Re: Custom Control

I have program based on CFormView that has a custom control as one of its
controls. The custom control is based on a class called COpenGLWnd which
is
derived from CWnd for displaying in Open GL. I have added mouse events to
the COpenGLWnd class for doing rotations and translations. I receive all
of
the mouse events fine (LR mouse click and mouse move) except for the
OnMouseWheel event which I never receive. Somehow this event seems to
become
lost. I have seen this problem before when I was using scroll bars and I
had
to make sure that I had proper focus. But now I'm not using any scroll
bars.

This is my declaration:

afx_msg BOOL OnMouseWheel (UINT nFlags, short zDelta, CPoint pt);

And message map:

BEGIN_MESSAGE_MAP(COpenGLWnd, CWnd)
    ON_WM_LBUTTONDOWN()
    etc
    ON_WM_MOUSEWHEEL()
END_MESSAGE_MAP()

Is there anything special I need to do for the mouse wheel callback, or
can
anyone see anything wrong?

Thank you.