[MonoDevelop] make my own widget

[Jeha]

You should be able to make any sort of GUI you would need with the
Monodevelop IDE.  I have recently made a date pop-up widget like what you
seem to be requesting.  To make this, I used the IDE to make one label and
one button, then linked the Button clicked event to my handler which will
pop up my calendar.  Here is my source:

---------------------------------
using System;
using Gtk;

namespace AcornTrail3
{
	[System.ComponentModel.ToolboxItem(true)]
	public partial class DatePopup : Gtk.Bin
	{
		public delegate void DateChangedHandler(DateTime date);
		public event DateChangedHandler DateChanged;

		Gtk.Calendar calendar;
		Gtk.Window popupmenu;
		Gtk.EventBox eventbox;

		DateTime datetime;
        public DateTime Date 
		{ 
    		get { return datetime; } 
    		set { datetime = value;
					dateButton.Label = datetime.ToString ("yyyy/MM/dd");
					if (this.DateChanged!=null) this.DateChanged(datetime);
				} 
        }
		public string Label {
			get { return dateLabel.Text;}
			set { dateLabel.Text = value;}
		}

		public DatePopup ()
		{
			this.Build ();
			popupmenu = new Window(WindowType.Toplevel);
			popupmenu.SkipPagerHint = true;
			popupmenu.SkipTaskbarHint = true;
			popupmenu.Decorated = false;
			popupmenu.Modal = true;
			popupmenu.KeepAbove = true;
			eventbox = new EventBox();
			Gtk.HBox menuhbox = new HBox();
			calendar = new Calendar();
			calendar.ButtonPressEvent += new
Gtk.ButtonPressEventHandler(calendarclick);
			calendar.KeyPressEvent += new Gtk.KeyPressEventHandler(calendarkeypress);
			calendar.FocusOutEvent += new Gtk.FocusOutEventHandler(calendarfocusout);
			menuhbox.PackStart (calendar,true,true,0);
			eventbox.Add (menuhbox);
			popupmenu.Add (eventbox);
		}

		protected void OnDateButtonClicked (object sender, EventArgs e)
		{
			int x, y;
			int height, xx, yy;
			xx = (sender as Button).Allocation.X;
			yy = (sender as Button).Allocation.Y;
			height = (sender as Button).Allocation.Height;
			this.GdkWindow.GetOrigin(out x, out y);
			popupmenu.Move (x+xx,y+yy+height);
			popupmenu.ShowAll ();
			Gdk.Pointer.Grab (popupmenu.GdkWindow,true,Gdk.EventMask.ButtonPressMask
| Gdk.EventMask.FocusChangeMask,null,null,Gtk.Global.CurrentEventTime);
            Gdk.Keyboard.Grab(popupmenu.GdkWindow, true,
Gtk.Global.CurrentEventTime); 
			Gtk.Grab.Add(popupmenu); 
		}
		private void closepopup ()
		{
			Gtk.Grab.Remove (popupmenu); 
			Gdk.Keyboard.Ungrab (Gtk.Global.CurrentEventTime); 
			Gdk.Pointer.Ungrab (Gtk.Global.CurrentEventTime);
			popupmenu.HideAll ();
		}
		private void calendarclick (object o, Gtk.ButtonPressEventArgs args)
		{
			closepopup();
			Date = calendar.GetDate();
		}
		private void calendarkeypress (object o, Gtk.KeyPressEventArgs args)
		{
			if (args.Event.Key == Gdk.Key.Escape || args.Event.Key == Gdk.Key.Return)
{
				closepopup();
			}
		}
		private void calendarfocusout (object o, Gtk.FocusOutEventArgs args)
		{
			closepopup();
		}
	}
}
--------------------

And here is the GUI source ( but really you should let the IDE make this for
you).

-------------------


// This file has been generated by the GUI designer. Do not modify.
namespace AcornTrail3
{
	public partial class DatePopup
	{
		private global::Gtk.HBox hbox1;
		private global::Gtk.Label dateLabel;
		private global::Gtk.Button dateButton;
		
		protected virtual void Build ()
		{
			global::Stetic.Gui.Initialize (this);
			// Widget AcornTrail3.DatePopup
			global::Stetic.BinContainer.Attach (this);
			this.Name = "AcornTrail3.DatePopup";
			// Container child AcornTrail3.DatePopup.Gtk.Container+ContainerChild
			this.hbox1 = new global::Gtk.HBox ();
			this.hbox1.Name = "hbox1";
			this.hbox1.Spacing = 6;
			// Container child hbox1.Gtk.Box+BoxChild
			this.dateLabel = new global::Gtk.Label ();
			this.dateLabel.Name = "dateLabel";
			this.dateLabel.LabelProp = global::Mono.Unix.Catalog.GetString ("Date:");
			this.hbox1.Add (this.dateLabel);
			global::Gtk.Box.BoxChild w1 = ((global::Gtk.Box.BoxChild)(this.hbox1
[this.dateLabel]));
			w1.Position = 0;
			w1.Expand = false;
			w1.Fill = false;
			// Container child hbox1.Gtk.Box+BoxChild
			this.dateButton = new global::Gtk.Button ();
			this.dateButton.CanFocus = true;
			this.dateButton.Name = "dateButton";
			this.dateButton.UseUnderline = true;
			this.dateButton.Xalign = 0F;
			this.dateButton.Label = global::Mono.Unix.Catalog.GetString
("GtkButton");
			this.hbox1.Add (this.dateButton);
			global::Gtk.Box.BoxChild w2 = ((global::Gtk.Box.BoxChild)(this.hbox1
[this.dateButton]));
			w2.Position = 1;
			this.Add (this.hbox1);
			if ((this.Child != null)) {
				this.Child.ShowAll ();
			}
			this.Hide ();
			this.dateButton.Clicked += new global::System.EventHandler
(this.OnDateButtonClicked);
		}
	}
}
------------------------



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