一个自定义LABEL组件的C#源代码

2022-07-15 80酷酷网 80kuku.com

　　源代码

using System;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.ComponentModel;

namespace wzsbmain
{
/// <summary>
/// Summary description for LabelGradient.
/// </summary>

public class wzsbmainLabel : System.Windows.Forms.Label
{

  #region Implementtation Member Fields
  protected Color gradientColorOne = Color.White;
  protected Color gradientColorTwo = Color.Blue;
  protected LinearGradientMode lgm = LinearGradientMode.ForwardDiagonal;
  protected Border3DStyle b3dstyle = Border3DStyle.Bump;
  #endregion

  #region GradientColorOne Properties
  [
  DefaultValue(typeof(Color),"White"),
  Description("The first gradient color."),
  Category("Appearance"),
  ]

   //GradientColorOne Properties
  public Color GradientColorOne
  {
   get
   {
    return gradientColorOne;
   }
   set
   {
    gradientColorOne = value;
    Invalidate();
   }
  }
  #endregion

  #region GradientColorTwo Properties
  [
  DefaultValue(typeof(Color),"Blue"),
  Description("The second gradient color."),
  Category("Appearance"),
  ]

   //GradientColorTwo Properties
  public Color GradientColorTwo
  {
   get
   {
    return gradientColorTwo;
   }
   set
   {
    gradientColorTwo = value;
    Invalidate();
   }
  }

#endregion

  #region LinearGradientMode Properties
  //LinearGradientMode Properties
  [
  DefaultValue(typeof(LinearGradientMode),"ForwardDiagonal"),
  Description("Gradient Mode"),
  Category("Appearance"),
  ]

  public LinearGradientMode GradientMode
  {
   get
   {
    return lgm;
   }

   set
   {
    lgm = value;
    Invalidate();
   }
  }
  #endregion

  #region Border3DStyle Properties
  //Border3DStyle Properties
  [
  DefaultValue(typeof(Border3DStyle),"Bump"),
  Description("BorderStyle"),
  Category("Appearance"),
  ]

   // hide BorderStyle inherited from the base class
  new public Border3DStyle BorderStyle
  {
   get
   {
    return b3dstyle;
   }
   set
   {
    b3dstyle = value;
    Invalidate();
   }
  }
  #endregion

  #region Removed Properties

  // Remove BackColor Property
  [
  Browsable(false),
  EditorBrowsable(EditorBrowsableState.Never)
  ]
  public override System.Drawing.Color BackColor
  {
   get
   {
    return new System.Drawing.Color();
   }
   set {;}
  }

  #endregion

  //  protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
  //  {
  //   Graphics gfx = e.Graphics;
  //   //Border3DStyle b3dstyle = Border3DStyle.Bump;
  //   //Border3DSide b3dside = Border3DSide.All;
  //
  //   Rectangle rect = new Rectangle (0,0,this.Width,this.Height);
  //
  //   // Dispose of brush resources after use
  //   using (LinearGradientBrush lgb = new LinearGradientBrush(rect, gradientColorOne,gradientColorTwo,lgm))
  //   gfx.FillRectangle(lgb,rect);
  //
  //   //3d border
  //   //ControlPaint.DrawBorder3D(gfx,rect,b3dstyle,b3dside);
  //
  //
  //   // Call the OnPaint method of the base class
  //            base.OnPaint(e);
  //
  //  }

  protected override void OnPaintBackground(System.Windows.Forms.PaintEventArgs pevent)
  {
   Graphics gfx = pevent.Graphics;

   Rectangle rect = new Rectangle (0,0,this.Width,this.Height);

   // Dispose of brush resources after use
   using (LinearGradientBrush lgb = new LinearGradientBrush(rect, gradientColorOne,gradientColorTwo,lgm))
    gfx.FillRectangle(lgb,rect);

   ControlPaint.DrawBorder3D(gfx,rect,b3dstyle);
  }

}
}