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C#中Timer组件用法

作者:佚名    文章来源:网络转载    更新时间 :2007-11-25 13:34:56

本文介绍的程序,是用Visual C#做的一个窗体飘动的程序,这其中就大量的使用了Timer组件。

下面就来介绍一下,这个程序的设计和运行的环境。

. 程序设计的思路以及关键步骤的解决方法:

     其实要使得程序的窗体飘动起来,其实思路是比较简单的。首先是当加载窗体的时候,给窗体设定一个显示的初始位置。然后通过在窗体中定义的二个Timer组件,其中一个叫Timer1,其作用是控制窗体从左往右飘动(当然如果你愿意,你也可以改为从上往下飘动,或者其他的飘动方式。),另外一个Timer2是控制窗体从右往左飘动(同样你也可以改为其他飘动方式)。当然这二个Timer组件不能同时启动,在本文的程序中,是先设定Timer1组件启动的,当此Timer1启动后,每隔0.01秒,都会在触发的事件中给窗体的左上角的横坐标都加上"1",这时我们看到的结果是窗体从左往右不断移动,当移动到一定的位置后,Timer1停止。Timer2启动,每隔0.01秒,在触发定义的事件中给窗体的左上角的横坐标都减去"1",这时我们看到的结果是窗体从右往左不断移动。当移动到一定位置后,Timer1启动,Timer2停止,如此反覆,这样窗体也就飘动起来了。要实现上述思路,必须解决好以下问题。

(1).如何设定窗体的初始位置:

      设定窗体的初始位置,是在事件Form1_Load()中进行的。此事件是当窗体加载的时候触发的。Form有一个DesktopLocation属性,这个属性是设定窗体的左上角的二维位置。在程序中是通过Point结构变量来设定此属性的值,具体如下:

//设定窗体起初飘动的位置,位置为屏幕的坐标的(0,240)

private void Form1_Load ( object sender , System.EventArgs e )
 
         {
              Point p = new Point ( 0 , 240 ) ;
 
              this.DesktopLocation = p ;
 
         }  


(2). 如何实现窗体从左往右飘动:

设定Timer1的Interval值为"10",就是当Timer1启动后,每隔0.01秒触发的事件是Timer1_Tick(),在这个事件中编写给窗体左上角的横坐标不断加"1"的代码,就可以了,具体如下:
private void timer1_Tick(object sender, System.EventArgs e)
 
         {
              Point p = new Point ( this.DesktopLocation.X + 1 , this.DesktopLocation.Y ) ;
 
              this.DesktopLocation = p ;
 
              if ( p.X == 550 )
 
              {
                   timer1.Enabled = false ;
 
                   timer2.Enabled = true ;
              }
         }

 


(3). 如何实现窗体从右往左飘动:

代码设计和从左往右飘动差不多,主要的区别是减"1"而不是加"1"了,具体如下:
//当窗体左上角位置的横坐标为-150时,timer2停止,timer1启动

 


         private void timer2_Tick(object sender, System.EventArgs e)
 
         {
 
              Point p = new Point ( this.DesktopLocation.X - 1 , this.DesktopLocation.Y ) ;
 
              this.DesktopLocation = p ;
 
              if ( p.X == - 150 )
 
              {
 
                   timer1.Enabled = true ;
 
                   timer2.Enabled = false ;
 
              }
 
         }
 


用Visual C#编写窗体飘动程序的源代码:

通过上面的介绍,不难写出窗体飘动的程序源代码。运行效果与代码如下:

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
 
namespace WindowsApplication1
{
     ///<summary>
     /// Form1 的摘要说明。
     /// 作者: Shadow
     /// 2006-8-3
     ///</summary>
     public class Form1 : System.Windows.Forms.Form
     {
        
          private Timer timer1 ;
 
          private Timer timer2 ;
 
          private Label label1 ;
 
          private Button button1 ;
          private System.Windows.Forms.Button button2;
 
          private System.ComponentModel.IContainer components ;
 
          private string remarkStatus = "";
 
         public Form1 ( )
 
         {
              InitializeComponent ( ) ;
         }
 
          protected override void Dispose ( bool disposing )
 
         {
 
              if ( disposing )
 
              {
 
                   if ( components != null )
 
                   {
 
                        components.Dispose ( ) ;
 
                   }
 
              }
 
              base.Dispose( disposing ) ;
 
