Wednesday, August 10, 2005 4:02 PM
Christopher
Insanely simple GradientPanel for WinForms
This has probably been done a hundred times already, but I couldn't find one
in the first few pages of google results, so I wrote my own in ~40 lines of
C#:
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
namespace PostXING.Controls
{
/// <summary>
/// GradientPanel is just like a regular panel except it optionally
/// shows a gradient.
/// </summary>
[ToolboxBitmap(typeof(Panel))]
public class GradientPanel : Panel
{
/// <summary>
/// Property GradientColor (Color)
/// </summary>
private Color _gradientColor;
public Color GradientColor {
get { return this._gradientColor;}
set { this._gradientColor = value;}
}
/// <summary>
/// Property Rotation (float)
/// </summary>
private float _rotation;
public float Rotation {
get { return this._rotation;}
set { this._rotation = value;}
}
protected override void OnPaint(PaintEventArgs e) {
if(e.ClipRectangle.IsEmpty) return; //why draw if non-visible?
using(LinearGradientBrush lgb = new
LinearGradientBrush(this.ClientRectangle,
this.BackColor,
this.GradientColor,
this.Rotation)){
e.Graphics.FillRectangle(lgb, this.ClientRectangle);
}
base.OnPaint (e); //right, want anything handled to be drawn too.
}
}
}
There it is. Enjoy!
[ Currently Playing : New Way Home - Foo Fighters - The
Colour And The Shape (5:42) ]
Filed under: Windows Forms, .NET, PostXING