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Form1.cs
资源名称:VC#.NET范例.rar [点击查看]
上传用户:chinafred
上传日期:2007-08-14
资源大小:10127k
文件大小:3k
源码类别:
数据库编程
开发平台:
C#
- using System;
- using System.Drawing;
- using System.Collections;
- using System.ComponentModel;
- using System.Windows.Forms;
- using System.Data;
- using System.Drawing.Imaging;
- using System.Drawing.Drawing2D;
- namespace ch2_6
- {
- /// <summary>
- /// Form1 的摘要说明。
- /// </summary>
- public class Form1 : System.Windows.Forms.Form
- {
- /// <summary>
- /// 必需的设计器变量。
- /// </summary>
- private System.ComponentModel.Container components = null;
- private System.Windows.Forms.Button button1;
- private Image bm;
- public Form1()
- {
- //
- // Windows 窗体设计器支持所必需的
- //
- InitializeComponent();
- string s="football.jpg";
- bm= new Bitmap(s);
- //
- // 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 Form Designer generated code
- /// <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.button1 = new System.Windows.Forms.Button();
- this.SuspendLayout();
- //
- // button1
- //
- this.button1.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
- this.button1.Location = new System.Drawing.Point(400, 344);
- this.button1.Name = "button1";
- this.button1.Size = new System.Drawing.Size(96, 48);
- this.button1.TabIndex = 0;
- this.button1.Text = "保存图像";
- this.button1.Click += new System.EventHandler(this.button1_Click);
- //
- // Form1
- //
- this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
- this.ClientSize = new System.Drawing.Size(544, 513);
- this.Controls.AddRange(new System.Windows.Forms.Control[] {
- this.button1});
- this.Name = "Form1";
- this.Text = "图像显示与保存";
- this.ResumeLayout(false);
- }
- #endregion
- /// <summary>
- /// 应用程序的主入口点。
- /// </summary>
- [STAThread]
- protected override void OnPaint(PaintEventArgs e)
- {
- Graphics g=e.Graphics;
- e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
- g.FillRectangle(new SolidBrush(Color.White), this.ClientRectangle);
- //绘制图片
- g.DrawImage(bm,0,0,bm.Width,bm.Height);
- //绘制一个只有原图1/3大小的图片
- g.DrawImage(bm,0,340,(int)(bm.Width/3),(int)(bm.Height/3));
- //现在旋转该图像
- g.RotateTransform(-30);
- //设置平移距离
- g.TranslateTransform(210,420,MatrixOrder.Append);
- //显示图像
- g.DrawImage(bm,0, 0,(int)(bm.Width/3),(int)(bm.Height/3));
- g.ResetTransform();
- }
- static void Main()
- {
- Application.Run(new Form1());
- }
- private void button1_Click(object sender, System.EventArgs e)
- {
- //构造一个和要保存图片尺寸相同的图像
- Bitmap image = new Bitmap(this.bm.Width, this.bm.Height);
- //获取Graphics对象
- Graphics g = Graphics.FromImage(image);
- g.Clear(this.BackColor);
- //调用Form1_Paint方法在图像上绘制图形
- Rectangle rect=new Rectangle(0,0,this.bm.Width,this.bm.Height);
- OnPaint(new PaintEventArgs(g,rect));
- //保存图像
- image.Save("SavedFootball.jpg", ImageFormat.Jpeg);
- MessageBox.Show("图片已经保存到当前项目的bin\Debug目录下,名为SavedFootball.jpg");
- }
- }
- }