All Manuals > Common Lisp Interface Manager 2.0 User's Guide > Chapter 10 Panes and Gadgets > 10.5 Gadgets > 10.5.3 Abstract Gadget Classes

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10.5.3.4 The Push-Button Gadget

The push-button gadget provides press-to-activate switch behavior.

arm-callback will be invoked when the push button becomes armed (such as when the pointer moves into it, or a pointer button is pressed over it). When the button is actually activated (by releasing the pointer button over it), activate-callback will be invoked. Finally, disarm-callback will be invoked after activate-callback , or when the pointer is moved outside of the button.

push-button

Summary: The class that implements an abstract push button. It is a subclass of active-gadget and labelled-gadget-mixin .

:show-as-default

Summary: This initializes the "show as default" property for the gadget.

push-button-show-as-default[Generic Function]

Arguments: push-button

Summary: Returns the "show as default" property for the push button gadget. When t , the push button will be drawn with a heavy border, which indicates that this button is the "default operation."

push-button-pane

Summary: The class that implements a portable push button; a subclass of push-button .


Common Lisp Interface Manager 2.0 User's Guide - 7 Aug 2017

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