is that for GLUT programing in vc/c++ void main(arg..) or int main(arg..) is necessary.

I want to open a GLUT window when clicked on a MenuItem of Dialog Based Interface's Menu.
I am using vc++ 6.0 ..

what code has to be written in OnButtonClick()(arbit name just for explaining)to open a GLUT window or is it that it is not possible.