problem about task-switching-Collection of common programming errors

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  chaos
  windows directx alt-tab task-switching
  When writing DirectX applications, obviously it’s desirable to support the user suspending the application via Alt-Tab in a way that’s fast and error-free. What is the best set of practices for ensuring this? Things that need to be addressed include:The best methods of detecting when your application has been alt-tabbed out of and when it has been returned to. What DirectX resources are lost when the user alt-tabs, and the best ways to cope with this. Major things to do and things to avoid in

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