fix the modal widget initialization issue.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@444 bbd45198-f89e-11dd-88c7-29a3b14d5316

rtgui/widgets/window.c

@@ -27,6 +27,8 @@ static void _rtgui_win_constructor(rtgui_win_t *win)
 	win->on_deactivate	= RT_NULL;
 	win->on_close		= RT_NULL;
 	win->title			= RT_NULL;
+	win->modal_code		= RTGUI_MODAL_OK;
+	win->modal_widget	= RT_NULL;
 
 	/* set window hide */
 	RTGUI_WIDGET_HIDE(RTGUI_WIDGET(win));

rtgui/widgets/workbench.c

@@ -21,11 +21,12 @@ static void _rtgui_workbench_constructor(rtgui_workbench_t *workbench)
 	rtgui_widget_set_event_handler(RTGUI_WIDGET(workbench), rtgui_workbench_event_handler);
 
 	/* set attributes */
-	workbench->panel = RT_NULL;
-	workbench->flag = RTGUI_WORKBENCH_FLAG_DEFAULT;
-	workbench->modal_code = RTGUI_MODAL_OK;
-	workbench->title = RT_NULL;
+	workbench->flag 		= RTGUI_WORKBENCH_FLAG_DEFAULT;
+	workbench->panel 		= RT_NULL;
+	workbench->title 		= RT_NULL;
 	workbench->current_view = RT_NULL;
+	workbench->modal_code 	= RTGUI_MODAL_OK;
+	workbench->modal_widget = RT_NULL;
 }
 
 static void _rtgui_workbench_destructor(rtgui_workbench_t *workbench)