C#如何实现类似QQ那样靠边隐藏的功能

源代码下载地址

你想过为自己的程序添加靠边隐藏的功能吗？还在为计算窗体的大小及位置而烦恼吗？想这么简单的轻松调用吗？

DockWindow.FormDockTemplate m_oDockFormTemplate = new DockWindow.FormDockTemplate(this);

不用吃惊，您只需要在你的窗体初始化的时候（也就是窗体构造函数里添加上述这一行代码）您的程序就可以轻松拥有靠边自动隐藏的功能。

下面我就给各位共享一个我自己经常用的靠边停靠的窗体类，详细见如下代码：

FormDockTemplate.cs文件：

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Drawing;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Windows.Forms;
namespace DockWindow
{
public enum Enu_FormDockStyle
{
None = 0,
Left = 1,
Top = 2,
Right = 3,
Bottom = 4,
}
[Serializable]
public class FormStartInfo
{
[NonSerialized]
private Form m_frmDockWindow = null;
private string m_strSerialFileName = string.Empty;
private Size m_szFormSize = Size.Empty;
private Point m_ptFormLocation = Point.Empty;
private Enu_FormDockStyle m_iDockStyle = Enu_FormDockStyle.None;
private bool m_bFormVisible = false;

/// <summary>
/// 构造函数
/// </summary>
/// <param name="frmItem">停靠的窗体对象</param>
public FormStartInfo(Form frmItem)
{
try
{
m_frmDockWindow = frmItem;
if (null == frmItem) m_strSerialFileName = "StartInfo.dat";
else m_strSerialFileName = frmItem.Name + frmItem.Text + "_StartInfo.dat";
}
catch { }
}
/// <summary>
/// 窗体大小
/// </summary>
public Size FormSize
{
get { return m_szFormSize; }
internal set { m_szFormSize = value; }
}
/// <summary>
/// 窗体位置坐标
/// </summary>
public Point FormLocation
{
get { return m_ptFormLocation; }
internal set { m_ptFormLocation = value; }
}
/// <summary>
/// 停靠方式
/// </summary>
public Enu_FormDockStyle DockStyle
{
get { return m_iDockStyle; }
internal set { m_iDockStyle = value; }
}
/// <summary>
/// 表示窗体是否自动隐藏
/// </summary>
public bool FormVisible
{
get { return m_bFormVisible; }
}
/// <summary>
/// 序列化此类的实例信息
/// </summary>
/// <param name="frmStartInfo"></param>
public static void Serialize(FormStartInfo frmStartInfo)
{
using (FileStream fs = new FileStream(frmStartInfo.m_strSerialFileName, FileMode.OpenOrCreate))
{
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(fs, frmStartInfo);
}
}
/// <summary>
/// 反序列化此类的实例信息
/// </summary>
/// <param name="frmStartInfo"></param>
public static void Deserialize(ref FormStartInfo frmStartInfo)
{
FormStartInfo frmTemp = null;
if (null == frmStartInfo) return;
using (FileStream fs = new FileStream(frmStartInfo.m_strSerialFileName, FileMode.Open))
{
BinaryFormatter bf = new BinaryFormatter();
frmTemp = (FormStartInfo)bf.Deserialize(fs);
if (null != frmTemp) frmStartInfo = frmTemp;
}
}
/// <summary>
/// 显示或隐藏停靠窗口
/// </summary>
public void ShowDockWindow(IntPtr hwnd, bool bVisible)
{
Point ptLocation = Point.Empty;
Size szFormSize = Size.Empty;
m_bFormVisible = bVisible;
if (m_frmDockWindow == null) m_frmDockWindow = (Form)Control.FromHandle(hwnd);
if (m_frmDockWindow == null) return;

