CBindstatusCallback/OnProgress problems

I using the method HRESULT OnStartBinding( DWORD dwReserved, IBinding* pBinding );

to start an async download.  The class I am using has a progress control as one of its members, so that the handler OnProgress should allow for updating of the control to show current status of a particular download.

My problem is the progress bar never seems to update.  It is either empty, or when the download completes, I have to manually set it to complete.  So there is no movement.  The OnProgress handler seems always to return 0 (I'm assuming), although it is periodically activated.

Why could this be?  Is there something else that I need to register?

REgards

Oscar
ossentooAsked:
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chensuConnect With a Mentor Commented:
If you are using MFC:

Assume your progress bar is m_progress, call the following functions each time you want to update the status.
m_progress.Invalidate();
m_progress.UpdateWindow();

If you are not using MFC:

Assume the handle of your progress bar is hProgress, call the following functions each time you want to update the status.
InvalidateRect(hProgress, NULL, TRUE);
UpdateWindow(hProgress);

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chensuCommented:
Since you mentioned CBindStatusCallback in the question title, you must be using ATL. The above answer still applies.
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