sample9.cs

C#函数手册

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;
namespace WindowsApplication2
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Panel panel1;
		/// <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.panel1 = new System.Windows.Forms.Panel();
			this.SuspendLayout();
			// 
			// panel1
			// 
			this.panel1.Location = new System.Drawing.Point(40, 32);
			this.panel1.Name = "panel1";
			this.panel1.TabIndex = 0;
			this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(this.panel1_Paint);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 273);
			this.Controls.Add(this.panel1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.Load += new System.EventHandler(this.Form1_Load);
			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 Form1_Load(object sender, System.EventArgs e)
		{
		
		}		

		private void panel1_Paint(object sender, 
			System.Windows.Forms.PaintEventArgs e)
		{	
			Pen blackPen= new Pen(Color.Black, 3);
			int x = 10;
			int y = 10;
			int width = 60;
			int height = 100;
			int startAngle =  30;
			int sweepAngle = 220;
			e.Graphics.DrawArc(blackPen, x, y, width, height, 
				startAngle, sweepAngle);
			//使用DrawArc方法绘制弧线
			Point start = new Point(100, 100);
			Point control1 = new Point(150, 20);
			Point control2 = new Point(250, 50);
			Point end = new Point(300, 100);
			e.Graphics.DrawBezier(blackPen, start, control1, control2,end);
			//使用DrawBezier方法绘制贝塞尔样条
			PointF startF = new PointF(50.0F, 50.0F);
			PointF controlF1 = new PointF(80.0F, 30.0F);
			PointF controlF2 = new PointF(100.0F, 50.0F);
			PointF end1 = new PointF(330.0F, 100.0F);
			PointF controlF3 = new PointF(400.0F, 150.0F);
			PointF controlF4 = new PointF(450.0F, 250.0F);
			PointF end2 = new PointF(400.0F, 300.0F);
			PointF[] bezierPoints ={startF, controlF1, controlF2, 
									   end1,controlF3, controlF4, end2};
			e.Graphics.DrawBeziers(blackPen, bezierPoints);
			//使用DrawBeziers方法绘制一系列贝塞尔样条
			PointF point1 = new PointF( 50.0F,  50.0F);
			PointF point2 = new PointF(100.0F,  25.0F);
			PointF point3 = new PointF(200.0F,   5.0F);
			PointF point4 = new PointF(250.0F,  50.0F);
			PointF point5 = new PointF(300.0F, 100.0F);
			PointF point6 = new PointF(350.0F, 200.0F);
			PointF point7 = new PointF(250.0F, 250.0F);
			PointF[] curvePoints ={point1,point2,	point3,point4,point5,point6,point7};
			e.Graphics.DrawLines(blackPen, curvePoints);
			//使用DrawLines方法绘制一组线段
			int offset = 1;
			int num =3;
			e.Graphics.DrawCurve(blackPen, curvePoints, offset, num);
			//使用DrawCurve方法绘制基数样条
			x = 420;
			y = 30;
			width =80;
			height =33;
			e.Graphics.DrawEllipse(blackPen, x, y, width, height);
			//使用DrawEllipse方法绘制椭圆
			Icon newIcon = new Icon("C:\\a.ico");
			x = 0;
			y = 0;
			e.Graphics.DrawIcon(newIcon, x, y);
			//使用DrawIcon方法绘制图像
			Rectangle rect = new Rectangle( 500, 0, 500, 100);
			e.Graphics.DrawIconUnstretched(newIcon, rect);
			//使用DrawIconUnstretched方法不缩放地绘制图像
			Image newImage = Image.FromFile("C:\\w2k.jpg");
			Point ulCorner = new Point( 200, 200);
			e.Graphics.DrawImage(newImage, ulCorner);
			//使用DrawImage方法按原始大小绘制指定的Image对象
			int x1=15;
			int x2=498;
			int y1=8;
			int y2=8;
			e.Graphics.DrawLine(blackPen, x1, y1, x2, y2);
			//使用DrawLine方法绘制线段
			x = 300;
			y = 20;
			width = 200;
			height = 100;
			startAngle =  0;
			sweepAngle = 45;
			e.Graphics.DrawPie(blackPen, x, y, width, height,startAngle, sweepAngle);
			//使用DrawPie方法绘制扇形
			point1 = new PointF( 450.0F,  150.0F);
			point2 = new PointF(400.0F,  225.0F);
			point3 = new PointF(500.0F,  235.0F);
			point4 = new PointF(450.0F,  250.0F);
			point5 = new PointF(400.0F,  200.0F);
			point6 = new PointF(450.0F,  200.0F);
