This property allows you to set or retrieve the width of the four borders of the active tab in a Tab-Control control. The property is a list of four values that specify the width in pixels of the top, left, bottom and right border respectively. The border width is applicable only to Tab-Controls with the Tab-Flat style and without the Accordion style.

Setting the property to -1 resets the borders.

Passing less than four values assumes that the remaining values are 0.

This property overrides the layout provided by the iscobol.gui.native_style (boolean) * setting for the control.

 

Example - Define a tab-control control where the active tab has a huge bottom border