form1.cs

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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace Palette
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.TextBox tbX1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox tbY1;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox tbX2;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox tbY2;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.Button btLine;
		private System.Windows.Forms.TextBox tbWidth;
		private System.Windows.Forms.Label label6;
		private System.Windows.Forms.TextBox tbColor;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.tbX1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.tbY1 = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.tbX2 = new System.Windows.Forms.TextBox();
			this.label4 = new System.Windows.Forms.Label();
			this.tbY2 = new System.Windows.Forms.TextBox();
			this.label5 = new System.Windows.Forms.Label();
			this.tbWidth = new System.Windows.Forms.TextBox();
			this.btLine = new System.Windows.Forms.Button();
			this.label6 = new System.Windows.Forms.Label();
			this.tbColor = new System.Windows.Forms.TextBox();
			this.SuspendLayout();
			// 
			// tbX1
			// 
			this.tbX1.Location = new System.Drawing.Point(464, 64);
			this.tbX1.Name = "tbX1";
			this.tbX1.Size = new System.Drawing.Size(80, 21);
			this.tbX1.TabIndex = 0;
			this.tbX1.Text = "0";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(433, 68);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(24, 16);
			this.label1.TabIndex = 1;
			this.label1.Text = "x1:";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(432, 112);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(24, 16);
			this.label2.TabIndex = 3;
			this.label2.Text = "y1:";
			// 
			// tbY1
			// 
			this.tbY1.Location = new System.Drawing.Point(464, 104);
			this.tbY1.Name = "tbY1";
			this.tbY1.Size = new System.Drawing.Size(80, 21);
			this.tbY1.TabIndex = 2;
			this.tbY1.Text = "0";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(432, 144);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(24, 16);
			this.label3.TabIndex = 5;
			this.label3.Text = "x2:";
			// 
			// tbX2
			// 
			this.tbX2.Location = new System.Drawing.Point(464, 144);
			this.tbX2.Name = "tbX2";
			this.tbX2.Size = new System.Drawing.Size(80, 21);
			this.tbX2.TabIndex = 4;
			this.tbX2.Text = "0";
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(432, 185);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(24, 16);
			this.label4.TabIndex = 7;
			this.label4.Text = "y2:";
			// 
			// tbY2
			// 
			this.tbY2.Location = new System.Drawing.Point(464, 181);
			this.tbY2.Name = "tbY2";
			this.tbY2.Size = new System.Drawing.Size(80, 21);
			this.tbY2.TabIndex = 6;
			this.tbY2.Text = "0";
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(416, 223);
			this.label5.Name = "label5";
			this.label5.Size = new System.Drawing.Size(48, 16);
			this.label5.TabIndex = 9;
			this.label5.Text = "width:";
			// 
			// tbWidth
			// 
			this.tbWidth.Location = new System.Drawing.Point(464, 216);
			this.tbWidth.Name = "tbWidth";
			this.tbWidth.Size = new System.Drawing.Size(80, 21);
			this.tbWidth.TabIndex = 8;
			this.tbWidth.Text = "";
			// 
			// btLine
			// 
			this.btLine.Location = new System.Drawing.Point(440, 320);
			this.btLine.Name = "btLine";
			this.btLine.Size = new System.Drawing.Size(96, 24);
			this.btLine.TabIndex = 10;
			this.btLine.Text = "直 线";
			this.btLine.Click += new System.EventHandler(this.btLine_Click);
			// 
			// label6
			// 
			this.label6.Location = new System.Drawing.Point(416, 264);
			this.label6.Name = "label6";
			this.label6.Size = new System.Drawing.Size(48, 16);
			this.label6.TabIndex = 12;
			this.label6.Text = "color:";
			// 
			// tbColor
			// 
			this.tbColor.Location = new System.Drawing.Point(464, 256);
			this.tbColor.Name = "tbColor";
			this.tbColor.Size = new System.Drawing.Size(80, 21);
			this.tbColor.TabIndex = 11;
			this.tbColor.Text = "";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(600, 382);
			this.Controls.Add(this.label6);
			this.Controls.Add(this.tbColor);
			this.Controls.Add(this.btLine);
			this.Controls.Add(this.label5);
			this.Controls.Add(this.tbWidth);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.tbY2);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.tbX2);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.tbY1);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.tbX1);
			this.Name = "Form1";
			this.Text = "绘直线";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void btLine_Click(object sender, System.EventArgs e)
		{
			Graphics g=this.CreateGraphics();
			int x1=int.Parse(tbX1.Text);
			int y1=int.Parse(tbY1.Text);
			int x2=int.Parse(tbX2.Text);
			int y2=int.Parse(tbY2.Text);
			int width = int.Parse(tbWidth.Text);
			Color color=Color.FromName(tbColor.Text);
			CLine cl=new CLine(x1,y1,x2,y2,color,width,g);
			cl.DrawLine();
			
			


			//Graphics g=this.CreateGraphics();
			//Pen pen1 = new Pen(Color.Red,3);
			//g.DrawLine(pen1,30,10,200,220);
		}
	}
}