C#绘制渐变矩形代码.doc

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Drawing.Drawing2D;using System.Linq;using System.Text;using System.Windows.Forms;namespace gaolinglong35jianbiantuxing public partial class Form1 : Form public Form1() InitializeComponent(); private void button1_Click(object sender, EventArgs e) ColorDialog dlg1 = new ColorDialog(); dlg1.Color = this.button3.BackColor; if (dlg1.ShowDialog() = DialogResult.OK) this.button3.BackColor = dlg1.Color; private void button2_Click(object sender, EventArgs e) ColorDialog dlg2 = new ColorDialog(); dlg2.Color = this.button4.BackColor; if (dlg2.ShowDialog() = DialogResult.OK) this.button4.BackColor = dlg2.Color; private void Form1_Load(object sender, EventArgs e) button3.Text = ; button3.Enabled = false; button3.ForeColor = this.BackColor; button4.Text = ; button4.Enabled = false; button4.ForeColor = this.BackColor; checkBox1.Checked = true; private void Form1_Paint(object sender, PaintEventArgs e) private void radioButton1_Click(object sender, EventArgs e) if (checkBox1.Checked) if (radioButton1.Checked) Brush brush1 = new LinearGradientBrush(new Point(10, 10), new Point(10, 50), this.button3.BackColor, this.button4.BackColor); Graphics g; g = this.CreateGraphics(); g.FillRectangle(brush1, 20, 60, 220, 180); brush1.Dispose(); private void radioButton2_Click(object sender, EventArgs e) if (checkBox1.Checked) if (radioButton2.Checked) Brush brush1 = new LinearGradientBrush(new Point(10, 10), new Point(50, 10), this.button3.BackColor, this.button4.BackColor); Graphics g; g = this.CreateGraphics(); g.FillRectangle(brush1, 20, 60, 220, 180); brush1.Dispose(); private void radioButton3_Click(object sender, EventArgs e) if (checkBox1.Checked) if (radioButton3.Checked) Brush brush1 = new LinearGradientBrush(new Point(10, 10), new Point(50, 50), this.button3.BackColor, this.button4.BackColor); Graphics g; g = this.CreateGraphics(); g.FillRectangle(brush1, 20, 60, 220, 180); brush1.Dispose(); private void radioButton4_Click(object sender, EventArgs e) if (checkBox1.Checked) if (radioButton4.Checked) Brush brush1 = new LinearGradientBrush(new Point(10, 10), new Point(50, 50), this.button4.BackColor, this.button3.Ba