TTMSFNCDataGridBeforeDrawHeaderGroupLevelEvent Event Type

Fired before a nesting-level drop strip is drawn in the visual grouping zone.

API unit family: TMSFNCDataGrid

Remarks

Level strips are only drawn while a column or chip is dragged over the zone and more than one chip exists. When ACanDraw is set to False, the after-draw event is not fired either.

Parameters

Name	Description
Sender	Grid that fired the event.
AGraphics	Graphics context to use for custom painting when ACanDraw is set to False.
ARect	Bounding rectangle of the level strip about to be drawn.
ALevel	Zero-based nesting level of the strip within the grouping bar.
AActive	True when the pointer is over this strip, meaning a drop would land on this level.
ACanDraw	True by default. Set to False to suppress the default strip rendering and paint entirely in this handler.