gtk:text-view-border-window-size (view wtype)

view -- a gtk:text-view widget
wtype -- a value of the gtk:text-window-type enumeration
size -- an integer with the width or height of the window

Accessor of the border window size of the text view. The gtk:text-view-border-window-size function gets the width of the specified border window. The (setf gtk:text-view-border-window-size) function sets the width of the :left or :right size of the border window, or the height of the :top or :bottom size of the border window.

Automatically destroys the corresponding window if the size is set to 0, and creates the window if the size is set to non-zero. This function can only be used for the "border windows", it does not work with the :widget, :text, or :private text windows.