用Visual C#编写屏幕保护程序

http://tech.ddvip.com   2006年08月01日    社区交流

本文详细介绍用Visual C#编写屏幕保护程序

  Visual C#是微软公司推出的新一代程序开发语言,是微软.Net框架中的一个重要组成部分。屏幕保护程序是以scr为扩展名的标准Windows可执行程序。屏幕保护程序不仅可以延长显示器的使用寿命,还可以保护私人信息。本文向大家介绍一个.Net平台上用C#编写的一个动态文本及图形的屏幕保护程序。

  一、具体实现步骤:

  (1)在Visual Studio.Net下新建一个C#的Windows应用程序工程,不妨命名为screen_saver。

  (2)现在我们来设计程序的主界面:

  先将窗体的Name属性设置为screen、Text属性设置为空,BackColor属性设置为Black、Size属性设置为(800, 600)、 ControlBox、MaximizeBox、MinimizeBox、ShowInTaskbar属性设置均为false、FormBorderStyle属性设置为None。再往窗体上添加Label控件、PictureBox控件、Timer控件各一个。将Label控件的Name设置为word、Text属性设置为空;将PictureBox控件的Name设置为picture1、Image设置为一个预知图片;将Timer控件的Name设置为timerSaver、Enabled 属性设为true、Interval属性设为5。

  (3)现在我们开始编写完整程序代码部分:

  //导入使用到的名称空间
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
file://
   namespace screen_saver
   {
///
/// Form1 的摘要说明。
///
public class screen : System.Windows.Forms.Form
{
 file://加入私有成员变量
 private System.ComponentModel.IContainer components;
 private int iSpeed = 2;
 private string str="福建南纺股份公司计算机中心";
 file://定义文本字体及大小
 private System.Drawing.Font TextStringFont = new System.Drawing.Font ("宋体”, 10,System.Drawing.FontStyle.Bold);
 private Color TextStringcolor =System.Drawing.Color.Yellow; file://文本字体颜色
 private int iDistance;
 private int ixStart= 0;
 private int iyStart= 0;
 private int speed;
 private int x1,y1;
 int width1,height1;
 private System.Windows.Forms.Timer timerSaver;  file://计时器控件
 private System.Windows.Forms.PictureBox picture1; file://图形控件
 private System.Windows.Forms.Label word; file://文本显示控件
///
/// 必需的设计器变量。
///
 public screen()
 {
 file://
 // Windows 窗体设计器支持所必需的
 file://
  InitializeComponent();
  word.Font=TextStringFont;
  word.ForeColor=TextStringcolor;
  System.Windows.Forms.Cursor.Hide(); file://隐藏光标
  file://
  // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
  file://
 }
  ///
 /// 清理所有正在使用的资源。
 ///
 protected override void Dispose( bool disposing )
 {
  if( disposing )
  {
   if (components != null)
   {
    components.Dispose();
   }
  }
  base.Dispose( disposing );
 }
 #region Windows Form Designer generated code
 ///
 /// 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。
 ///
 private void InitializeComponent() file://初始化程序中使用到的组件
 {
  this.components = new System.ComponentModel.Container();
  System.Resources.ResourceManager resources = new   system.Resources.ResourceManger(typeof(screen));      
  this.word = new System.Windows.Forms.Label();
  this.timerSaver = new System.Windows.Forms.Timer(this.components);
  this.picture1 = new System.Windows.Forms.PictureBox();
  this.SuspendLayout();
  //
  // 设置文本显示控件(word)属性
  this.word.ForeColor = System.Drawing.Color.Yellow;
  this.word.Location = new System.Drawing.Point(624, 8);
  this.word.Name = "word";
  this.word.Size = new System.Drawing.Size(168, 16);
  this.word.TabIndex = 0;
  this.word.Visible = false;
  //
  // 设置计时器控件(timerSaver)属性
  this.timerSaver.Enabled = true;
  this.timerSaver.Interval = 5;
  this.timerSaver.Tick += new System.EventHandler(this.timerSaver_Tick);
  //
  // 设置图片控件(picture1)属性
  this.picture1.Image = ((System.Drawing.Bitmap)(resources.GetObject("picture1.Image")));
  this.picture1.Location = new System.Drawing.Point(800, 600);
  this.picture1.Name = "picture1";
  this.picture1.Size = new System.Drawing.Size(304, 224);
  this.picture1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
  this.picture1.TabIndex = 1;
  this.picture1.TabStop = false;
  //
  // 设置窗体(screen)属性
  this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
  this.BackColor = System.Drawing.Color.Black;
  this.ClientSize = new System.Drawing.Size(800, 600);
  this.ControlBox = false;
  this.Controls.AddRange(new System.Windows.Forms.Control[] {this.picture1,this.word});
  this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
  this.KeyPreview = true;
  this.MaximizeBox = false;
  this.MinimizeBox = false;
  this.Name = "screen";
  this.ShowInTaskbar = false;
  this.StartPosition = System.Windows.Forms.FormStartPosition.Manual;
  this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
  file://键盘按下响应事件
  this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.screen_KeyDown);
            file://鼠标按下响应事件
 
