What to make so that MCI_PLAY reproduced film in mode fullscreen however not" stretching" of picture on all screen and only centring it on centre of screen?

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mciSendCommand (m_mcideviceid, MCI_PLAY, MCI_MCIAVI_PLAY_FULLSCREEN, (DWORD) (MCI_DGV_PLAY_PARMS*) &play)
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