Restores motion to an area of the video buffer frozen with MCI_FREEZE. This command is part of the video overlay command set. The parameters and flags for this message vary according to the selected device.
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 member of the structure identified by lParam2. |
MCI_WAIT | Specifies that the unfreeze operation should finish before MCI returns control to the application. |
MCI_OVLY_RECT | Specifies that the rc member of the structure identified by lParam2 contains a valid display rectangle. This is a required parameter. |
MCI_FREEZE