>Hi Everybody,
>
>How may I programmatically change the size of a control in a Dialog Box in Visual C++?

CWnd::SetWindowPos() with SWP_NOMOVE flag or CWnd::MoveWindow().
For example:
GetDlgItem(IDC_SOMECONTROL)->SetWindowPos(NULL,0,0,100,200,SWP_NOMOVE|SWP_NOZORDER);