^{TTChartOnDragMarksToolDraggingMark}

<sup>type TTChartOnDragMarksToolDraggingMark = procedure(ASender: TObject; Index: Integer; Button: EMouseButton; Shift: EShiftState; X, Y: Integer) of object;

Type Library
TeeChartx

Description
Event called when the end user is moving the mouse dragging a mark.</sup>

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