Position mouse in external application

Hello, I am trying to position the mouse in an external application relative to that application's screen coordinates.

I can move the mouse relative to my application's x,y position like this:

Cursor.Position = this.PointToScreen(new Point(100, 100));


I have the handle to the external application but I do not know what to do with that handle to get the mouse coordinates relative to that application. Thank you!

Are you still even receiving mouse events when the cursor is outside of your window? You are not supposed to. Check this out. It may be more what you are wanting to do.