Set Parent for 3rd party application.

Hello,

I have a requirement where 3rd party CAD application should get docked inside my win form application.

For this I am using SetParent() and SetWindowPos() methods from user32.dll using p/invoke.

All arguments are passed correctly and method status is also true after execution , but CAD application window still remains outside winform. I tried same code for other sample software's where it worked well.

What might be wrong with CAD application due to which it cannot be docked inside winform?

Thanks