tkinter button state = DISABLED

[Hamilton, William]

> From: Eric Brunel
On Thu, 17 May 2007 09:30:57 +0200, Hendrik van Rooyen
> <mail at microcorp.co.za> wrote:
> >  "Gabriel Genellina" <gagsl-py2 at yahoo.com.ar> wrote:
> >> En Wed, 16 May 2007 03:22:17 -0300, Hendrik van Rooyen
> >>> I have never seen this working in Tkinter, unless the button was
> >>> pressed
> >>> on the
> >>> widget
> >>> in question - and worse, once you have clicked down on a ButtonRelease
> >>> binding
> >>> you can move the mouse pointer anywhere you like, even out of the
> >>> application
> >>> and when you release it, the bound function is called...
> >>>
> >>> Its either a bug or a feature, I don't know.
> >>
> >> Uhmm... I'm not sure I understand you completely. I only said that the
> >> "command" is fired only when the mouse button is pressed on the widget,
> >> AND released inside the same widget. If both events don't happen in the
> >> same widget, "command" won't fire. Maybe you are saying the same
> >> thing...
> >> anyway I'm not a Tk expert.
> >
> > No command is ok and you have described it right - its ButtonRelease
> that
> > seems broken to me
> 
> Apparently, this behaviour is the intended one, at least for buttons; see:
> http://www.tcl.tk/man/tcl8.4/TkCmd/bind.htm#M11
> 
> As for the question "why?", maybe you should ask it on the c.l.tcl
> newsgroup?

The difference between bind and the button's command parameter makes sense
to me.  You'd use bind to create something like a right-click menu, where
you want the same thing to happen whether the button is disabled or not.
You use the command parameter when you care about the state of the button.


--
-Bill Hamilton