How to: Custom Paint Day Headers

• Nov 13, 2018
• 2 minutes to read

The following code handles the SchedulerControl.CustomDrawDayHeader event to manually paint day headers. The image below shows the result.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-custom-paint-day-headers-e1804

Form1.cs

using DevExpress.XtraScheduler;
using DevExpress.XtraScheduler.Drawing;
using System.Drawing.Drawing2D;
private void schedulerControl1_CustomDrawDayHeader(object sender, CustomDrawObjectEventArgs e) {
    DayHeader header = e.ObjectInfo as DayHeader;
    // Draws the outer rectangle.
    e.Cache.FillRectangle(new LinearGradientBrush(e.Bounds,
        Color.LightBlue, Color.Blue, LinearGradientMode.Vertical), e.Bounds);
    Rectangle innerRect = Rectangle.Inflate(e.Bounds, -2, -2);
    // Draws the inner rectangle.
    e.Cache.FillRectangle(new LinearGradientBrush(e.Bounds,
        Color.Blue, Color.LightSkyBlue, LinearGradientMode.Vertical), innerRect);
    // Draws the header's caption.
    e.Cache.DrawString(header.Caption, header.Appearance.HeaderCaption.Font,
        new SolidBrush(Color.White), innerRect,
        header.Appearance.HeaderCaption.GetStringFormat());
    e.Handled = true;
}

Form1.vb

Imports DevExpress.XtraScheduler
Imports DevExpress.XtraScheduler.Drawing
Imports System.Drawing.Drawing2D
Private Sub schedulerControl1_CustomDrawDayHeader(ByVal sender As Object, ByVal e As CustomDrawObjectEventArgs)
    Dim header As DayHeader = TryCast(e.ObjectInfo, DayHeader)
    ' Draws the outer rectangle.
    e.Cache.FillRectangle(New LinearGradientBrush(e.Bounds, Color.LightBlue, Color.Blue, LinearGradientMode.Vertical), e.Bounds)
    Dim innerRect As Rectangle = Rectangle.Inflate(e.Bounds, -2, -2)
    ' Draws the inner rectangle.
    e.Cache.FillRectangle(New LinearGradientBrush(e.Bounds, Color.Blue, Color.LightSkyBlue, LinearGradientMode.Vertical), innerRect)
    ' Draws the header's caption.
    e.Cache.DrawString(header.Caption, header.Appearance.HeaderCaption.Font, New SolidBrush(Color.White), innerRect, header.Appearance.HeaderCaption.GetStringFormat())
    e.Handled = True
End Sub