_AM_OVERLAY_NOTIFY_FLAGS enumeration (strmif.h)

The AM_OVERLAY_NOTIFY_FLAGS enumeration indicates what the overlay has changed, or is about to change.

Syntax

typedef enum _AM_OVERLAY_NOTIFY_FLAGS {
  AM_OVERLAY_NOTIFY_VISIBLE_CHANGE = 0x1,
  AM_OVERLAY_NOTIFY_SOURCE_CHANGE = 0x2,
  AM_OVERLAY_NOTIFY_DEST_CHANGE = 0x4
} ;

Constants

AM_OVERLAY_NOTIFY_VISIBLE_CHANGE Value: 0x1 The rectangle will be changed from visible to invisible, or vice-versa.
AM_OVERLAY_NOTIFY_SOURCE_CHANGE Value: 0x2 Source rectangle changed or changing.
AM_OVERLAY_NOTIFY_DEST_CHANGE Value: 0x4 Destination rectangle changed or changing.

Remarks

The IDDrawExclModeVideoCallback::OnUpdateOverlay method uses these flags to indicate how the overlay has changed, so that applications can take the necessary steps.

Requirements

Header	strmif.h (include Dshow.h)

See also

DirectShow Enumerated Types

IDDrawExclModeVideoCallback::OnUpdateOverlay