			point7 = new PointF(450.0F,  210.0F);
			PointF[] curvePointFs ={point1,	point2,point3,	point4,point5,point6,	point7};
			e.Graphics.DrawPolygon(blackPen, curvePointFs);
			//使用DrawPolygon方法绘制多边形
			x=400;
			y=30;
			width=20;
			height=50;
			e.Graphics.DrawRectangle(blackPen,x,y,width,height);
			//使用DrawRectangle方法绘制矩形
			RectangleF[] rects =
{
		new RectangleF(  0.0F,   0.0F, 100.0F, 200.0F),new RectangleF(100.0F, 200.0F, 250.0F,  50.0F),
	new RectangleF(300.0F,   0.0F,  50.0F, 100.0F)};
			e.Graphics.DrawRectangles(blackPen, rects);
			//使用DrawRectangles方法绘制一系列的矩形
			e.Graphics.DrawString("测试", new Font("Arial",13), 
				Brushes.Black, 110, 0);
			//使用DrawString方法绘制指定的文本字符串
			Rectangle testR = new Rectangle(100, 100, 180, 180);
			Region testRn = new Region(testR);
			e.Graphics.ExcludeClip(testRn);
			//使用ExcludeClip方法更新剪辑区域
			e.Graphics.FillRectangle(new SolidBrush(Color.Yellow), 0, 0, 250, 250);
			//使用FillRectangle方法填充矩形
			SolidBrush blackBrush = new SolidBrush(Color.Black);
			Point p1 = new Point(100, 100);
			Point p2 = new Point(200,  50);
			Point p3 = new Point(250, 200);
			Point p4 = new Point( 50, 150);
			Point[] points = {p1, p2, p3, p4};
			e.Graphics.FillClosedCurve(blackBrush, points);
			//使用FillClosedCurve方法闭合基数样条曲线的内部
			x=300;
			y=80;
			width=50;
			height=30;
			RectangleF testRF = new RectangleF( x, y, width, height);
			e.Graphics.FillEllipse(blackBrush, testRF);
			//使用FillEllipse方法填充椭圆内部
			testR = new Rectangle( 80, 80, 200, 100);
			startAngle =  0;
			sweepAngle = 45;
			e.Graphics.FillPie(blackBrush, testR, startAngle, sweepAngle);
			//使用FillPie方法填充扇形区的内部
			point1= new PointF( 50,  50);
			point2 = new PointF(100,  25);
			point3 = new PointF(200,   5);
			point4 = new PointF(250,  50);
			point5 = new PointF(300, 100);
			point6 = new PointF(350, 200);
			point7 = new PointF(250, 250);
			PointF[] testPF =   
{
	point1,point2,point3,point4,point5,point6,point7
};
			e.Graphics.FillPolygon(blackBrush, testPF);
			//使用FillPolygon方法填充多边形的内部
			testRF = new RectangleF(180.0F,180.0F, 200.0F, 200.0F);
			e.Graphics.FillRectangle(blackBrush, testRF);
			//使用FillRectangle方法填充矩形
			RectangleF[] testRFA =
{
	new RectangleF( 0.0F, 0.0F, 100.0F, 200.0F),
	new RectangleF(100.0F, 200.0F, 250.0F,  50.0F),
	new RectangleF(300.0F,   0.0F,  50.0F, 100.0F)
};
			e.Graphics.FillRectangles(blackBrush, testRFA);
			//使用FillRectangles方法填充多个矩形
			testR= new Rectangle(100, 100, 200, 200);
			testRn = new Region(testR);
			e.Graphics.FillRegion(blackBrush, testRn);
			//使用FillRegion方法填充 Region 对象的内部
			IntPtr hdc = e.Graphics.GetHdc();
			Graphics newGraphics = Graphics.FromHdc(hdc);
			newGraphics.DrawRectangle(new Pen(Color.Green,5),0,0, 200, 100);
			e.Graphics.ReleaseHdc(hdc);
			//使用DrawRectangle方法绘制矩形
			Color testC = Color.FromArgb(200, 180, 60 , 140);
			SolidBrush testB = new SolidBrush(testC);
			e.Graphics.FillEllipse(testB, 80, 10, 400, 150);
			Color tempC = e.Graphics.GetNearestColor(testC);
			SolidBrush testSB = new SolidBrush(tempC);
			e.Graphics.FillEllipse(testSB, 100, 0,100, 20);
			//使用FillEllipse方法绘制椭圆
			testRn = new Region(new Rectangle(50, 50, 100, 100));
			e.Graphics.SetClip(testRn, CombineMode.Replace);
			x1 = 100;
			y1 = 100;
			x2 = 200;
			y2 = 200;
			if (e.Graphics.IsVisible(x1, y1))
				//使用IsVisible方法判断一对坐标指定的点是否包含在此 
				//Graphics 对象的可见剪辑区域内
				e.Graphics.FillEllipse(new SolidBrush(Color.Red),x1,y1,10, 10);
			if (e.Graphics.IsVisible(x2, y2))
				e.Graphics.FillEllipse(new SolidBrush(Color.Blue), x2, y2, 10, 10);
			string measureString = "第一和第二区域";
			Font stringFont = new Font("Times New Roman", 16.0F);
			CharacterRange[] characterRanges =
{ 
	new CharacterRange(0, 5),
	new CharacterRange(10, 6)
