Generic function
Sets the function invoked when the cancel button is clicked in the specified dialog.
dialog-cancel-callback-setter callback dialog => callback
false-or(<command>, <function>). Default value: cancel-dialog.
<dialog-frame>.
false-or(<command>, <function>).
duim-frames
duim-frames
Sets the function invoked when the cancel button is clicked in dialog.
dialog-cancel-button, page 750
dialog-cancel-button-setter, page 751