wxDC usage in a thread

[Harry]

Vadim,

I was asking myself whether this will not break existing applications, 
but I don't know wx well enough to answer.
In my case I have tested this by taking out all calls to SetBackground() 
and haven't noticed any change,
but this isn't a definitive proof.

Regards
Harry

Vadim Zeitlin wrote:
> On Wed, 06 Feb 2008 14:31:11 +0100 Harry <"harry dot news at armadillo dot fr"@a.mx.sunsite.dk> wrote:
>
> H> which specifies the following member initialization:
> H>         , m_backgroundBrush(*wxTRANSPARENT_BRUSH)
> H> 
> H> As the stock item wxTRANSPARENT_BRUSH is probably already allocated by 
> H> and used by
> H> the main thread, its concurrent usage from a thread may destroy its 
> H> reference counting,
> H> since reference counting isn't thread-safe.
> H> 
> H> I've solved the problem by replacing this member initialization by:
> H>         , m_backgroundBrush()
> H> 
> H> Does anybody have an objection to this, before I contribute it as a patch ?
>
>  Are you sure that this doesn't result in any changes in the behaviour?
> I.e. is invalid brush treated the same as transparent one everywhere? I
> don't think so but I might be missing something...
>
>  Regards,
> VZ
>
>