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Home GeoPack GeoMap Class TGeoMap Events OnLandMarkAction
See also: AddLandMark, LandmarkData, RemoveLandMark, NumLandMarks, OnDataRendered, OnMapImageRequest, LMRandomDisplayThreshold 

OnLandMarkAction

Unit:SDL_geomap
Class:TGeoMap
Declaration: property OnLandMarkAction: TLandMarkActionEvent;
{TLandMarkActionEvent = procedure (Sender: TObject; var Allowed: boolean; const Action: TLandMarkAction; const LandMarkData: TLandMark) of object;}

The event OnLandMarkAction is triggered when a landmark is about to be added or removed from the map by either the method RemoveLandmark, RemoveLastLandMark, or AddLandMark. This event allows you to abort the landmark operation by setting the Allowed parameter to FALSE. A typical application of the OnLandMarkAction event would be to prevent the setting of landmarks in certain areas.

Please note that OnLandMarkAction is triggered for each single landmark if several landmarks are to be removed.

Last Update: 2023-Dec-13