GPF in DoNotifyWindowAboutCaptureLost()

[Kevin Ollivier]

Hi Neil,

On May 1, 2008, at 10:09 AM, Neil Robinson wrote:

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> Vaclav Slavik wrote:
> | On Thu, 2008-05-01 at 16:07 +0100, Neil Robinson wrote:
> |> At no point do we capture the mouse in any of the code that is
> |> called up to the point where the crash occurs.
> |
> | Clearly, your app does capture the mouse somewhere, otherwise this
> | crash couldn't happen. It may be in some library code, but it does
> | happen, and it would be helpful to know _where_ is the window  
> holding
> | capture destroyed.
>
> This is not as easy to establish as you seem to assume. Our code is  
> not
> calling any of the capture code. It is also running wx in a completely
> separate thread (since wx requires that it be running things, which is
> something that we can't allow since otherwise our own threads would  
> halt).

Wait, are you saying you're not running wx in the application's main  
thread? If so, running wx inside a thread is not supported not just by  
wx, but by most (all?) of the underlying native toolkits it uses, and  
will definitely lead to a lot of strange errors caused by non- 
threadsafe code crossing threads. (invalid pointers being a prime  
example)

Regards,

Kevin