[Ttk]'s [menubutton] [widget].
    :   http://www.tcl.tk/man/tcl8.5/TkCmd/ttk_menubutton.htm

----

[jnc] To invoke a menu button (or almost any other widget that takes a `-text` and `-underline` option) by a keystroke you can:

  event generate $widget <<Invoke>>

Such as:

  bind <Alt-f> . {event generate .menuButton <<Invoke>>}

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<<discussion>>Alignment question

[HaO] 2010-11-16 Is there any possibility to center-align the menu button text and image ?
This would make the following example nicer (on Windows Vista classic theme):

[http://wiki.tcl.tk/_repo/images/align_toolbuttons.png]

("Laden" has nothing to do with the person, it is German for "Load (Module in this case)")

Labels and Images are left-aligned.

Code fragment (not that of the screenshot):

======
% pack [ttk::menubutton .t1 -text abcabcabc] -fill x
% pack [ttk::menubutton .t2 -text a] -fill x
======

Style investigation:
======
% ttk::style layout TMenubutton
Menubutton.border -sticky nswe -children {Menubutton.focus -sticky
nswe -children {Menubutton.indicator -side right -sticky {}
Menubutton.padding -expand 1 -sticky we -children {Menubutton.label -
side left -sticky {}}}}
======

I think, the issue is the last part. "-side left -sticky {}" which
should be changed to "-sticky news"
Is this possible in an easy manner ?

---
Even harder, I want to have it with Toolbutton style:

======
% pack [ttk::menubutton .t1 -text abcabcabc -style Toolbutton] -fill x
% pack [ttk::menubutton .t2 -text a -style Toolbutton] -fill x
======

How to align the labels "centered ?"

---
Style investigation:
======
% ttk::style layout Toolbutton
Toolbutton.border -sticky nswe -children {Toolbutton.padding -sticky
nswe -children {Toolbutton.label -sticky nswe}}
======

Here, the label has -sticky "nswe". So try some label-options:
======
% ttk::style configure Toolbutton.label -justify center -anchor center
% pack [ttk::menubutton .t3 -text a -style Toolbutton] -fill x
======

But stil left-aligned...

But
======
% ttk::style theme use clam
======
and the Toolbutton styled menubuttons are center-aligned.

Why is a normal Button centered and a MenuButton left-aligned ? 

If you have an answer feel free to remove all this and replace it by more helpful stuff.
I have posted this on c.l.t. with no answer and solved it by putting the label to the right of the icon so it looks pretty when left-aligned.


----

[EG]: Remove the "-side left" and add "-sticky ns".

For plain ttk::menubuttons:

======
% ttk::style layout TMenubutton {
  Menubutton.border -sticky nswe -children {
    Menubutton.focus -sticky nswe -children {
      Menubutton.indicator -side right -sticky {}
      Menubutton.padding -expand 1 -sticky we -children {
        Menubutton.label -sticky ns
      }
    }
  }
}
======

and for the Toolbutton styled ones:

======
% ttk::style layout Toolbutton {
  Toolbutton.border -sticky nswe -children {
    Toolbutton.padding -sticky nswe -children {
      Toolbutton.label -sticky ns
    }
  }
}
======

<<discussion>>

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<<discussion>> Post also with right mouse-click
[HaO] 2011-05-10 To post the menu also on the right mouseclick, one may generate the left events also on the right click events:
======
bind TMenubutton <ButtonPress-3>          { event generate %W <ButtonPress-1> }
bind TMenubutton <ButtonRelease-3>        { event generate %W <ButtonRelease-1> }
======
<<discussion>>
----
<<discussion>> Open issue: post by mouse-over
[HaO] 2011-05-10 I tried to post the menu if the mouse is over the menubutton.

There is no issue to post the menu when the mouse is over by:
======
if {[tk windowingsystem] eq "x11"} {
    bind TMenubutton <Enter>          { ttk::menubutton::Pulldown %W }
    bind TMenubutton <Leave>        { ttk::menubutton::TransferGrab %W }
} else {
    bind TMenubutton <Enter>  \
        { %W instate !disabled {%W state active ;\
        %W state pressed ;\
        ttk::menubutton::Popdown %W }}
    bind TMenubutton <Leave>  \
        { %W state !active ; %W state !pressed }
}
======
Windows issues:
The menu is well posted and gets a local grab which may only be unposted by clicking outside the menu.

With two menubuttons, the following happens:

   * A menu is posted when the first Menubutton gets focus
   * When the second gets focus, its menu is not posted, because the first still owns the grab
<<discussion>>

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!!!!!!
%| [Category Widget] |%
!!!!!!