ITChart.OnDragMarksToolDraggingMark
ITChart

property OnDragMarksToolDraggingMark: TTChartOnDragMarksToolDraggingMark;

Type Library
TeeChartx

Description
Event called when the end user is moving the mouse dragging a mark.

You can use the chart OnMouseDown and OnMouseUp events to recognize when the end user starts and finishes a dragging operation.