};
			x = 450;
			y = 50;
			width = 35;
			height = 200;
			testRF = new RectangleF(x, y, width, height);
			StringFormat stringFormat = new StringFormat();
			stringFormat.FormatFlags = 
				StringFormatFlags.DirectionVertical;
			stringFormat.SetMeasurableCharacterRanges(characterRanges);
			e.Graphics.DrawString(measureString,stringFont,Brushes.Black,x, y,stringFormat);
			//使用DrawString方法绘制字符串
			Region[] stringRegions = new Region[2];
			stringRegions = e.Graphics.MeasureCharacterRanges(measureString,stringFont,testRF,stringFormat);
			//使用MeasureCharacterRanges方法获取Region对象数组
			RectangleF measureRect1 = 
				stringRegions[0].GetBounds(e.Graphics);
			e.Graphics.DrawRectangle(new Pen(Color.Yellow, 1),
				Rectangle.Round(measureRect1));
			RectangleF measureRect2 = 
				stringRegions[1].GetBounds(e.Graphics);
			e.Graphics.DrawRectangle(new Pen(Color.Green, 1),
				Rectangle.Round(measureRect2));
			measureString = "字符串";
			stringFont = new Font("Arial", 16);
			int stringWidth = 200;
			SizeF stringSize = new SizeF();
			stringSize = e.Graphics.MeasureString(measureString, 
				stringFont, stringWidth);
			//使用MeasureString方法测量用指定的 Font 对象绘制的指定字符串
			e.Graphics.DrawRectangle(new Pen(Color.Red, 1),	0.0F, 
				0.0F, stringSize.Width, stringSize.Height);
			e.Graphics.DrawString(measureString,stringFont,Brushes.White ,new PointF(450, 30));
			testR = new Rectangle(0, 0, 200, 200);
			e.Graphics.SetClip(testR);
			//使用SetClip方法将此 Graphics 对象的剪辑区域设置为指定 Graphics 对象的 Clip 属性
			testRF = new RectangleF(100.0F,100.0F,
				200.0F, 200.0F);
			e.Graphics.IntersectClip(testRF);
			//使用IntersectClip方法将此 Graphics 对象的剪辑区域更新为当前剪辑区域与指定Rectangle结构的交集
			e.Graphics.FillRectangle(new SolidBrush(Color.Blue), 0, 0, 500, 500);
			e.Graphics.ResetClip();
			//使用ResetClip方法将此 Graphics 对象的剪辑区域重置为无限区域
			e.Graphics.DrawRectangle(new Pen(Color.Black), testR);
			e.Graphics.DrawRectangle(new Pen(Color.Red), 
				Rectangle.Round(testRF));
			e.Graphics.TranslateTransform(100, 0);
			//使用TranslateTransform方法将指定的平移添加到此Graphics 对象的变换矩阵前
			GraphicsState transState = e.Graphics.Save();
			//使用Save方法保存此 Graphics 对象的当前状态，并用 GraphicsState 对象标识保存的状态
			e.Graphics.ResetTransform();
			e.Graphics.FillRectangle(new SolidBrush(Color.Red), 0,0, 100, 100);
			e.Graphics.Restore(transState);
			e.Graphics.FillRectangle(new SolidBrush(Color.Blue), 0,0, 100, 100);
			e.Graphics.TranslateTransform(100.0F, 0.0F);
			e.Graphics.RotateTransform(30.0F);
			//使用RotateTransform方法将指定旋转应用于此Graphics 对象的变换矩阵
			e.Graphics.DrawEllipse(new Pen(Color.Blue, 3), 0, 0,200, 80);
			e.Graphics.RotateTransform(30.0F);
			e.Graphics.ScaleTransform(3.0F, 1.0F, MatrixOrder.Append);
			//使用ScaleTransform方法将指定的缩放操作应用于此Graphics 对象的变换矩阵
			e.Graphics.DrawRectangle(new Pen(Color.Blue, 3), 50, 0, 100, 40);
			testRn = new Region(new Rectangle(0, 0, 100, 100));
			e.Graphics.SetClip(testRn, CombineMode.Replace);
			e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);
			PointF[] pointFA =
 {
	 new PointF(0.0F, 0.0F), 
	 new PointF(100.0F, 50.0F)
 };
			e.Graphics.DrawLine(new Pen(Color.Blue, 
				3),pointFA[0],pointFA[1]);
			e.Graphics.TranslateTransform(40.0F, 30.0F);
			e.Graphics.TransformPoints(CoordinateSpace.Page,
				CoordinateSpace.World,pointFA);
			e.Graphics.ResetTransform();
			//使用ResetTransform方法将此 Graphics 对象的全局变换矩阵重置为单位矩阵
			e.Graphics.DrawLine(new Pen(Color.Red, 
				3),pointFA[0],pointFA[1]);
			testRF = new RectangleF(0.0F, 0.0F, 100.0F, 100.0F);
			e.Graphics.SetClip(testR);
			float dx = 50.0F;
			float dy = 50.0F;
			e.Graphics.TranslateClip(dx, dy);
			//使用TranslateClip方法将此 Graphics 对象的剪辑区域沿水平方向和垂直方向平移指定的量
			e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0,0, 500, 300);
		}


	}
}