GetDockWindowClientRect(ref ptLocation, ref szFormSize, bVisible);
m_frmDockWindow.TopMost = (m_iDockStyle != Enu_FormDockStyle.None);
m_frmDockWindow.Location = ptLocation;
m_frmDockWindow.Width = szFormSize.Width;
m_frmDockWindow.Height = szFormSize.Height;
}
/// <summary>
/// 根据当前窗体的停靠方式来计算出当前窗体的大小及位置
/// </summary>
/// <param name="ptLocation">窗体位置</param>
/// <param name="szFormSize">窗体大小</param>
/// <param name="bDockWindowVisible">显示还是隐藏</param>
private void GetDockWindowClientRect(ref Point ptLocation, ref Size szFormSize, bool bDockWindowVisible)
{
int iTorrentPixel = 0;
int iWindowTitleHeight = SystemInformation.CaptionHeight;

//获取屏幕可用区域
User32.RECT rectWorkArea = new User32.RECT();
User32.SystemParametersInfo((uint)User32.Enu_SystemParametersInfo_Action.SPI_GETWORKAREA, 0, ref rectWorkArea, 0);
Rectangle rcWorkArea = new Rectangle(rectWorkArea.left, rectWorkArea.top, rectWorkArea.right - rectWorkArea.left, rectWorkArea.bottom - rectWorkArea.top);
Rectangle rcScreenArea = Screen.PrimaryScreen.Bounds;
if (m_ptFormLocation.X < 0) m_ptFormLocation.X = 0;
if (m_ptFormLocation.Y < 0) m_ptFormLocation.Y = 0;
if (!bDockWindowVisible)
{
switch (m_iDockStyle)
{
case Enu_FormDockStyle.None:
ptLocation = m_ptFormLocation;
szFormSize = m_szFormSize;
break;
case Enu_FormDockStyle.Left:
ptLocation = new Point(m_ptFormLocation.X - m_szFormSize.Width + SystemInformation.FrameBorderSize.Width + iTorrentPixel, rcWorkArea.Top);
szFormSize = new Size(m_szFormSize.Width, rcWorkArea.Height);
break;
case Enu_FormDockStyle.Top:
ptLocation = new Point(m_ptFormLocation.X, rcWorkArea.Top - m_szFormSize.Height +SystemInformation.FrameBorderSize.Width + iTorrentPixel);
szFormSize = m_szFormSize;
break;
case Enu_FormDockStyle.Right:
ptLocation = new Point(rcWorkArea.Width - rcWorkArea.Left - SystemInformation.FrameBorderSize.Width - iTorrentPixel, rcWorkArea.Top);
szFormSize = new Size(m_szFormSize.Width, rcWorkArea.Height);
break;
case Enu_FormDockStyle.Bottom:
ptLocation = new Point(m_ptFormLocation.X, rcScreenArea.Bottom - rcScreenArea.Top - SystemInformation.FrameBorderSize.Width - iTorrentPixel);
szFormSize = m_szFormSize;
break;
default:
ptLocation = m_ptFormLocation;
szFormSize = m_szFormSize;
break;
}
}
else
{
ptLocation = m_ptFormLocation;
szFormSize = m_szFormSize;
}
}
}
}

下面在贴上在此过程中引用的一些API函数：

User32.cs文件：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
namespace DockWindow
{
class User32
{
[StructLayout(LayoutKind.Sequential)]
public struct POINT
{
public int X;
public int Y;
}
[StructLayout(LayoutKind.Sequential)]
public struct RECT
{
public int left;
public int top;
public int right;
public int bottom;
}
public enum Enu_SystemParametersInfo_Action
{
SPI_GETWORKAREA = 0x0030
}
[DllImport("User32.dll")]
public static extern bool GetCursorPos(ref POINT lpPoint);
[DllImport("User32.dll")]
public static extern bool SystemParametersInfo(uint uiAction, uint uiParam, ref RECT lpRect, uint fWinIni);
[DllImport("User32.dll")]
public static extern bool GetWindowRect(IntPtr hwnd, ref RECT lpRect);
}
}

详细可以下载工程后自行研究