hi, i use DX11 to bring my game into an exclusive fullscreen mode.
i want to handle the events, when the fullscreen mode is interrupted by the OS. like when alt+tab is pressed, or ctrl+alt+del.
is there an event on the Window or the WindowHandle where i can subscribe to?
You might want to use GetForegroundWindow() and compare the result with your window handle.
In your windows message loop, you can listen for events of type "WM_ACTIVATE" and "wParam == WA_INACTIVE".
See the msn documentation for details.
This will solve only part of your problem though, because it won't work for all the possible cases:
So, if you really want to catch all possible cases where your fullscreen mode is interrupted, you have to do what Medo3337 pointed out:
In regular time intervals, actively check the state of your window and/or your display device. This might seem inconvenient, but I have found no better way.
You may also wish to test the return value from your Present call for DXGI_STATUS_OCCLUDED which should happen if another window is occluding the game window.
Further reading: IDXGISwapChain::Present http://msdn.microsoft.com/en-us/library/windows/desktop/bb174576%28v=vs.85%29.aspx
