Re: HWND_BROADCAST doesn�t work!

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#6016

From: JD
Date: Sat, 18 Jun 2005 19:11

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1310 bytes

"Alexandre S�" <alexandre@daccord.com.br> wrote:
>
> [...] PostMessage(HWND_BROADCAST, WM_USER, 0, 0L);

This is a potential problem for other applications. If any
application is also using WM_USER, then it will respond to
your message in error.

If you're going to use HWND_BROADCAST, I would suggest that
you first call RegisterWindowMessage in both applications,
with the exact same string, and use the returned numeric value
as the message code.

~ JD

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