Applying Custom Renderer to the Clock Control in Windows Forms Clock

27 Apr 20215 minutes to read

Customization of rendering by overriding the method

Clock control enables you to customize the Clock control by applying the custom renderer.

C#

CustomRenderer renderer = new CustomRenderer();
this.clock1.Renderer = renderer;
public class CustomRenderer : ClockRenderer
{
    public override void DrawInterior(Graphics g, float thickness, PointF startPoint, PointF endPoint, Color color, string sender)
    {
        if (sender == "SecondsHand")
        {
            g.SmoothingMode = SmoothingMode.AntiAlias;
            Pen p = new Pen(color, thickness + thickness);
            p.StartCap = LineCap.SquareAnchor;
            p.EndCap = LineCap.ArrowAnchor;
            g.DrawLine(p, startPoint, endPoint);
            p.Dispose();
        }
        else if (sender == "MinutesHand")
        {
            g.SmoothingMode = SmoothingMode.AntiAlias;
            Pen p = new Pen(color, thickness + thickness);
            p.StartCap = LineCap.SquareAnchor;
            p.EndCap = LineCap.ArrowAnchor;
            g.DrawLine(p, startPoint, endPoint);
            p.Dispose();
        }
        else if (sender == "HoursHand")
        {
            g.SmoothingMode = SmoothingMode.AntiAlias;
            Pen p = new Pen(color, thickness + thickness);
            p.StartCap = LineCap.SquareAnchor;
            p.EndCap = LineCap.ArrowAnchor;
            g.DrawLine(p, startPoint, endPoint);
            p.Dispose();
        }
        else
        {
            g.SmoothingMode = SmoothingMode.AntiAlias;
            Pen p = new Pen(color, 5 );
            p.DashStyle = DashStyle.Dot;
            g.DrawLine(p, startPoint, endPoint);
            p.Dispose();
        }
    }
}

VB.NET

Private renderer As New CustomRenderer()
Me.clock1.Renderer = renderer
public class CustomRenderer : ClockRenderer
public override void DrawInterior(Graphics g, Single thickness, PointF startPoint, PointF endPoint, Color color, String sender)
If sender = "SecondsHand" Then
g.SmoothingMode = SmoothingMode.AntiAlias
Dim p As New Pen(color, thickness + thickness)
p.StartCap = LineCap.SquareAnchor
p.EndCap = LineCap.ArrowAnchor
g.DrawLine(p, startPoint, endPoint)
p.Dispose()
ElseIf sender = "MinutesHand" Then
g.SmoothingMode = SmoothingMode.AntiAlias
Dim p As New Pen(color, thickness + thickness)
p.StartCap = LineCap.SquareAnchor
p.EndCap = LineCap.ArrowAnchor
g.DrawLine(p, startPoint, endPoint)
p.Dispose()
ElseIf sender = "HoursHand" Then
g.SmoothingMode = SmoothingMode.AntiAlias
Dim p As New Pen(color, thickness + thickness)
p.StartCap = LineCap.SquareAnchor
p.EndCap = LineCap.ArrowAnchor
g.DrawLine(p, startPoint, endPoint)
p.Dispose()
Else
g.SmoothingMode = SmoothingMode.AntiAlias
Dim p As New Pen(color, 5)
p.DashStyle = DashStyle.Dot
g.DrawLine(p, startPoint, endPoint)
p.Dispose()
End If