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Article #6028

Re: HWND_BROADCAST doesn�t work!

#6028
From: Alexandre S�
Date: Mon, 20 Jun 2005 13:12
27 lines
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> You are not getting a window that is capable of receiving
> HWND_BROADCAST

That�s not the question...
Here is the solution/explanation by Peter Below (TeamB):

> Whether this works depends on your Windows platform. The docs are not
> quite clear about it, but you have to use a message ID obtained from
> RegisterWindowMessage for a broadcast message. Only a subset of the
> predefined messages (e.g. WM_DEVICECHANGE, WM_SETTINGSCHANGE) seem to
> be allowed for broadcasting, at least on Win2K and XP. That is a Good
> Thing, too. Consider what a PostMessage(HWND_BROADCAST, WM_SYSCOMMAND,
> SC_CLOSE, 0) would do if it worked... (Warning! I did not test whether
> it actually does work <g>).

But still remain the question: why on a different IDE (Borland C++ anyway)
it works without register the broadcast message?

That�s why the problem arises... I had to migrate a Borland C++ project to
the Borland C++ Builder 6 (a Delphi like IDE) and on such "Delphi like IDE"
it�s necessary to register the broadcast message (like it have to be).

So... would you mind why I don�t need to register the broadcast message on
that IDE from where the project became?

Best regards,
Alexandre S�
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From: "Alexandre S�" <alexandre@daccord.com.br>
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Subject: Re: HWND_BROADCAST doesn�t work!
Date: Mon, 20 Jun 2005 10:12:30 -0300
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