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

[Richard Stallman]

    I have never seen such a functionality in a *tool-bar*. But buttons
    like these are common in "media players" of all kinds, where the
    buttons are often part of some "cool" or "groovy" GUI. I would not
    expect a tool-bar button to do that, but that's just me.

When Emacs has a media-player mode, we want it to have such buttons.

So, is it better for these buttons to appear in the buffer itself,
or in the tool bar?  Better from a UI standpoint, that is.