I'm writing an Office Add-in in C#.
Using Automation, I get the Handle of the main window of the application in which the Add-in is running (in my case, PowerPoint).
I can then navigate the Child windows, hook into message loops and can create additional Windows using the NativeWindow class
I would like to be able to create a .NET control and position it into the application. The problem is that I have non-.NET handles and when I try to call Control.FromHandle(handle), it returns null. Then I can't assign a parent to my .NET control so it's not displayed.
So How do I assign a .NET control to a non-.NET parent window ?