You call the IsHungAppWindow function to determine if Microsoft Windows considers that a specified application is not responding. An application is considered to be not responding if it is not waiting for input, is not in startup processing, and has not called PeekMessage within the internal timeout period of 5 seconds.
Syntax
BOOL IsHungAppWindow( HWND hWnd ); Parameters
hWnd [in] Handle to the window. Return Value
Returns TRUE if the window stops responding, otherwise returns FALSE. Ghost windows always return TRUE.
Remarks
The Windows timeout criteria of 5 seconds is subject to change.
Although you can access this function by using LoadLibrary and GetProcAddress combined in Windows versions prior to Windows XP, the function is not accessible using the standard Include file and library linkage. The header files included in Windows XP Service Pack 1 (SP1) and Windows Server 2003 document this function and make it accessible using the appropriate Include file and library linkage. However, this function is not intended for general use. It is recommended that you do not use it in new programs because it might be altered or unavailable in subsequent versions of Windows.
Function Information
Minimum DLL Version user32.dll Header Declared in Winuser.h, include Windows.h Import library User32.lib Minimum operating systems Windows 2000
