Gets whether the current layout item is being or about to be resized by dragging the item's border with the mouse.
true if the current layout item is being or about to be resized; otherwise false.
In customization mode, the Layout Control allows an end-user to rearrange and resize layout items by using mouse operations. When a layout item is being or about to be resized it's cursor is changed to or . In this instance, the IsSizing property returns true. To determine whether the layout item is resized horizontally or vertically, see the BaseLayoutItemHitInfo.HitType property.