Re: Binding a command to the down-event of a toolbar button

[Richard Stallman]

    > You're missing the point.  You're proposing we implement the capacity
    > to provide a certain kind of GUI feature.  Before we do that, I want
    > to know whether users expect or want that kind of feature in GUIs.  If
    > they don't, let's save the trouble of writing and maintaining code to
    > implement it.

    Yes, click and drag and mouse-2, mouse-3 are used in UIs.

That is not the question.

The question is whether other UIs make a distinction of down and up
clicks on tool bars.  And what UI design recommendations say about it.