DxViewer is a program exe, what do you mean you want to run that as a child?
Yes, it is. And I need that nice "viewer" features within my program. I need to load, view, zoom and twist a model. Exactly what DxViewer can do! Actually, I've already run DxViewer inside my application. I've added extern function into DxViewer project, changed settings from '.exe' application to dynamic lybrary and then just called that extern function from the library. As I said before it's worked, but probably I should create DxViewer's main dialog in a different way. Becouse it's the only part of the original code that I changed.