         }
 
 
          private void InitializeComponent ( )
 
         {
              this.components = new System.ComponentModel.Container();
              System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
              this.timer1 = new System.Windows.Forms.Timer(this.components);
              this.timer2 = new System.Windows.Forms.Timer(this.components);
              this.label1 = new System.Windows.Forms.Label();
              this.button1 = new System.Windows.Forms.Button();
              this.button2 = new System.Windows.Forms.Button();
              this.SuspendLayout();
              //
              // timer1
              //
              this.timer1.Enabled = true;
              this.timer1.Interval = 10;
              this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
              //
              // timer2
              //
              this.timer2.Interval = 10;
              this.timer2.Tick += new System.EventHandler(this.timer2_Tick);
              //
              // label1
              //
              this.label1.BackColor = System.Drawing.Color.Transparent;
              this.label1.Font = new System.Drawing.Font("华文行楷", 21.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
              this.label1.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(0)), ((System.Byte)(0)), ((System.Byte)(192)));
              this.label1.Location = new System.Drawing.Point(16, 88);
              this.label1.Name = "label1";
              this.label1.Size = new System.Drawing.Size(438, 39);
              this.label1.TabIndex = 1;
              this.label1.Text = "窗 体 动 起 来 喽!";
              this.label1.TextAlign = System.Drawing.ContentAlignment.TopCenter;
              //
              // button1
              //
              this.button1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
              this.button1.Font = new System.Drawing.Font("宋体", 10F);
              this.button1.ForeColor = System.Drawing.Color.Blue;
              this.button1.Location = new System.Drawing.Point(96, 24);
              this.button1.Name = "button1";
              this.button1.Size = new System.Drawing.Size(96, 27);
              this.button1.TabIndex = 0;
              this.button1.Text = "停止飘动";
              this.button1.Click += new System.EventHandler(this.button1_Click);
              //
              // button2
              //
              this.button2.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
              this.button2.Font = new System.Drawing.Font("宋体", 10F);
              this.button2.ForeColor = System.Drawing.Color.Blue;
              this.button2.Location = new System.Drawing.Point(368, 24);
              this.button2.Name = "button2";
              this.button2.Size = new System.Drawing.Size(96, 27);
              this.button2.TabIndex = 2;
              this.button2.Text = "开始飘动";
              this.button2.Click += new System.EventHandler(this.button2_Click);
              //
              // Form1
              //
              this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
              this.BackColor = System.Drawing.Color.Silver;
              this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage")));
              this.ClientSize = new System.Drawing.Size(488, 165);
              this.Controls.Add(this.button2);
              this.Controls.Add(this.label1);
              this.Controls.Add(this.button1);
              this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
              this.Name = "Form1";
              this.Text = " Shadow用C#做的飘动的窗体!";
              this.Load += new System.EventHandler(this.Form1_Load);
              this.ResumeLayout(false);
 
         }
 
 
         static void Main ( )
 
         {
 
              Application.Run ( new Form1 ( ) ) ;
         }
 
 
          private void Form1_Load ( object sender , System.EventArgs e )
 
         {
              Point p = new Point ( 0 , 240 ) ;
 
              this.DesktopLocation = p ;
 
         }
 
 
          private void timer1_Tick(object sender, System.EventArgs e)
 
         {
              Point p = new Point ( this.DesktopLocation.X + 1 , this.DesktopLocation.Y ) ;
 
              this.DesktopLocation = p ;
 
              if ( p.X == 550 )
 
              {
                   timer1.Enabled = false ;
 
                   timer2.Enabled = true ;
              }
         }
     private void timer2_Tick(object sender, System.EventArgs e)
 
         {
 
              Point p = new Point ( this.DesktopLocation.X - 1 , this.DesktopLocation.Y ) ;
 
              this.DesktopLocation = p ;
 
              if ( p.X == - 150 )
 
              {
 
                   timer1.Enabled = true ;
 
                   timer2.Enabled = false ;
 
              }
 
         }
private void button1_Click(object sender, System.EventArgs e)
 
         {
              if(timer1.Enabled==true)
                   remarkStatus = "timer1";
              else if(timer2.Enabled == true)
     remarkStatus = "timer2";
 
              timer1.Stop ( ) ;
 
              timer2.Stop ( ) ;
 
         }
 
          private void button2_Click(object sender, System.EventArgs e)
         {
              if(remarkStatus == "timer1")
            

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