USER_FUNC(EnumDisplaySettingsEx);

dlls/win32u/message.c

@@ -2911,6 +2911,8 @@ LRESULT WINAPI NtUserMessageCall( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lpa
         return send_notify_message( hwnd, msg, wparam, lparam, ansi );
     case NtUserSendMessageCallback:
         return send_message_callback( hwnd, msg, wparam, lparam, (void *)result_info, ansi );
+    case NtUserClipboardWindowProc:
+        return user_driver->pClipboardWindowProc( hwnd, msg, wparam, lparam );
     case NtUserSpyEnter:
         spy_enter_message( ansi, hwnd, msg, wparam, lparam );
         return 0;

include/ntuser.h

@@ -189,8 +189,9 @@ enum
     NtUserSendNotifyMessage   = 0x02b7,
     NtUserSendMessageCallback = 0x02b8,
     /* Wine-specific exports */
-    NtUserSpyEnter            = 0x0300,
-    NtUserSpyExit             = 0x0301,
+    NtUserClipboardWindowProc = 0x0300,
+    NtUserSpyEnter            = 0x0301,
+    NtUserSpyExit             = 0x0302,
 };
 
 /* NtUserThunkedMenuItemInfo codes */

include/wine/gdi_driver.h

@@ -291,6 +291,7 @@ struct user_driver_funcs
     BOOL    (*pSetCursorPos)(INT,INT);
     BOOL    (*pClipCursor)(LPCRECT);
     /* clipboard functions */
+    LRESULT (*pClipboardWindowProc)(HWND,UINT,WPARAM,LPARAM);
     void    (*pUpdateClipboard)(void);
     /* display modes */
     LONG    (*pChangeDisplaySettingsEx)(LPCWSTR,LPDEVMODEW,HWND,DWORD,LPVOID);