Implemented private function BWindow::DequeueAll() which reads all pending

messages from the port.
BView::GetMouse() now calls this function if it was called from the window's
thread and thus blocking the message loop.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12716 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/interface/Window.cpp

@@ -2316,7 +2316,23 @@ void BWindow::InitData(	BRect frame, const char* title, window_look look,
   	BuildTopView();
 }
 
-//------------------------------------------------------------------------------
+
+/**	Reads all pending messages from the window port and put them into the queue.
+ */
+
+void
+BWindow::DequeueAll()
+{
+	//	Get message count from port
+	int32 count = port_count(fMsgPort);
+
+	for (int32 i = 0; i < count; i++) {
+		BMessage *message = MessageFromPort(0);
+		if (message != NULL)
+			fQueue->AddMessage(message);
+	}
+}
+
 
 // TODO: This here is a nearly full code duplication to BLooper::task_loop
 // but with one little difference: It uses the determine_target function