Re: [ros-dev] [ros-diffs] [jimtabor] 73475: [Win32SS|RTL] - Fix clipping for Draw Text. Inspired by Katayama Hirofumi MZ patch and ComCtl32/RichEd20/UxThmems. See CORE-2201.

[Thomas Faber]

On 2016-12-22 11:39, jimtabor(a)svn.reactos.org wrote:
>   +#ifndef _WIN32K_ ///// Fix CORE-2201.
>  +    if (!(flags & DT_NOCLIP) )
>  +    {
>  +       int hasClip;
>  +       hrgn = CreateRectRgn(0,0,0,0);
>  +       if (hrgn)
>  +       {
>  +          hasClip = GetClipRgn(hdc, hrgn);
>  +          // If the region to be retrieved is NULL, the return value is 0.
>  +          if (hasClip != 1)
>  +          {
>  +             DeleteObject(hrgn);
>  +             hrgn = NULL;
>  +          }
>  +          IntersectClipRect(hdc, rect->left, rect->top, rect->right,
> rect->bottom);
>  +       }
>  +    }
>  +#else
>  +    if (!(flags & DT_NOCLIP) )
>  +    {
>  +       int hasClip;
>  +       hrgn = NtGdiCreateRectRgn(0,0,0,0);
>  +       if (hrgn)
>  +       {
>  +          hasClip = NtGdiGetRandomRgn(hdc, hrgn, CLIPRGN);
>  +          if (hasClip != 1)
>  +          {
>  +             GreDeleteObject(hrgn);
>  +             hrgn = NULL;
>  +          }
>  +          NtGdiIntersectClipRect(hdc, rect->left, rect->top, rect->right,
> rect->bottom);
>  +       }
>  +    }
>  +#endif ///// 
Any particular reason not to simply do the NtGdi call in both user
and kernel? Looks like they should be doing the exact same thing.