On 1/13/22 12:38 PM 'Mark' via fltk.general wrote:
I have a "history" menubutton that I want to enable when the menu has
items and disable when it doesn't.
Just to make sure we agree in what we're saying: In FLTK terminology
this would be a menu item (Fl_Menu_Item) and the "items" you're talking
about (the list of recent files, below) would be submenu items. There's
also a widget called Fl_Menu_Button but that's a button that can pop up
a menu when clicked.
I assume you're implementing a normal menu (Fl_Menu or Fl_Menu_Bar) with
a submenu of recent files.
It will start out with no entries and gradually they'll be added
depending on what the user does. Similarly, I have other buttons which
should be enabled/disabled depending on context.
Again, "buttons" = Fl_Menu_Items?
I've tried setting the trigger to none but that didn't do it. I also
tried calling deactivate but that didn't stop clicking it from working.
"Setting the trigger" is not a FLTK term. What exactly did you try?
Exact code (statements, not full program) would be much more helpful so
we can better help you.
That said, you must disable the particular Fl_Menu_Item which is
So maybe fltk has a way of doing this using terminology/functions I'm
unfamiliar with? (I'm pretty new to fltk; I'm much more familiar with
Tk, Qt, and wxWidgets.)
The terminology used in such cases is usually "activate" and
"deactivate" (widgets/buttons, menu items, whatever). Sometimes enable
and disable is used as well.
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