Re: help gwl_wndproc

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#2455

From: Richard Janssen
Date: Mon, 04 Jan 1993 13:41

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Here's the real tough cookie in subclassing:

Can you do the same for standard Windows controls??
And if so, please tell me?? 

It says in the Windows SDK docs that you cannot use
GWC_WNDPROC with SetWindowLong for standard controls.
However, usage of GWL_WNDPROC is not mentioned!!

Still, doing a GetWindowLong & SetWindowLong for a standard
control gives a General Protection Fault when calling the
'old' window procedure through CallWindowProc.

Does anybody have any clues for solving this problem??

Richard Janssen
R.H.P.Janssen@research.ptt.nl

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Newsgroups: comp.os.ms-windows.programmer.misc
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sun4nl!spider.research.ptt.nl!sun032!janssen
From: janssen@sun032.research.ptt.nl (Richard Janssen)
Subject: Re: help gwl_wndproc
Message-ID: <1993Jan4.134132.7387@spider.research.ptt.nl>
Summary: Doing a "subclass" for standard controls.
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Organization: PTT Research, Groningen, the Netherlands
References: <1993Jan3.3151.3082@dosgate>
Distribution: comp
Date: Mon, 4 Jan 1993 13:41:32 GMT
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