MCI_DGV_MONITOR_PARMS structure (digitalv.h)

The MCI_DGV_MONITOR_PARMS structure contains parameters for the MCI_MONITOR command.

Syntax

typedef struct {
  DWORD_PTR dwCallback;
  DWORD     dwSource;
  DWORD     dwMethod;
} MCI_DGV_MONITOR_PARMS;

Members

dwCallback

The low-order word specifies a window handle used for the MCI_NOTIFY flag.

dwSource

One of the following flags for the monitor source:

Name	Description
MCI_DGV_MONITOR_FILE	The workspace is the presentation source. (This is the default source.) If this flag is used during recording, the recording pauses. If the MCI_MONITOR command changes the presentation source, recording or playing stops and the current position is the value returned by the MCI_STATUS command for the start position.
MCI_DGV_MONITOR_INPUT	The external input is the presentation source. Playback is paused before the input is selected. If the MCI_SETVIDEO command has been enabled using the MCI_SET_ON flag, this flag displays a default hidden window. Device drivers might limit what other device instances can do while monitoring input.

dwMethod

One of the following constants for the type of monitoring:

Name	Description
MCI_DGV_METHOD_DIRECT	The device should be configured for optimum display quality during monitoring. Direct monitoring might be incompatible with motion-video recording.
MCI_DGV_METHOD_POST	The device should show the external input after compression. Post monitoring supports motion-video recording.
MCI_DGV_METHOD_PRE	The device should show the external input prior to compression.

Remarks

When assigning data to the members of this structure, set the corresponding flags in the fdwCommand parameter of the mciSendCommand function to validate the members.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	digitalv.h

See also

MCI

MCI Structures

MCI_MONITOR

MCI_SETVIDEO

MCI_STATUS

mciSendCommand