GroupCaptionCustomDrawEventArgs Class

using System.Drawing.Drawing2D;
using DevExpress.XtraEditors;
// ...

private void groupControl1_CustomDrawCaption(object sender, GroupCaptionCustomDrawEventArgs e) {
   LinearGradientBrush outerBrush = new LinearGradientBrush(e.CaptionBounds, 
     Color.LightBlue, Color.Blue, LinearGradientMode.Vertical);
   using(outerBrush) {
      e.Graphics.FillRectangle(outerBrush, e.CaptionBounds);
   }

   Rectangle innerRect = Rectangle.Inflate(e.CaptionBounds, -3, -3);
   LinearGradientBrush innerBrush = new LinearGradientBrush(innerRect, Color.Blue, 
     Color.LightBlue, LinearGradientMode.Vertical);
   using(innerBrush) {
      e.Graphics.FillRectangle(innerBrush, e.CaptionBounds);
   }

   StringFormat outStrFormat = new StringFormat();
   outStrFormat.Alignment = StringAlignment.Center;
   outStrFormat.LineAlignment = StringAlignment.Center;
   e.Graphics.DrawString(e.Info.Caption, e.Info.AppearanceCaption.Font, 
     e.Cache.GetSolidBrush(Color.White), innerRect, outStrFormat);

   e.Handled = true;
}

Imports System.Drawing.Drawing2D
Imports DevExpress.XtraEditors
' ...

Private Sub GroupControl1_CustomDrawCaption(ByVal sender As Object, _
ByVal e As GroupCaptionCustomDrawEventArgs) _
Handles GroupControl1.CustomDrawCaption
   Dim outerBrush As LinearGradientBrush = New LinearGradientBrush(e.CaptionBounds, _
     Color.LightBlue, Color.Blue, LinearGradientMode.Vertical)
   e.Graphics.FillRectangle(outerBrush, e.CaptionBounds)
   outerBrush.Dispose()

   Dim innerRect As Rectangle = Rectangle.Inflate(e.CaptionBounds, -3, -3)
   Dim innerBrush As LinearGradientBrush = New LinearGradientBrush(innerRect, _
     Color.Blue, Color.LightBlue, LinearGradientMode.Vertical)
   e.Graphics.FillRectangle(innerBrush, e.CaptionBounds)
   innerBrush.Dispose()

   Dim textRect As New RectangleF(innerRect.Left, innerRect.Top, _
     innerRect.Width, innerRect.Height)
   Dim outStrFormat As StringFormat = New StringFormat()
   outStrFormat.Alignment = StringAlignment.Center
   outStrFormat.LineAlignment = StringAlignment.Center
   e.Graphics.DrawString(e.Info.Caption, e.Info.AppearanceCaption.Font, _
     e.Cache.GetSolidBrush(Color.White), textRect, outStrFormat)

   e.Handled = True
End Sub