on-set-focus

Arguments: dialog-item

Returns the value of the on-set-focus event property of dialog-item. The value of the on-set-focus property should be a function object or a function name (a symbol naming a function). This function is called by the default set-focus-event method when the keyboard focus moves to dialog-item. This function should accept one argument, the dialog-item. The value may be nil if no function need be called.

See also on-kill-focus.

See cg-events.htm for information about event handling in Common Graphics.

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Created 2019.8.20.