bar-thickness

Arguments: split-bar

Returns the bar-thickness property of a split-bar widget. The value may be set at creation time by passing the :bar-thickness initarg to make-instance, or any time later by call (setf bar-thickness).

This is the actual thickness of the split-bar widget, measured in pixels. It determines the size of the area in which the user can click the mouse to initiate a drag. It should be thick enough to allow the user to easily click on it. The value should be a positive integer. The default value is 9. The value may be set at creation time by passing the :bar-thickness initarg to make-instance, or any time later by call (setf bar-thickness).

The visible bar will be drawn at this thickness when it is not being dragged, unless the draw-at-dragging-thickness property is true. The thickness of the visible bar while dragging is specified with the dragging-thickness property.

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Created 2019.8.20.