[UXTHEME]: Use SendMessage to notify windows that the theme has changed. This needs a proper test. Makes it possible for SetWindowTheme with empty parameters to have effect immediately in the same way the tests for BCM_GETIDEALSIZE use it. Fixes the BCM_GETIDEALSIZE tests when run with an active theme.

svn path=/trunk/; revision=74038

reactos/dll/win32/uxtheme/system.c

@@ -57,7 +57,7 @@ PTHEME_FILE ActiveThemeFile;
 
 static BOOL CALLBACK UXTHEME_broadcast_msg_enumchild (HWND hWnd, LPARAM msg)
 {
-    PostMessageW(hWnd, msg, 0, 0);
+    SendMessageW(hWnd, msg, 0, 0);
     return TRUE;
 }
 
@@ -70,7 +70,7 @@ BOOL CALLBACK UXTHEME_broadcast_msg (HWND hWnd, LPARAM msg)
     }
     else
     {
-	PostMessageW(hWnd, msg, 0, 0);
+	SendMessageW(hWnd, msg, 0, 0);
 	EnumChildWindows (hWnd, UXTHEME_broadcast_msg_enumchild, msg);
     }
     return TRUE;