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AM_OVERLAY_NOTIFY_FLAGS enumeration

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

Syntax


enum _AM_OVERLAY_NOTIFY_FLAGS {  AM_OVERLAY_NOTIFY_VISIBLE_CHANGE  = 0x00000001, 
  AM_OVERLAY_NOTIFY_SOURCE_CHANGE   = 0x00000002, 
  AM_OVERLAY_NOTIFY_DEST_CHANGE     = 0x00000004 

};

Constants

AM_OVERLAY_NOTIFY_VISIBLE_CHANGE

The rectangle will be changed from visible to invisible, or vice-versa.

AM_OVERLAY_NOTIFY_SOURCE_CHANGE

Source rectangle changed or changing.

AM_OVERLAY_NOTIFY_DEST_CHANGE

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

 

 

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