method Bars.RemoveShapeCorner (Key as Variant)
Removes a custom shape corner.

   Key as Variant A long expression that indicates the key of the shape being removed.  
Use the RemoveShapeCorner property to remove a shape corner being added using the AddShapeCorner method. Use the StartShape and EndShape properties to define the start and end parts of the bar using custom shapes. Use the Images or ReplaceIcon method to update the list of control's icons. The control includes a list of predefined shapes like shown in the ShapeCornerEnum type.