show a form from a thread

[deviranir]

Hi,

I am developing a desktop chat application using vb.net.
My design is as follows :

1. Have a login form
2. Have a contacts form
3. Have a chat form

The chat form should be opened at runtime depending upon my chat server response. I should always listen for the response from the server and open the form.
I written a function which will listen for the response and trying a open the chat form. I am calling this function in a thread. I always get the error that i cannot open a form from the thread. I get the folloeing error.

ActiveX control '<GUID>' cannot be instantiated because the current thread is not in a single-threaded apartment.

How can i solve this.

Your help is very much required.

Thanks,
Dev.

[Frinavale]

I think I know what's happening: it's how you are calling the function in the thread. You need to reorganize your application so that it uses a Single-Thread Apartment for your Chat window.

What language are you using to implement your solution?

-Frinny