Re: StretchDIBits

[Dmitry Timoshkov]

 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.