protected override void WndProc(ref Message m)//注意是保护类型的过程
{
const int WM_HOTKEY = 0x0312;
}
if (m.Msg == WM_HOTKEY & & m.WParam.ToInt32() == 247696411) //判断热键消息是不是我们设置的
{
Application.Exit();//如果消息等于我们的热键消息,程序退出
}
base.WndProc(ref m);//其他消息返回做默认处理
好了,通过以上一些步骤,我们就基本完成了这个屏幕保护程序的要点设计,其他的详细过程可以参考源码,程序运行的时候背景是透明的,这个也不难实现
1.this.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(192)))), ((int)(((byte)(192)))));
2.this.TransparencyKey = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(192)))), ((int)(((byte)(192)))));
屏幕保护程序代码如下：
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Runtime.InteropServices;
/*
屏幕保护程序
使用技术：系统热键，随机数，Graphics类绘制圆形
编译环境：VisualStudio 2005
运行要求：安装.net framework 2.0 框架
其他：使用ESC退出
说明：由于使用了循环控制图形位移，CPU占用在20%-30%左右
程序具有自动垃圾回收机制避免造成内存溢出
2009年3月15日
*/
namespace AnimatBall
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
public int[,] ballarray = new int[20,20];
public string[] colours = new string[16];
public Bitmap bmp;
private System.Windows.Forms.Timer timer1;
private System.ComponentModel.IContainer components;
[DllImport("user32.dll")]
public static extern UInt32 RegisterHotKey(IntPtr hWnd, UInt32 id, UInt32 fsModifiers, UInt32 vk); //API
//重写消息循环
protected override void WndProc(ref Message m)
{
const int WM_HOTKEY = 0x0312;
if (m.Msg == WM_HOTKEY && m.WParam.ToInt32() == 247696411) //判断热键
{
Application.Exit();
}
base.WndProc(ref m);
}
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//colours[0]="Red";
colours[1]="Red";
colours[2]="Blue";
colours[3]="Black";
colours[4]="Yellow";
colours[5]="Crimson";
colours[6]="Gold";
colours[7]="Green";
colours[8]="Magenta";
colours[9]="Aquamarine";
colours[10]="Brown";
colours[11]="Red";
colours[12]="DarkBlue";
colours[13]="Brown";
colours[14]="Red";
colours[15]="DarkBlue";
InitializeComponent();
RegisterHotKey(this.Handle, 247696411, 0, (UInt32)Keys.Escape); //注册热键
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.timer1 = new System.Windows.Forms.Timer(this.components);
this.SuspendLayout();
//
// timer1
//
this.timer1.Interval = 25;
this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(192)))), ((int)(((byte)(192)))));
this.ClientSize = new System.Drawing.Size(373, 294);
this.DoubleBuffered = true;
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
this.Name = "Form1";
this.ShowInTaskbar = false;
this.Text = "小焱屏幕保护";
this.TopMost = true;
this.TransparencyKey = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(192)))), ((int)(((byte)(192)))));
this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void timer1_Tick(object sender, System.EventArgs e)
{
for (int i=1;i<=13;i++)
{
//add direction vectors to coordinates
ballarray[i,1] = ballarray[i,1] + ballarray[i,3];
ballarray[i,2] = ballarray[i,2] + ballarray[i,4];
//if ball goes of to right
if ((ballarray[i,1]+50)>=ClientSize.Width)
{
ballarray[i,1]=ballarray[i,1]-ballarray[i,3];
ballarray[i,3]=-ballarray[i,3];
}
//if ball goes off bottom
else if ((ballarray[i,2]+50)>=ClientSize.Height)
{
ballarray[i,2]=ballarray[i,2]-ballarray[i,4];
ballarray[i,4]=-ballarray[i,4];
}
//if ball goes off to left
else if (ballarray[i,1]<=1)
{
ballarray[i,1]=ballarray[i,1]-ballarray[i,3];
ballarray[i,3]=-ballarray[i,3];
}
//if ball goes over top
else if (ballarray[i,2]<=1)
{
ballarray[i,2]=ballarray[i,2]-ballarray[i,4];
ballarray[i,4]=-ballarray[i,4];
}
}
this.Refresh(); //force repaint of window
}
//Called from timer event when window needs redrawing
protected override void OnPaint(PaintEventArgs e)
{
Random ra = new Random();
bmp = new Bitmap(ClientSize.Width,ClientSize.Height, e.Graphics);
Graphics bmpGraphics = Graphics.FromImage(bmp);
// draw here
for (int i=1;i<=13;i++)
{
bmpGraphics.DrawEllipse(new Pen(Color.FromName(colours[i]),2),
ballarray[i, 1], ballarray[i, 2], 70+ra.Next(1, 10), 70+ra.Next(1, 10));//利用随机数产生粘滞效果
}
e.Graphics.DrawImageUnscaled(bmp, 0, 0);
//Draw ellipse acording to mouse coords.
bmpGraphics.Dispose();
bmp.Dispose();
}
private void Form1_Load(object sender, EventArgs e)
{
Random r = new Random();
//set ball coords and vectors x,y,xv,yv
for (int i = 1; i <= 13; i++)
{
ballarray[i, 1] = +r.Next(10) + 1; //+1 means i lose zero values
ballarray[i, 2] = +r.Next(10) + 1;
ballarray[i, 3] = +r.Next(10) + 1;
ballarray[i, 4] = +r.Next(10) + 1;
}
timer1.Start();
}
}
}
