Re: Puzzle about ExtSelectClipRgn?

[Changhui Liu]

Dear Thomas:
It should be :
TRACE("After ExtSelectClipRgn:%s\n", wine_dbgstr_rect(&dstbox) );
I want make the output clear so I remove the  wine_dbgstr_rect(&srcbox), but I forgot remove the second %s. 
Thank you.
 

 
------------------ Original ------------------
From:  "Thomas Faber"<thomas.faber(a)reactos.org>;
Date:  Mon, Dec 8, 2014 04:05 AM
To:  "Changhui Liu"<liuchanghui(a)linuxdeepin.com>; 
Cc:  "Sebastian Lackner"<sebastian(a)fds-team.de>; "Vincent Povirk"<madewokherd(a)gmail.com>; "wine-devel"<wine-devel(a)winehq.org>; "洪谦"<qhong(a)codeweavers.com>; 
Subject:  Re: Puzzle about ExtSelectClipRgn?

 
On 2014-12-03 03:36, Changhui Liu wrote:
> Dear all, I test this code :
>
> void test (HDC hdc, HRGN hregion)
> {
>      RECT srcbox;
>      RECT dstbox;
>
> GetClipBox(hdc, &dstbox);
>      GetRgnBox(hregion, &srcbox);
>
> TRACE("Before ExtSelectClipRgn:%s,%s\n",
>              wine_dbgstr_rect(&srcbox), wine_dbgstr_rect(&dstbox) );
>
> ExtSelectClipRgn(hdc, hregion, RGN_AND );
>
> GetClipBox(graphics->hdc,&dstbox);
>
> TRACE("After ExtSelectClipRgn:%s,%s\n", wine_dbgstr_rect(&dstbox) );

The second %s here will print random memory.
> }
>
> It output in wine is :
> Before ExtSelectClipRgn:(693,5)-(763,28),(693,5)-(763,28)
> After ExtSelectClipRgn:(693,5)-(693,5)
>
> But I think it should be output:
> Before ExtSelectClipRgn:(693,5)-(763,28),(693,5)-(763,28)
> After ExtSelectClipRgn:(693,5)-(763,28)
>
> Where is my understanding mistake, or is it a bug in ExtSelectClipRgn?

------------------
Regards.