Subj : Re: want to execute code as soon as application is run
To   : borland.public.cpp.borlandcpp
From : Ed Mulroy
Date : Tue Jul 19 2005 08:06 pm

As I remember it, the SetupWindow function runs when the WM_CREATE message 
is received, during the CreateWindow call.  That is before the window is 
completely constructed so before it is displayed.

Programs that need to do something immediately following the end of the 
window creation often do it by performing a PostMessage to the same window 
as the last item in WM_CREATE.  That makes it the last item in the 
SetupWindow function.

The message used depends upon the application.  Many don't use a timer so 
just post a WM_TIMER message and let the code respond to it.  Others call 
RegisterWindowMessage and use that value for the message.  Still others use 
something like WM_USER+100 for the message.

..  Ed


> Simon Hearn wrote in message
> news:42dd3fc2$1@newsgroups.borland.com...
>
> I'm trying to execute a piece of code that displays a dialog
> box with two buttons, on of which is cancel - exits the
> program. I need this code to execute as soon as the application
> in run and the window is displayed.
>
> At the moment the code is in the SetupWindow() function,
> which works ok. But it's actually run before the window is fully
> created. So when I hit cancel, the application quits, but I get
> an error (an exception from the TXWindow function) saying
> the window was not created properly (because I destroyed it
> before it was fully created).
>
> So, I either need to stop this error message appearing thus
> achieving a quiet exit. Or I need to place the code after the
> window is fully created.
>
> I don't know how to do either of these so can anyone help
> me out?

.