Subject: RE: Set/GetWindowLong doesn't seem work
From: [email-masked] (Karl Martin Syring)

9 Feb 1998 18:42:27 -0800
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Benny,
cbWndExtra is declared as an int in the MS header, so there is no space to 
reserve. Usually it it used as a pointer to the window specific data 
structures.
A possible reason for Daniels problems may an error in the declaration of the 
WNDCLASS structure. Perhaps he should download the real thing from the MS SDK 
....

Regard
Karl

-----Original Message-----
From:	Benjamin Riefenstahl [SMTP:[email-masked]]
Sent:	Monday, February 09, 1998 11:57 AM
To:	GNU-Win32 Mailing list
Subject:	Re: Set/GetWindowLong doesn't seem work

Hi Daniel,

Daniel Mironowicz wrote:
> SetWindowLong(hwnd, 0, (LONG)hEdit);
> And when i use GetWindowLong(hwnd, 0) to get edit handle I don't get it.

I think you forgot to reserve the space for that data. In the
initialization of the WNDCLASS struct for the DocWindow, do

    wnd.cbWndExtra = sizeof(LONG);

[]  <snip>

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