Re: How to avoid multiple instances of a program in NT and 95?

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#2926

From: Raymond Chen
Date: Tue, 04 Feb 1997 00:00

16 lines
1411 bytes

>BOOL CYourApp::CheckFirst() 
>{
>        CWnd* wndPrev;
>        CWnd* wndChild;
>        if (wndPrev=CWnd::FindWindow(m_pszAppName,NULL))
>        {

This still won't work if a second instance is started before the
first gets a chance to create its window.

Create a named event and check if you get ERROR_ALREADY_EXISTS
from GetLastError.
--
(My return address is intentionally invalid; delete ".---" to get my real address.
My responses are not to be considered official technical support or advice.)

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From: raymondc@microsoft.com.--- (Raymond Chen)
Subject: Re: How to avoid multiple instances of a program in NT and 95?
Date: 1997/02/04
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