Csharp/C Sharp by API/System.Windows.Forms/Splitter

Splitter.Dock

<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;

class SplitTwoProportional: Form {

    Panel panel2;
    float fProportion = 0.5f;
  
    public static void Main()
    {
         Application.Run(new SplitTwoProportional());
    }
    public SplitTwoProportional()
    {
         Text = "";
  
         Panel panel1     = new Panel();
         panel1.Parent    = this;
         panel1.Dock      = DockStyle.Fill;
         panel1.BackColor = Color.Red;
         panel1.Resize   += new EventHandler(PanelOnResize);
         panel1.Paint    += new PaintEventHandler(PanelOnPaint);
  
         Splitter split   = new Splitter();
         split.Parent     = this;
         split.Dock       = DockStyle.Left;
         split.SplitterMoving += new SplitterEventHandler(SplitterOnMoving);
  
         panel2           = new Panel();
         panel2.Parent    = this;
         panel2.Dock      = DockStyle.Left;
         panel2.BackColor = Color.Lime;
         panel2.Resize   += new EventHandler(PanelOnResize);
         panel2.Paint    += new PaintEventHandler(PanelOnPaint);
  
         OnResize(EventArgs.Empty);
    }
    protected override void OnResize(EventArgs ea)
    {
         base.OnResize(ea);
         panel2.Width = (int) (fProportion * ClientSize.Width);
    }
    void SplitterOnMoving(object obj, SplitterEventArgs sea)
    {
         fProportion = (float) sea.SplitX / ClientSize.Width;
    }
    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);
    }

}

 </source>

Splitter.SplitterMoving

<source lang="csharp">

using System; using System.Drawing; using System.Windows.Forms;

class SplitTwoProportional: Form {

    Panel panel2;
    float fProportion = 0.5f;
  
    public static void Main()
    {
         Application.Run(new SplitTwoProportional());
    }
    public SplitTwoProportional()
    {
         Text = "";
  
         Panel panel1     = new Panel();
         panel1.Parent    = this;
         panel1.Dock      = DockStyle.Fill;
         panel1.BackColor = Color.Red;
         panel1.Resize   += new EventHandler(PanelOnResize);
         panel1.Paint    += new PaintEventHandler(PanelOnPaint);
  
         Splitter split   = new Splitter();
         split.Parent     = this;
         split.Dock       = DockStyle.Left;
         split.SplitterMoving += new SplitterEventHandler(SplitterOnMoving);
  
         panel2           = new Panel();
         panel2.Parent    = this;
         panel2.Dock      = DockStyle.Left;
         panel2.BackColor = Color.Lime;
         panel2.Resize   += new EventHandler(PanelOnResize);
         panel2.Paint    += new PaintEventHandler(PanelOnPaint);
  
         OnResize(EventArgs.Empty);
    }
    protected override void OnResize(EventArgs ea)
    {
         base.OnResize(ea);
         panel2.Width = (int) (fProportion * ClientSize.Width);
    }
    void SplitterOnMoving(object obj, SplitterEventArgs sea)
    {
         fProportion = (float) sea.SplitX / ClientSize.Width;
    }
    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);
    }

}

 </source>