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Article #16806

Re: PostMessage() with HWND_BROADCAST not working.

#16806
From: Jeff Douglass
Date: Thu, 24 Apr 2003 18:06
32 lines
1962 bytes
I am trying to use the broadcast option so in case at a later point in time
I need to perform some added processing from any number of different windows
the hook is already there.

The message is simply defined as
#define THE_MESSAGE (WM_USER + 3332)

At the end of the initializtion routine that handles all the app's
initialization I call:

PostMessage(HWND_BROADCAST, THE_MESSAGE,0,0);

The startup window is created and shown as follows:

Application->Initialize() ;
startupwindow->Show();
startupwindow->Update();

the call to the app's initialization routine.


The only thing I can think is the problem is that the startup window is not
a "top level window" The MS documentation of PostMessage says that the
broadcast option send the message to all "top level windows" but not child
windows. I can not find an exact definition of what makes a window a "top
level window". My app is a SDI app so there are no child windows.

Hope this info helps answer the problem.

Thanks again

Jeff
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Subject: Re: PostMessage() with HWND_BROADCAST not working.
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