[cairo] Win32 Surface Mem increase and app crash

[曹志鹏]

I solved it.
Add cairo_surface_flush(surface) in the end.

在 2013-5-4，下午21:39，小帅猪 <caozp at qq.com> 写道：

> In MFC app, I add code in OnDraw();
> 
> {
>     cario_surface_t* surface = cairo_win32_surface_create(pDC->GetSafeHDC());
>     cairo_t* cr = cairo_create(surface);
>     //Draw something;
>     cairo_surface_destroy(surface);
>     cairo_destroy(cr);
> }
> 
> It works, but when redrawing like maxize window, the memory increase, in the end, the application crash.
> Is there any problem? Help me.
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