LispWorks CAPI User Guide > 4 Creating Common Windows > 4.5 Miscellaneous button elements

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4.5.2 Check buttons

Check buttons can be produced with the check-button element.

  1. Enter the following in a Listener:
(setq check (make-instance 'check-button  
                       :selection-callback 'hello
                       :retract-callback 'test-callback
                       :text "Button"))
(contain check)

Figure 4.6 A check button

Notice the use of :retract-callback in the example above, to specify a callback when the element is deselected.

Like push buttons, check buttons can be disabled by specifying :enabled nil .


LispWorks CAPI User Guide (Unix version) - 22 Dec 2009

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