[VB.NET 2003] Thread and CallBack

[edid]

Hi,
I use callkack function for webcam capture (VideoStream).
A class contains all work for one camera. When callback function is raised, then class raises an event.
I want to use 2 cameras, so 2 classes instances. The 2 cameras use the same device (Microsoft WDM Image Capture).
The fact is that my first callback stops when the 2nd one is initialized.
I could understand this but I'm able to run twice my Exe and both work fine...
so I think I could have 2 threads and 2 callback in the same Exe, but... I don't find how.
Any idea?
Thanks.

[Edneeis]

Huh? You should show some code. It sounds like you are overwriting your first handler with the second one instead of adding another handler. Look up the help on AddHandler.

[edid]

Thanks for your answer.
I 've just solved my problem. I have made cleaner threads...
Is there a nice way to maintain a thread running?
I use
Do
Application.DoEvents
Loop Until Condition
But I not very proud of it...

[Edneeis]

Why would you keep a thread running? The way you are doing it will consume a lot of resources. It would be much more efficent if you used a timer although it really depends on what you are using the thread for. What are you using the thread for?