本文使用Timer控件制作了一個窗體飄動的程序。
程序設計的思路以及關鍵步驟的解決方法:
定義兩個Timer控件,一個命名為timer1,另外一個命名為timer2。 timer1的作用是控制窗體從左往右飄動,timer2控制窗體從右往左飄動。且兩個Timer控件不能同時啟動。這里先設定timer1組件啟動,當timer1啟動后,每隔0.01秒,都會在觸發的事件中給窗體的左上角的橫坐標都加上"1",這時我們看到的結果是窗體從左往右不斷移動,當移動到一定的位置后,timer1停止。timer2啟動,每隔0.01秒,在觸發定義的事件中給窗體的左上角的橫坐標都減去"1",這時我們看到的結果是窗體從右往左不斷移動。當移動到一定位置后,timer1啟動,timer2停止,如此反覆,這樣窗體也就飄動起來了。
(1)窗體的初始位置
設定窗體的初始位置,是在事件Form1_Load()中進行的。此事件是當窗體加載的時候觸發的。Form有一個DesktopLocation屬性,這個屬性是設定窗體的左上角的二維位置。在程序中是通過Point結構變量來設定此屬性的值,具體如下:
//設定窗體起初飄動的位置,位置為屏幕的坐標的(0,240)
private void Form1_Load ( object sender , System.EventArgs e )
{
Point p = new Point ( 0 , 240 ) ;
this.DesktopLocation = p ;
}
(2)實現窗體從左往右飄動
設定timer1的Interval值為"10",就是當timer1啟動后,每隔0.01秒觸發的事件是timer1_Tick(),在這個事件中編寫給窗體左上角的橫坐標不斷加"1"的代碼,就可以了,具體如下:
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)實現窗體從右往左飄動
代碼設計和從左往右飄動差不多,主要的區別是減"1"而不是加"1"了,具體如下:
//當窗體左上角位置的橫坐標為-150時,timer2停止,timer1啟動
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 ;
}
}
全部源代碼如下:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
namespace WindowsApplication1
{
///<summary>
/// Form1 的摘要說明。
/// 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("華文行楷", 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 體 動 起 來 嘍!";
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("宋體", 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 = "停止飄動";
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("宋體", 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 = "開始飄動";
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#做的飄動的窗體!";
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")
{
timer1.Start( );
timer2.Stop( );
}
else
{
timer1.Stop( );
timer2.Start( );
}
}
}
}
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