Integration with VC++

I am integrating a flash movie with my VC++ / MFC Dialog based application. In order to make integration possible I am using the activeX control flash.ocx which comes up with the class CShockwaveFlash.

Everything is fine. I want the background of the movie to be transparent. For that I even used this code.

Code:

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CShockwaveFlash m_flSample;

m_flSample.SetWMode ("Transparent");

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but still its showing white background on the flash control. Can anyone help me in solving this problem?

Thanks in advance