Dear all,

I'm doing a project using Qt MDI, which contains multiple child windows inherited from QMdiSubWindow. I added a child widget (QVTKWidget) to a child window. When I moved the child window, the child widget seemed to stay at its original position w.r.t. the mainframe. What could be the possible reason for that? Thanks a lot.

P.S.:
My OS: Mac OS 10.5.7
Qt version: 4.5.1