用C#做ScreenSaver

王朝c#·作者佚名  2008-05-19
窄屏简体版  字體: |||超大  

/* Program : A Simple Screen Saver

* File Name : ScreenSaver.cs

* Author : Tran Khanh Hien

* Date : 06/20/2001

* email : hientk@yahoo.com

*/

namespace Screen_Saver

{

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.WinForms;

using System.Data;

/// <summary>

/// Summary description for Form1.

/// </summary>

public class ScreenSaver : System.WinForms.Form

{

/// <summary>

/// Required designer variable.

/// </summary>

private System.ComponentModel.Container components;

private System.WinForms.Timer timerSaver;

private System.WinForms.Label lblMarquee;

private int iSpeed = 2;

private string strMarqueeText="C Sharp Screen Saver";

private System.Drawing.Font fontMarquee = new System.Drawing.Font ("Arial", 20,

System.Drawing.FontStyle.Bold);

private Color colorMarquee = System.Drawing.Color.FromARGB(255,255,255);

private int iDistance;

private int ixStart= 0;

private int iyStart= 0;

public ScreenSaver()

{

InitializeComponent();

lblMarquee.Font=fontMarquee;

lblMarquee.ForeColor=colorMarquee;

System.Drawing.Cursor.Hide();

}

/// <summary>

/// Clean up any resources being used.

/// </summary>

public override void Dispose()

{

base.Dispose();

components.Dispose();

}

/// <summary>

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

/// </summary>

private void InitializeComponent()

{

System.Resources.ResourceManager resources = new System.Resources.ResourceManager (typeof

(ScreenSaver));

this.components = new System.ComponentModel.Container ();

this.timerSaver = new System.WinForms.Timer (this.components);

this.lblMarquee = new System.WinForms.Label ();

//@this.TrayHeight = 90;

//@this.TrayLargeIcon = false;

//@this.TrayAutoArrange = true;

//@timerSaver.SetLocation (new System.Drawing.Point (7, 7));

timerSaver.Interval = 1;

timerSaver.Enabled = true;

timerSaver.Tick += new System.EventHandler (this.timerSaver_Tick);

lblMarquee.Location = new System.Drawing.Point (88, 0);

lblMarquee.Size = new System.Drawing.Size (128, 48);

lblMarquee.ForeColor = System.Drawing.Color.White;

lblMarquee.TabIndex = 0;

lblMarquee.Visible = false;

this.MaximizeBox = false;

this.StartPosition = System.WinForms.FormStartPosition.Manual;

this.AutoScaleBaseSize = new System.Drawing.Size (5, 13);

this.BorderStyle = System.WinForms.FormBorderStyle.None;

this.KeyPreview = true;

this.WindowState = System.WinForms.FormWindowState.Maximized;

this.ShowInTaskbar = false;

this.Icon = (System.Drawing.Icon) resources.GetObject ("$this.Icon");

this.ControlBox = false;

this.MinimizeBox = false;

this.BackColor = System.Drawing.Color.Black;

this.ClientSize = new System.Drawing.Size (300, 300);

this.KeyDown += new System.WinForms.KeyEventHandler (this.Form1_KeyDown);

this.MouseDown += new System.WinForms.MouseEventHandler (this.Form1_MouseDown);

this.MouseMove += new System.WinForms.MouseEventHandler (this.Form1_MouseMove);

this.Controls.Add (this.lblMarquee);

}

protected void timerSaver_Tick (object sender, System.EventArgs e)

{

lblMarquee.Text=strMarqueeText;

lblMarquee.Height=lblMarquee.Font.Height;

lblMarquee.Width=lblMarquee.Text.Length*(int)lblMarquee.Font.Size;

PlayScreenSaver();

}

private void PlayScreenSaver()

{

//Get the working area of the the computer screen.

System.Drawing.Rectangle ssWorkArea = System.WinForms.Screen.GetWorkingArea(this);

lblMarquee.Location=new System.Drawing.Point(ssWorkArea.Width - iDistance,

lblMarquee.Location.Y);

//Make the label visible if it is not currently visible.

lblMarquee.Visible=true;

// Increment the label distance based on the speed set by the user.

iDistance += iSpeed;

// If the label is offscreen, then we want to reposition it to the right.

if (lblMarquee.Location.X <= -(lblMarquee.Width))

{

//Reset the distance to 0.

iDistance = 0;

//If the label is at the top, move it to the middle.

if (lblMarquee.Location.Y == 0)

lblMarquee.Location=new System.Drawing.Point(lblMarquee.Location.X,

(ssWorkArea.Height / 2));

// If label is in the middle of the screen move it to the bottom.

else if(lblMarquee.Location.Y== ssWorkArea.Height /2)

lblMarquee.Location=new System.Drawing.Point(lblMarquee.Location.X,ssWorkArea.Height -

lblMarquee.Height);

//Move the label back to the top.

else

lblMarquee.Location=new System.Drawing.Point(lblMarquee.Location.X,0);

}

}

protected void Form1_MouseDown (object sender, System.WinForms.MouseEventArgs e)

{

StopScreenSaver();

}

protected void Form1_MouseMove (object sender, System.WinForms.MouseEventArgs e)

{

// Determine if the mouse cursor position has been stored previously.

if (ixStart == 0 && iyStart == 0)

{

//Store the mouse cursor coordinates.

ixStart = e.X;

iyStart = e.Y;

return;

}

// Has the mouse cursor moved since the screen saver was started?

else if (e.X != ixStart || e.Y != iyStart)

StopScreenSaver();

}

private void StopScreenSaver()

{

System.Drawing.Cursor.Show();

timerSaver.Enabled=false;

Application.Exit();

}

protected void Form1_KeyDown (object sender, System.WinForms.KeyEventArgs e)

{

StopScreenSaver();

}

/// <summary>

/// The main entry point for the application.

/// </summary>

public static void Main(string[] args)

{

if (args.Length==1)

{

//Display the options dialog box.

if (args[0].Substring(0,2).Equals("/c"))

{

MessageBox.Show("Options are not available for this screen saver",

" C# Screen Saver",

MessageBox.IconInformation);

Application.Exit();

}

//Start the screen saver normally.

else if (args[0]=="/s")

Application.Run(new ScreenSaver());

//Diaplay the password dialog

else if (args[0]=="/a")

{

MessageBox.Show("Passwords are not available for this screen saver",

" C# Screen Saver",

MessageBox.IconInformation);

Application.Exit();

}

}

//For any other args --> start.

else

Application.Run(new ScreenSaver());

}

}

}

 
 
 
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