C#像QQ一样隐藏窗体

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Runtime.InteropServices;

namespace FormHide

{

public partial class AutoHideForm : Form

{

public AutoHideForm()

{

InitializeComponent();

}

#region 公共变量

IntPtr Tem_Handle; //获取控件及窗体句柄

Point CPoint; //获取控件中鼠标的坐标

#endregion

#region API声明

//获取当前鼠标下可视化控件的句柄

[DllImport("User32.dll ")]

private static extern IntPtr WindowFromPoint(int xPoint, int yPoint);

//获取指定句柄的父级句柄

[DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]

public static extern IntPtr GetParent(IntPtr hWnd);

//获取屏幕的大小

[DllImport("user32.dll", EntryPoint = "GetSystemMetrics")]

public static extern int GetSystemMetrics(int mVal);

#endregion

#region 获取当前鼠标下可视化控件的句柄

/// <summary>

/// 获取当前鼠标下可视化控件的句柄

/// </summary>

/// <param name="x">当前鼠标的X坐标</param>

/// <param name="y">当前鼠标的Y坐标</param>

/// <returns>父级句柄</returns>

public IntPtr FormNameAt(int x, int y)

{

IntPtr Tem_hWnd;//设置存储句柄变量

Tem_Handle = (IntPtr)(WindowFromPoint(x, y));//获取当前鼠标下可视化控件的句柄

Tem_hWnd = Tem_Handle;//记录原始句柄

while (Tem_hWnd != ((IntPtr)0))//遍历该句柄的父级句柄

{

Tem_Handle = Tem_hWnd;//记录当前句柄

Tem_hWnd = GetParent(Tem_hWnd);//获取父级句柄

}

return Tem_Handle;//返回最底层的父级句柄

}

#endregion

private void pnlTitle_MouseDown(object sender, MouseEventArgs e)

{

timer1.Enabled = false;

CPoint = new Point(-e.X, -e.Y);

}

#region 拖动窗体

/// <summary>

/// 利用控件移动窗体

/// </summary>

/// <param name="Frm">当前窗体</param>

/// <param name="e">鼠标移动事件</param>

public void FormMove(Form Frm, MouseEventArgs e)

{

if (e.Button == MouseButtons.Left)

{

Point myPosition = Control.MousePosition; //定义变量用于获取当前鼠标坐标

myPosition.Offset(CPoint.X, CPoint.Y); //重载当前鼠标位置,Offset表位移

Frm.DesktopLocation = myPosition; //移动当前窗体位置，即拖动窗体

}

}

#endregion

private void pnlTitle_MouseMove(object sender, MouseEventArgs e)

{

FormMove(this, e);

}

private void pnlTitle_MouseUp(object sender, MouseEventArgs e)

{

timer1.Enabled = true;

}

private void timer1_Tick(object sender, EventArgs e)

{

if (this.Top < 3) //如果窗体被移至屏幕顶部

{

if (this.Handle == FormNameAt(Cursor.Position.X, Cursor.Position.Y)) //当鼠标移至该窗体

{

pnlTitle.Tag = 1; //设置标识，用于判断窗体再屏幕顶端

timer2.Enabled = false; //不对窗体进行拉伸操作

while (this.Top < -10)

this.Top += 10;

this.Top = 0;//使窗体置顶

}

else

{

pnlTitle.Tag = 1; //设置标识，用于判断窗体再屏幕顶端

timer2.Enabled = true; //将窗体顶部进行拉伸操作

}

}

else

{

if (this.Left < 3 || this.Right > GetSystemMetrics(0) - 3) //若果窗体被移至屏幕左端或者右端

{

if (this.Left < 3) //如果窗体被移至屏幕左端

{

if (this.Handle == FormNameAt(Cursor.Position.X, Cursor.Position.Y)) //当鼠标移至该窗体

{

pnlTitle.Tag = 2; //设置标识，用于判断窗体再屏幕左端

timer2.Enabled = false; //不对窗体进行拉伸操作

while (this.Left < -10)

this.Left += 10;

this.Left = 0;//使窗体至左

}

else

{

pnlTitle.Tag = 2; //设置标识，用于判断窗体再屏幕顶端

timer2.Enabled = true; //将窗体顶部进行拉伸操作

}

}

if (this.Right > GetSystemMetrics(0) - 3) //若果窗体被移至屏幕右端

{

if (this.Handle == FormNameAt(Cursor.Position.X, Cursor.Position.Y)) //当鼠标移至该窗体

{

pnlTitle.Tag = 3; //设置标识，用于判断窗体再屏幕顶端

timer2.Enabled = false; //不对窗体进行拉伸操作

while (this.Left > GetSystemMetrics(0) - this.Width + 10)

this.Left -= 10;

this.Left = GetSystemMetrics(0) - this.Width;//使窗体至右

}

else

{

pnlTitle.Tag = 3; //设置标识，用于判断窗体再屏幕右端

timer2.Enabled = true; //将窗体顶部进行拉伸操作

}

}

}

}

}

private void timer2_Tick(object sender, EventArgs e) //对窗体进行隐藏

{

switch (Convert.ToInt16(pnlTitle.Tag.ToString())) //对标识进行判断

{

case 1: //顶端隐藏

{

if (this.Top < 5)

while (this.Top > -(this.Height - 2))

this.Top--;

break;

}

case 2: //左端隐藏

{

if (this.Left < 5)

while (this.Left > -(this.Width - 2))

this.Left--;

break;

}

case 3: //右端隐藏

{

if ((this.Left + this.Width) > (GetSystemMetrics(0) - 5))

while (this.Left < GetSystemMetrics(0) - 2)

this.Left++;

break;

}

}

}

private void pnlClose_Click(object sender, EventArgs e)

{

Application.Exit();

}

private void AutoHideForm_KeyUp(object sender, KeyEventArgs e)

{

if (e.KeyData == Keys.Escape)

Application.Exit();

}

}

}