IZoom.UpLeftZooms
IZoom

property UpLeftZooms: WordBool;

Type Library
TeeChartx

Description
Gets or sets if the zoom object will apply "un-zoom" when the end user drags the mouse from bottom-right to up-left direction.

By default is True.

Setting to False means the end-user will not have any way to "undo" zoom using the mouse, so you'll need to provide another way to un-zoom.

When false, dragging a rectangle will always zoom, no matter in which direction has been dragged the rectangle.