I have implemented a slider in my application with MFC. slider has range 0 to RAND_MAX. it currently jumps with 655 units of steps with mouse wheel. 

can some body tell me how I can set slider increment decrement with mouse wheel by just one unit

When I started game engine development, many thought it was impossible for one person to build a game engine. But I proved that I could build a game engine with an old computer without a budget. Of course, there is still a lot of work to be done.

Vanda Engine is a free and open source game engine fo…

You could create a child window with its own message loop and new thread.

It should work. Maybe easier way to create such renderer is development of DirectX functionality in the raw Windows API, but the parent could still be the MFC type.