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Gtk::OptionMenu

class Gtk::OptionMenu

A Gtk::OptionMenu is a widget that allows the user to choose from a list of valid choices. The Gtk::OptionMenu displays the selected choice. When activated the Gtk::OptionMenu displays a popup Gtk::Menu which allows the user to make a new choice.

Using a Gtk::OptionMenu is simple; build a Gtk::Menu, by calling Gtk::Menu.new, then appending menu items to it with Gtk::MenuShell#append. Set that menu on the option menu with Gtk::OptionMenu#menu=. Set the selected menu item with Gtk::OptionMenu#history=; connect to the "changed" signal on the option menu; in the "changed" signal, check the new selected menu item with Gtk::OptionMenu#history.

Instance Methods

menu
Returns the Gtk::Menu associated with the Gtk::OptionMenu.
menu=(menu)
Provides the Gtk::Menu that is popped up to allow the user to choose a new value. You should provide a simple menu avoiding the use of tearoff menu items, submenus, and accelerators.
set_menu(menu)
Same as Gtk::OptionMenu#menu=.
remove_menu
Removes the menu from the option menu.
  • Returns: self
history
Retrieves the index of the currently selected menu item. The menu items are numbered from top to bottom, starting with 0.
  • Returns: index of the selected menu item, or -1 if there are no menu items
history=(index)
Selects the menu item specified by index making it the newly selected value for the option menu.
  • index: the index of the menu item to select. Index values are from 0 to n-1.
  • Returns: index
set_history(index)
Same as Gtk::OptionMenu#history=.
  • index: the index of the menu item to select. Index values are from 0 to n-1.
  • Returns: self
Ultima modifica:2008/04/06 03:58:06
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Referenze:[Gtk::Label] [Gtk::RadioButton] [Gtk::OptionMenu] [Gtk::FileSelection] [Gtk::ComboBox] [Gtk::ItemFactory] [Gtk::Menu]