gtk-sharp0.0.0.0neutralGtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.A widget used to choose from a list of valid choices.
A is a widget that allows the user to choose from a list of valid choices.
The displays the selected choice.
When activated the displays a popup which allows the user to make a new choice.
Using a is simple; build a , by calling , then appending s to it with .
Set that menu on the with .
Set the selected with ; connect to the event ; when the event occurs, check the new selected with .
using System;
using Gtk;
class OptionMenuSample
{
OptionMenu opt;
static void Main ()
{
new OptionMenuSample ();
}
OptionMenuSample ()
{
Application.Init ();
Window win = new Window ("OptionMenuSample");
win.DeleteEvent += new DeleteEventHandler (OnWinDelete);
// set up the OptionMenu
opt = new OptionMenu ();
opt.Changed += new EventHandler (OnOptionChanged);
Menu m = new Menu ();
MenuItem miOne = new MenuItem ("One");
m.Append (miOne);
MenuItem miTwo = new MenuItem ("Two");
m.Append (miTwo);
MenuItem miThree = new MenuItem ("Three");
m.Append (miThree);
// add children widgets to their parents
opt.Menu = m;
win.Add (opt);
// set the OptionMenu to a value
opt.SetHistory (2);
win.ShowAll ();
Application.Run ();
}
void OnOptionChanged (object o, EventArgs args)
{
Console.WriteLine (opt.History);
}
void OnWinDelete (object o, DeleteEventArgs args)
{
Application.Quit ();
}
}
Gtk.ButtonAtk.ImplementorGLib.IWrapperGLib.IWrapperSystem.IDisposableMethodSystem.VoidRemoves the menu from the .MethodSystem.VoidDisposes the resources associated with the object.ConstructorInternal constructor
Pointer to the C object.
An instance of , wrapping the C object.This is an internal constructor, and should not be used by user code.ConstructorCreates a new an object of type This is the default constructor for PropertySystem.Int32Retrieves the index of the currently selected .an object of type The s are numbered from top to bottom, starting with 0.PropertyGtk.WidgetThe menu of options.
an object of type an object of type EventSystem.EventHandlerEmitted when the selection is changed.MethodSystem.VoidSelects the menu item specified by making it the newly selected value for the .
a PropertyGLib.GTypeTo be addeda To be addedMethodSystem.VoidDefault handler for the event.Override this method in a subclass to provide a default handler for the event.ConstructorTo be added
a a To be added