Viewport rendering problem, DirectX

[Bobbysl]

I have my directX window divided in to 4. I had a problem of only one viewport rendering and showing the new render. For that my code structure was

Begin scene
Set viewport 1
Set viewport 2
Set viewport 3
Set viewport 4
End scene

This structure only renders the 4th viewport during run time. The other three renders on to screen with the previous render still on screen

So i changed the structure to:


Begin scene
Set viewport 1
End scene
Begin scene
Set viewport 2
End scene
Begin scene
Set viewport 3
End scene
Begin scene
Set viewport 4
End scene

Using this structure the viewports work as the should. But the object on screen keeps blinking. I guess thats becaues i start and stop the rendering.

I you please tell me how to fix the problem?
Thanks