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Re: Can a CALL_EXTERNAL .dll create a window? [message #36363 is a reply to message #36303]

Wed, 03 September 2003 12:37

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

Hi Matt,

Would you be willing/able to share some example code? I understand if you
can't, but need to ask. I have wanted to play with this for a while but I
am having a hard time justifying the investment of time. Anything that
could help speed the process would be greatly appreciated.

-Rick

"Matt Feinstein" wrote in message ...
> On Fri, 29 Aug 2003 11:37:00 -0400, Matt Feinstein > wrote:
>
>> Hi all--
>>
>
> ... was trying to create a Win32 window in a CALL_EXTERNAL .dll, but
> seemed to be getting nowhere...
>
>> Matt Feinstein
>
> Since I asked the question, I guess I should now answer it.
>
> Yes, you can create a Win32 window in a CALL_EXTERNAL .dll, complete
> with a window class and a runty WinProc to handle WM_CREATE and
> WM_DESTROY events that are generated when you create and destroy the
> window. In places in the Win32 hocus-pocus where I needed an instance,
> I used GetModuleHandle(NULL). I'd say, FWIW, that it's a testament to
> IDL's stability that one can get away with this sort of thing...
>
> And, the 'crash' that I was getting initially was due to how I was
> treating the WM_DESTROY event-- I called PostQuitMessage(0)-- which,
> correctly, forced IDL to quit.
>
> D'oh.
>
> And, not only that, but the .dll does the desired hardware-accelerated
> off-screen rendering!
>
> Matt Feinstein
>
> --
> There is no virtue in believing something that can be proved to be true.

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[Message index]

		Can a CALL_EXTERNAL .dll create a window? By: Matt Feinstein on Fri, 29 August 2003 08:37
		Re: Can a CALL_EXTERNAL .dll create a window? By: Matt Feinstein on Thu, 04 September 2003 05:27
		Re: Can a CALL_EXTERNAL .dll create a window? By: Rick Towler on Wed, 03 September 2003 12:37
		Re: Can a CALL_EXTERNAL .dll create a window? By: Matt Feinstein on Wed, 03 September 2003 11:02

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