This week I taught a class on video and DirectShow and sat down to prepare some demos. In this demo I show how to use the Video Mixing Render 9 (VMR9) in Windowless mode to render video on the Form of a Windows Forms application. As in my posts on MSXML I found that the smart pointers of comdef.h and comip.h really helped to clean up the code. Why, programming the VMR9 in C++ can be as elegant as C# ! You can find the complete source code here . High Level Design For this demo I started with the...