StretchDIBits
Dmitry Timoshkov
dmitry at baikal.ru
Fri Nov 8 22:00:42 CST 2002
<steve.lustbader at philips.com> wrote:
> According to my quick test on WinXP, StretchDIBits returns 0 if
> lpBits or lpBitsInfo is NULL. Wine currently produces an unhandled
> exception if lpBitsInfo is null.
>
> ChangeLog:
> Prevent StretchDIBits from producing an unhandled exception if
> lpBitsInfo is null.
>
> (See attached file: stretchdibits.diff)
> --- objects/dib.c 23 Oct 2002 18:50:10 -0000 1.70
> +++ objects/dib.c 8 Nov 2002 18:49:19 -0000
> @@ -157,6 +157,9 @@
> DC *dc = DC_GetDCUpdate( hdc );
> if(!dc) return FALSE;
> + if (!bits || !info)
> + return 0;
You have to verify parameters before DC pointer and GDI lock are
grabbed, otherwise we'll get a nice dead lock.
--
Dmitry.
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