C#窗体贴边自动隐藏组件

发布时间:2010年06月01日      浏览次数:342 次
靠边隐藏效果:当程序移动到显示的边界时,程序自动隐藏起来,留一条小边在外面,很酷的效果吧.
先介绍下实现原理,靠边隐藏无非就是判断窗体的位置和屏幕的四边的关系,当上左右三个方向超出的时候,就把窗体自动往上移,问题是...怎么判断窗体的位置呢?.Net里面有很方便的事件:LocationChanged,来判断窗体位置的变化,那又如何判断鼠标和窗体的关系呢?最简单的办法是用个 timer不停的去判断...,我最不想用这种方法实现,结果苦苦探寻了两个小时最终还是以这种最笨的方法来实现效果-_-#,如果不用timer,还有其他什么方法呢?我第一想到的是钩子,于是我拦截系统消息WM_MOVE,WM_MOVING,0x00a0................发现都无法满足要求,翻遍winnt.h也没发现有什么是进入窗体离开窗体时发出的消息,只有一个0x00a0是经过窗体边框时发的消息,不过呢如果鼠标移动太快,系统就收不到这个消息.... 此路不通,于是想看看.Net里面封装了什么事件, 很遗憾MouveEnter和MouseLeave会被上层的控件遮蔽,我总不能窗体上有多少控件都给设置Mouse事件吧.............,最后还是用timer来实现比较现实-_-#
我把它封装成一个.Net组件,这样以后的项目如果需要这种效果只需像引用Timer一样拖拽到窗体上,然后设置DockForm为需要效果的窗体就可以了
具体代码如下:
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
namespace QQClient.QQ.QQBuddy.Components
{
[Description("窗体自动靠边隐藏组件 @Author: Red_angelX")]
public partial class AutoDockManage : Component
{
private Form _form;
public AutoDockManage()
{
InitializeComponent();
}
public AutoDockManage(IContainer container)
{
container.Add(this);
InitializeComponent();
}
[Description("用于控制要自动Dock的窗体")]
public Form DockForm
{
get
{
return _form;
}
set
{
_form = value;
if (_form != null)
{
_form.LocationChanged += new EventHandler(_form_LocationChanged);
_form.SizeChanged += new EventHandler(_form_SizeChanged);
_form.TopMost = true;
}
}
}
private bool IsOrg = false;
private Rectangle lastBoard;
private const int DOCKING = 0;
private const int PRE_DOCKING = 1;
private const int OFF = 2;
private int status = 2;
private void CheckPosTimer_Tick(object sender, EventArgs e)
{
if (DesignMode)
{
return;
}
if (_form == null || IsOrg == false )
{
return;
}
if (_form.Bounds.Contains(Cursor.Position))
{
/*
* 该死的.Net在移动时候不会发生该代码,必须在鼠标离开后才会执行
if (dockSide == AnchorStyles.None && status == OFF && IsOrg == true)
{
if (_form.Bounds.Width == lastBoard.Width && _form.Bounds.Height == lastBoard.Height)
{
return;
}
_form.Size = new Size(lastBoard.Width, lastBoard.Height);
return;
}
*/
switch (dockSide)
{
case AnchorStyles.Top:
if (status == DOCKING)
_form.Location = new Point(_form.Location.X, 0);
break;
case AnchorStyles.Right:
if (status == DOCKING)
_form.Location = new Point(Screen.PrimaryScreen.Bounds.Width - _form.Width, 1);
break;
case AnchorStyles.Left:
if (status == DOCKING)
_form.Location = new Point(0, 1);
break;
}
}
else
{
switch (dockSide)
{
case AnchorStyles.Top:
_form.Location = new Point(_form.Location.X, (_form.Height - 4) * (-1));
break;
case AnchorStyles.Right:
_form.Size = new Size(_form.Width, Screen.PrimaryScreen.WorkingArea.Height);
_form.Location = new Point(Screen.PrimaryScreen.Bounds.Width - 4, 1);
break;
case AnchorStyles.Left:
_form.Size = new Size(_form.Width, Screen.PrimaryScreen.WorkingArea.Height);
_form.Location = new Point((-1) * (_form.Width - 4), 1);
break;
case AnchorStyles.None:
if (IsOrg == true && status == OFF)
{
if (_form.Bounds.Width != lastBoard.Width || _form.Bounds.Height != lastBoard.Height)
{
_form.Size = new Size(lastBoard.Width, lastBoard.Height);
}
}
break;
}
}
}
internal AnchorStyles dockSide = AnchorStyles.None;
private void GetDockSide()
{
if (_form.Top <= 0)
{
dockSide = AnchorStyles.Top;
if (_form.Bounds.Contains(Cursor.Position))
status = PRE_DOCKING;
else
status = DOCKING;
}
else if (_form.Left <= 0)
{
dockSide = AnchorStyles.Left;
if (_form.Bounds.Contains(Cursor.Position))
status = PRE_DOCKING;
else
status = DOCKING;
}
else if (_form.Left >= Screen.PrimaryScreen.Bounds.Width - _form.Width)
{
dockSide = AnchorStyles.Right;
if (_form.Bounds.Contains(Cursor.Position))
status = PRE_DOCKING;
else
status = DOCKING;
}
else
{
dockSide = AnchorStyles.None;
status = OFF;
}
}
private void _form_LocationChanged(object sender, EventArgs e)
{
GetDockSide();
if (IsOrg == false)
{
lastBoard = _form.Bounds;
IsOrg = true;
}
}
private void _form_SizeChanged(object sender, EventArgs e)
{
if (IsOrg == true && status == OFF)
{
lastBoard = _form.Bounds;
}
}
}
}
编译用csc去编译,vs2005里没找到组件工程-_-#,如果不会编译的直接下载我编译好的dll

现在已知还有个小问题,
.Net机制中的窗体大小改变事件必须在鼠标离开窗体后才能执行,所以想要完美的隐藏效果,最好是自己画个标题栏
不过总体来说还算令我满意,VS 2005 编译没问题,2003似乎命名空间不能和类名相同?可能需要改少许代码
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