MCI_SAVE - Win32 Multimedia Programmer's Reference

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MCI_SAVE

The MCI_SAVE command saves the current file. Devices that modify files should not destroy the original copy until they receive the save message. Video-overlay and waveform-audio devices recognize this command. Although digital-video devices and MIDI sequencers also recognize this command, the MCIAVI and MCISEQ drivers do not implement it.

MCIERROR mciSendCommand(MCIDEVICEID wDeviceID, MCI_SAVE,
DWORD dwFlags, (DWORD) (LPMCI_SAVE_PARMS ) lpSave);

Parameters
wDeviceID
Device identifier of the MCI device that is to receive the command message.

dwFlags

MCI_NOTIFY, MCI_WAIT, or, for digital-video and VCR devices, MCI_TEST. For information about these flags, see The Wait, Notify, and Test Flags.

lpSave

Address of an MCI_SAVE_PARMS structure. (Devices with additional parameters might replace this structure with a device-specific structure.)

Return Values
Returns zero if successful or an error otherwise.

Remarks
This command is supported by devices that return TRUE when you call the MCI_GETDEVCAPS command with the MCI_GETDEVCAPS_CAN_SAVE flag.

The following additional flag applies to all devices supporting MCI_SAVE:

MCI_SAVE_FILE

The lpfilename member of the structure identified by lpSave contains an address of a buffer containing the destination filename.

The following additional flags are used with the digitalvideo device type:

MCI_DGV_RECT

The rc member of the structure identified by lpSave contains a valid rectangle. The rectangle specifies a region of the frame buffer that will be saved to the specified file. The first pair of coordinates specifies the upper left corner of the rectangle; the second pair specifies the width and height. Digital-video devices must use the MCI_CAPTURE command to capture the contents of the frame buffer. (Video-overlay devices should also use MCI_CAPTURE.) This flag is for compatibility with the existing MCI video-overlay command set.

MCI_DGV_SAVE_ABORT

Stops a save operation in progress. This must be the only flag present.

MCI_DGV_SAVE_KEEPRESERVE

Unused disk space left over from the original MCI_RESERVE command is not deallocated.

For digital-video devices, the lpSave parameter points to an MCI_DGV_SAVE_PARMS structure.

The following additional flag is used with the overlay device type:

MCI_OVLY_RECT

The rc member of the structure identified by lpSave contains a valid display rectangle indicating the area of the video buffer to save.

For video-overlay devices, the lpSave parameter points to an MCI_OVLY_SAVE_PARMS structure.

See Also
MCI_CAPTURE, MCI_DGV_SAVE_PARMS, MCI_GETDEVCAPS, MCI_OVLY_SAVE_PARMS, MCI_RESERVE, MCI_SAVE_PARMS

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