Problems relating to threading

[b0ssY]

Hi all,

I have a problem with threading here.

In my scenario, I need to do a very long operation after opening a file. Because of the long operation, it will cause the program to become "Not Responding" if the user clicks anywhere in the application. This is where my threading comes into place, replacing the troublesome "Not Responding" with a loading message in a form.

However, the problem is that at program load/startup, my program will instantiate objects of different classes before threading, and after the long operation in the threading, I seem not to be able to use those objects instantiated earlier on. What's wrong?

The error is: COM object that has been separated from its underlying RCW cannot be used.

What does this mean? Does anybody know?
Hope I can get some help here! Thanks.

b0ssY

[Shashi Sadasivan]

Hi,
I havent had a play around with threading, but have implemented Asynchronus method invocation.
have a look at this site

I have use asyncronus method invocations a bit, and seem to be pretty stable.

You might want to call these methodws and wait until all the methods haave finished, hopfully this way your objects should be returned correctly!

cheers!

[Plater]

purely, you are not supposed to use objects created in another thread.
They have designed methods to allow you to do so (as mentioned above).

But if you are only using the object in one thread, make sure it is created in that thread.