Arguments: button-widget
Changes which button on a dialog is invoked by pressing the ENTER key
(i.e. the default button). button must be an
instance of class button already on a dialog (and it
is that dialog whose default button is changed). An error is signaled
if button is not on a dialog. The new default button will be drawn
with a thick black border.
If a button of class default-button exists on the
dialog, it will be the initial default button. This function is used
to change the default button dynamically.
Note: following Windows environment practice, if the user gives the keyboard focus to any push button (the keyboard focus is shown by a thin dotted line about the button), that button is invoked by pressing ENTER or the Space Bar. This is regardless of whether it is the default button or not. ENTER will again invoke the default button when the keyboard focus moves away from any button.
Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.