disconnect a second monitor, my maximized application crashed

• Subject: disconnect a second monitor, my maximized application crashed
• From: "Yvonne Du" <email@hidden>
• Date: Fri, 23 May 2008 15:45:58 +0800
• Delivered-to: email@hidden
• Delivered-to: email@hidden
• Importance: Normal

Hi all, here is my problem. Here I called the application I am working on AppX. Below is the steps I did: 1. I connected a second monitor on my laptop( The version of OS is Mac OS X 10.5.2). 2. I launched AppX and I moved the window of AppX to the second monitor. 3. I clicked window  Zoom widget. 4. I disconnected the monitor.   Results: AppX crashed.   I looked in the stack, and I found the application received a Event having the value of kEventlassControl/kEventControlDraw. It caused the application to draw the window, and by that time the current GDHandle pointer I used had become invalid.   I tried the TextEdit application following the same steps listed above. And its window was redrawed on my laptop's display. What I want to know is that: 1) When I disconnect the second monitor, what kind event the system will send.                                           2) And why I receive the kEventlassControl/kEventControlDraw Event.                                           3) I also want to know how the TextEdit does so.     Thanks Yvonne Du   P.S. I captured the stack

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