Class Xbp3State() Foundation
Class function of the Xbp3State class.
The Xbp3State class provides a dialog element that is similar to a checkbox but recognizes three states: selected, not selected and undefined. The current state is stored as a numeric value in the edit buffer of the three state button.
A three state button is always displayed on screen in two parts. It consists of a square where the current state of the three state button is visually displayed and a caption to the right next of the square. The character "x" is displayed in the square when a three state button is in the "selected" state. The appearance of the square cannot be altered. The caption displays the specified text which must be defined before the :create() method is called.
The instance variables in this group configure system resources. If changes are made to these values, they must either be made before the :create() method is executed or the :configure() method must be used to activate the changes.
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