🚀 go-pugleaf

One think I can tell you, try to avoid TThread with VCL wherever you can. I 
had so many troubles with multiple TThreads and Canvas. After many many 
hours of work (with lock/unlocking etc.) I finally got it work. But then 
there was the problem with timing. At the end, I use TThread to run non- 
visual task and use timer to draw Canvas. Now it's working perfectly.

Phuoc Can HUA

On Tue, 23 Sep 2003 15:22:22 +0200, Wim Bekker <wim@bekker> wrote:

> Hi,
>
> Using a TThread it is not safe to use VCL components. But I'm wondering 
> what
> exactly isn't safe. Are the VCL properties at risk, or is the underlying
> windows structure not safe?
>
> For instance, is it possible to lock the canvas of a VCL object in a 
> thread
> and paint on it?
> Or is it possible to supply the windows handle to a thread to paint on 
> it?
> Or should this all be done in the main thread.
>
> I hope someone can give me some information about this.
>
> Wim
>
>
>
>



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