user32: Reimplement IsHungAppWindow

[Dmitry Timoshkov]

Hello,

Changelog:
    user32: Reimplement IsHungAppWindow.
---
diff --git a/dlls/user32/message.c b/dlls/user32/message.c
index d3f4a3a..67bf10e 100644
--- a/dlls/user32/message.c
+++ b/dlls/user32/message.c
@@ -3556,6 +3556,13 @@ BOOL WINAPI GetGUIThreadInfo( DWORD id, GUITHREADINFO *info )
  */
 BOOL WINAPI IsHungAppWindow( HWND hWnd )
 {
-    DWORD_PTR dwResult;
-    return !SendMessageTimeoutA(hWnd, WM_NULL, 0, 0, SMTO_ABORTIFHUNG, 5000, &dwResult);
+    BOOL ret;
+
+    SERVER_START_REQ( is_window_hung )
+    {
+        req->win = hWnd;
+        ret = !wine_server_call_err( req ) && reply->is_hung;
+    }
+    SERVER_END_REQ;
+    return ret;
 }
diff --git a/server/protocol.def b/server/protocol.def
index aa10f89..bfd7242 100644
--- a/server/protocol.def
+++ b/server/protocol.def
@@ -1925,6 +1925,14 @@ enum message_type
 @END
 
 
+/* check if the thread owning the window is hung */
+ at REQ(is_window_hung)
+    user_handle_t   win;       /* window handle */
+ at REPLY
+    int is_hung;
+ at END
+
+
 /* Retrieve info about a serial port */
 @REQ(get_serial_info)
     obj_handle_t handle;       /* handle to comm port */
diff --git a/server/queue.c b/server/queue.c
index d837e84..a32bd7e 100644
--- a/server/queue.c
+++ b/server/queue.c
@@ -1562,6 +1562,22 @@ void post_win_event( struct thread *thread, unsigned int event,
     }
 }
 
+
+/* check if the thread owning the window is hung */
+DECL_HANDLER(is_window_hung)
+{
+    struct thread *thread;
+
+    thread = get_window_thread( req->win );
+    if (thread)
+    {
+        reply->is_hung = is_queue_hung( thread->queue );
+        release_object( thread );
+    }
+    else reply->is_hung = 0;
+}
+
+
 /* get the message queue of the current thread */
 DECL_HANDLER(get_msg_queue)
 {
-- 
1.5.3.7