Re: Cairo and wxWidgets Crash

Hi,

28-01-2014 03:26 tarihinde, WC Black yazdı:
> I am writing an app using Cairo and wxWidgets. There is an odd behavior
> that happens in Cairo 1.12.16 that did not happen when I compiled with
> previous Cairo version, namely the ones precompiled in gtk+ bundle 3.2.6
> I believe.
>
> When I modify the path data the strange behavior arises where the cairo
> object will cover up the wxDC drawn nodes and will not appear to draw on
> the context outside of the set device origins. Occasionally when I drag
> the object outside of the device origin bounds it will crash. I've
> provided a link to the call stack along with a link to the screenshot of
> the weird behavior.
>
> Thanks.
>
>
> Cairo version: cairo 1.12.16
> Operating System: Windows 7
> Compiler: MS VC
>
> The following is a link to the call stack after a crash:
> http://pastebin.com/raw.php?i=VwiVaTuZ
>
> The following is a link to the image of the weird behavior:
> http://i.imgur.com/9SrCACx.png
>


Did you apply the attached patch?


--
Regards,
Hakki Dogusan
http://www.dynaset.org/dogusanh

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--- cairo-win32-display-surface.c.orig	2013-08-26 18:07:20.000000000 +0300
+++ cairo-win32-display-surface.c	2013-09-12 13:16:20.000000000 +0300
@@ -455,17 +455,17 @@
 	surface->fallback =
 	    _cairo_win32_display_surface_create_for_dc (surface->win32.dc,
 							surface->win32.format,
-							surface->win32.extents.width,
-							surface->win32.extents.height);
+							surface->win32.extents.x + surface->win32.extents.width,
+							surface->win32.extents.y + surface->win32.extents.height);
 	if (unlikely (status = surface->fallback->status))
 	    goto err;
 
 	if (!BitBlt (to_win32_surface(surface->fallback)->dc,
-		     0, 0,
+		     surface->win32.extents.x, surface->win32.extents.y,
 		     surface->win32.extents.width,
 		     surface->win32.extents.height,
 		     surface->win32.dc,
-		     0, 0,
+		     surface->win32.extents.x, surface->win32.extents.y,
 		     SRCCOPY)) {
 	    status = _cairo_error (CAIRO_STATUS_DEVICE_ERROR);
 	    goto err;