API - sendmessages timeout |
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// Question/Problem/Abstract: // How can I check if an application is still running or has stopped responding? // Answer: // The answer is simple: SendMessageTimeout! // Using this API you can send a message to a window and wait for a timeout // before continuing; if the application responds before timeout the is still running // else is hung. // Here how to use it.
function isHung(theWindow: HWnd; timeOut: Longint): Boolean; var dwResult: DWord; begin Result := SendMessageTimeout(theWindow, WM_NULL, 0, 0, SMTO_ABORTIFHUNG or SMTO_BLOCK, timeOut, dwResult) <> 0; end; |