  this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.screen_MouseDown);
  file://窗体启动调用事件
  this.Load += new System.EventHandler(this.Form1_Load);
            file://鼠标移动响应事件
  this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.screen_MouseMove);
  this.ResumeLayout(false);
 }
 #endregion
 ///
 /// 应用程序的主入口点。
 ///
 [STAThread]
 static void Main(string[] args)
 {
  if(args.Length==1)
   if(args[0].Substring(0,2).Equals("/c"))
   {
    MessageBox.Show("没有设置项功能","C# Screen Saver");
    Application.Exit();
   }
   else if(args[0]=="/s")
   Application.Run(new screen());
  else if(args[0]=="/a")
  {
   MessageBox.Show("没有口令功能","C# Screen saver");
   Application.Exit();
  }
  else
  Application.Run(new screen());
 }
 private void Form1_Load(object sender, System.EventArgs e)
 {
  speed=0;
  System.Drawing.Rectangle ssWorkArea=System.Windows.Forms.Screen.GetWorkingArea(this);
  file://屏幕显示区域
  width1=ssWorkArea.Width; file://屏幕宽度
  height1=ssWorkArea.Height; file://屏幕高度
 }
 private void timerSaver_Tick(object sender, System.EventArgs e) file://计时器响应事件
 {
  word.Visible=true;
  word.Text=str;
  word.Height=word.Font.Height; file://设置文本的高度
  word.Width=word.Text.Length*(int)word.Font.Size*2; file://设置文本的宽度
  PlayScreenSaver();
 }
 private void PlayScreenSaver() file://自定义函数
 {
  file://下面设置文本显示框的位置坐标
  word.Location =new System.Drawing.Point(width1-iDistance,word.Location.Y);
  word.Visible=true; file://设置为可见
  iDistance+=iSpeed;
  if(word.Location.X<=-(word.Width))
  {
   iDistance=0;
   if(word.Location.Y==0)
    word.Location=new System.Drawing.Point(word.Location.X,height1/2);
   else if(word.Location.Y==height1/2)
    word.Location=new System.Drawing.Point(word.Location.X,height1-word.Height);
   else
    word.Location=new System.Drawing.Point(word.Location.X,0);
  }
  file://下面是计算图片框移动坐标
  speed++;
  if(speed<=2*height1)
  {
   x1=System.Math.Abs(width1-speed);
   y1=System.Math.Abs(height1-speed);
  }
  else if(speed>2*height1 && speed<=2*width1)
  {
   x1=System.Math.Abs(width1-speed);
   y1=System.Math.Abs(height1-(speed-speed/height1*height1));
  }
  else if(speed>2*width1 &&speed<=3*height1)
  {
   x1=System.Math.Abs(width1-(speed-speed/width1*width1));
   y1=System.Math.Abs(height1-(speed-speed/height1*height1));
  }
  else if(speed>3*height1 && speed<4*height1)
  {
   x1=System.Math.Abs(width1-(speed-speed/width1*width1));
   y1=System.Math.Abs(speed-speed/height1*height1);
  }
  else if(speed>=4*height1 && speed<5*height1)
  {
   x1=System.Math.Abs(speed-speed/width1*width1);
   y1=System.Math.Abs(height1-(speed-speed/height1*height1));
  }
  else if(speed>=5*height1 && speed<4*width1)
  {
   x1=System.Math.Abs(speed-speed/width1*width1);
   y1=System.Math.Abs(speed-speed/height1*height1);
  }
  else if(speed>=4*width1 && speed<6*height1)
  {
   x1=System.Math.Abs(width1-(speed-speed/width1*width1));
   y1=System.Math.Abs(speed-speed/height1*height1);
  }
  else if(speed>=6*height1 && speed<5*width1)
  {
   x1=System.Math.Abs(width1-(speed-speed/width1*width1));
   y1=System.Math.Abs(height1-(speed-speed/height1*height1));
  }
  else if(speed>=5*width1 && speed<7*height1)
  {
   x1=System.Math.Abs(speed-speed/width1*width1);
   y1=System.Math.Abs(height1-(speed-speed/height1*height1));
  }
  else if(speed>=7*height1 && speed<6*width1)
  {
   x1=System.Math.Abs(speed-speed/width1*width1);
   y1=System.Math.Abs(speed-speed/height1*height1);
  }
  if(speed==6*width1)
  speed=0;
  picture1.Location=new System.Drawing.Point(x1,y1);
 }
 private void StopScreenSaver() file://停止屏幕保护程序运行
 {
  System.Windows.Forms.Cursor.Show();
  timerSaver.Enabled=false;
  Application.Exit();
 }
 private void screen_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e) 
 file://鼠标移动事件
 {
  if(ixStart==0 && iyStart==0)
  {
   ixStart=e.X;
   iyStart=e.Y;
   return;
  }
  else if(e.X!=ixStart||e.Y!=iyStart)
  StopScreenSaver();
 }
 private void screen_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
 file://鼠标按下事件
 {
  StopScreenSaver(); file://停止运行屏幕保护程序
 }
 private void screen_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e) 
 file://键盘按下事件
 {
  StopScreenSaver(); file://停止运行屏幕保护程序
 }
}
}

来源:yesky    作者:黄建志    责编:豆豆技术应用

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