




 
You can implement tooltips for a 
toolbar-button
 exactly as for collections and so on as described in Tooltips for collections, elements and menu items. Supply 
help-key
 for the 
toolbar-button
 and a 
help-callback
 for the 
interface
. For an example of this see 
examples/capi/elements/toolbar.lisp
. 
However, if your 
toolbar-button
s are grouped in a 
toolbar-component
 it is simpler to supply the 
:tooltips
 initarg. 
tooltips
 should be a list containing a string giving the tooltip text of each button in the component. For an example of this see 
examples/capi/applications/simple-symbol-browser.lisp
.
CAPI User Guide (Unix version) - 30 Aug 2011