MCI_FREEZE

See also MCI_UNFREEZE

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.

Returns zero if successful. Otherwise, it returns an MCI error code.

DWORD lParam1

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 member of the 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 member of the 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 lParam2

Specifies a far pointer to a MCI_OVLY_RECT_PARMS structure. (Devices with additional parameters might replace this structure with a device-specific structure.)