using System;
using System.Drawing;
using System.Windows.Forms;
class SplitThreeFrames: Form
{
public static void Main()
{
Application.Run(new SplitThreeFrames());
}
public SplitThreeFrames()
{
Panel panel = new Panel();
panel.Parent = this;
panel.Dock = DockStyle.Fill;
Splitter split1 = new Splitter();
split1.Parent = this;
split1.Dock = DockStyle.Left;
Panel panel1 = new Panel();
panel1.Parent = this;
panel1.Dock = DockStyle.Left;
panel1.BackColor = Color.Lime;
panel1.Resize += new EventHandler(PanelOnResize);
panel1.Paint += new PaintEventHandler(PanelOnPaint);
Panel panel2 = new Panel();
panel2.Parent = panel;
panel2.Dock = DockStyle.Fill;
panel2.BackColor = Color.Blue;
panel2.Resize += new EventHandler(PanelOnResize);
panel2.Paint += new PaintEventHandler(PanelOnPaint);
Splitter split2 = new Splitter();
split2.Parent = panel;
split2.Dock = DockStyle.Top;
Panel panel3 = new Panel();
panel3.Parent = panel;
panel3.Dock = DockStyle.Top;
panel3.BackColor = Color.Tan;
panel3.Resize += new EventHandler(PanelOnResize);
panel3.Paint += new PaintEventHandler(PanelOnPaint);
panel1.Width = ClientSize.Width / 3;
panel3.Height = ClientSize.Height / 3;
}
void PanelOnResize(object obj, EventArgs ea)
{
((Panel) obj).Invalidate();
}
void PanelOnPaint(object obj, PaintEventArgs pea)
{
Panel panel = (Panel) obj;
Graphics grfx = pea.Graphics;
grfx.DrawEllipse(Pens.Black, 0, 0,
panel.Width - 1, panel.Height - 1);
}
}