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MCI_FREEZE (VIDEO OVERLAY)
 
        This MCI command message freezes motion on the display. This
        command is part of the video overlay command set. The parameters
        and flags for this message vary according to the selected
        device.
 
Parameters
        DWORD dwFlags
            The following flags apply to all devices supporting
            MCI_FREEZE:
 
            MCI_NOTIFY
                Specifies that MCI should post the MM_MCINOTIFY message
                when this command completes. The window to receive this
                message is specified in the dwCallback field of the data
                structure identified by lpFreeze.
 
            MCI_WAIT
                Specifies that the freeze operation should finish before
                MCI returns control to the application.
 
            MCI_OVLY_RECT
                Specifies that the rc field of the data structure
                identified by lpFreeze contains a valid rectangle. If
                this flag is not specified, the device driver will
                freeze the entire frame.
 
        LPMCI_OVLY_RECT_PARMS lpFreeze
            Specifies a far pointer to a MCI_OVLY_RECT_PARMS data
            structure. (Devices with additional parameters might replace
            this data structure with a device-specific data structure.)
 
Return value
        Returns zero if successful. Otherwise, it returns an MCI error
        code.
 
See also
        MCI_UNFREEZE
 
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