using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Timers ;
namespace WindowsControlLibrary1
{
private System.Windows.Forms.Timer timer1;
public partial class UserControl1 : UserControl
{
Color color1=Color .Red ;
Color color2=Color .Green ;
private int angle = 0;
public UserControl1()
{
InitializeComponent();
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true); // 禁止擦除背景.
SetStyle(ControlStyles.DoubleBuffer, true); // 双缓冲
satrt();
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
LinearGradientBrush b = new LinearGradientBrush(this.ClientRectangle, color1, color2, angle, false);
//LinearGradientBrush b = new LinearGradientBrush(this.ClientRectangle, color1, color2, LinearGradientMode .Horizontal );
e.Graphics.FillEllipse (b, this.ClientRectangle);
}
protected void satrt()
{
this.timer1.Tick += new EventHandler(OnTimerEvent);
this.timer1.Interval = 10;
this.timer1.Enabled = true;
}
protected void OnTimerEvent(object sender, EventArgs e)
{
angle += 5;
if (angle >= 360) angle = 0;
this.Refresh();
}
public Color Co1
{
set { color1 = value; Invalidate(); }
get { return color1; }
}
public Color Co2
{
set { color2 = value; Invalidate(); }
get { return color2; }
}
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.timer1 = new System.Windows.Forms.Timer(this.components);
this.SuspendLayout();
//
// UserControl1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.Name = "UserControl1";
this.ResumeLayout(false);
}
}
}
