NetNews Usenet Archive 1992 #19/NN_1992_19.iso/spool/comp/os/os2/programm/4647

Text File | 1992-09-01 | 1.7 KB | 38 lines

Newsgroups: comp.os.os2.programmer
Path: sparky!uunet!mcsun!sun4nl!dutrun!donau!alfred
From: [e-mail] (Alfred Kayser)
Subject: Re: Problem with WM_ACTIVATE.
Message-ID: <alfred.715377771@dutepp13>
Sender: [e-mail] (UseNet News System)
Nntp-Posting-Host: dutepp13.et.tudelft.nl
Organization: Delft University of Technology, Dept. of Electrical Engineering
References: <alfred.715353493@dutepp3> <[e-mail]>
Date: Tue, 1 Sep 1992 20:02:51 GMT
Lines: 25

[e-mail] (Dave Briccetti) writes:
>[e-mail] (Alfred Kayser) writes:
>: Help, I have a problem with a PM program. When I open a (WinCreateStdWindow)
>: standard window, but which is hidden, and I show it using
>: a WinShowWindow, PM sends me a WM_ACTIVATE message. So far so good,
>: I set the 'active' flag and returns FALSE. So far as is documented, but
>: PM crashes and gives a protection violation. Help I'm lost in PM!!!
>:
>Perhaps you could run the program under a debugger and find out exactly
>where you are crashing.
I did. But only the debugging version of PM did only run under 1.2

Anyway the problem is solved anyway. Somewhere in the window procedure
I converted the return value of the Default window proc into a 16 bits
integer, and that did wipe the segment part of some window pointer returned
by that procedure.

Apperently somewhere between 1.2 and 1.3 there is a difference in how
some messages return values...

Thanks for the answers, Alfred
--
-- Ir. Alfred Kayser. PACS, OS/2, TCP/IP. --- Email: [e-mail] --
-- CARDIT, Delft University of Technology ------------ Tel: [phone] --
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