Applying Custom Renderer to the Clock Control in Windows Forms Clock

3 Sep 2020 / 5 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

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