怎么让控件总是捕获鼠标

[LixingTie]

默认的情况下，当鼠标进入控件的可见范围时，该控件就会捕获鼠标焦点，导致其它控件不能处理鼠标事件
我想问，怎么让控件总是捕获鼠标

[kssys]

1)系统钩子(强烈推荐)
2)遍历所有控件的Mouse事件，加委托

[copico]

钩子.

不论鼠标在哪都可以捕获

[hnhl]

利用消息循环来处理：
private const int WM_MOUSEMOVE = 0x0200;
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_MOUSEMOVE)
{
button1.Location = System.Windows.Forms.Cursor.Position;
}
base.WndProc(ref m);
}
http://www.cnblogs.com/huangliang

[gyf19]

全局钩子

[tanta]

晕,那么复杂~~
其实,只要用capture就可以了.

[LixingTie]

可以贴点代码吗？

[tanta]

控件.capture=true
然后,在mousemove,mouseup,mousedown事件中就可以检测鼠标了,即使鼠标在本控件范围外.
自己看看帮助把.

[LixingTie]

都不行。当鼠标移动到其它控件上时原来的控件的鼠标处理就被抢了。

[LixingTie]

下面是我收集到的一个鼠标钩子，但因为本人水平还菜，不会用，各位帮我看看这个钩子怎么用，怎么用这个钩子获得鼠标移动的事件？当鼠标移出程序窗口范围时这个钩子还能获得鼠标信息吗？谢谢

using System;
using System.Runtime.InteropServices;
using System.Reflection;
using System.Threading;
using System.Windows.Forms;

namespace HookGlobal
{

/// <summary>
/// 这个类可以让你得到一个在运行中程序的所有鼠标事件
/// 并且引发一个带MouseEventArgs参数的.NET鼠标事件以便你很容易使用这些信息
/// </summary>
/// <remarks>
/// </remarks>
public class MouseHook
{
private const int WM_MOUSEMOVE = 0x200;
private const int WM_LBUTTONDOWN = 0x201;
private const int WM_RBUTTONDOWN = 0x204;
private const int WM_MBUTTONDOWN = 0x207;
private const int WM_LBUTTONUP = 0x202;
private const int WM_RBUTTONUP = 0x205;
private const int WM_MBUTTONUP = 0x208;
private const int WM_LBUTTONDBLCLK = 0x203;
private const int WM_RBUTTONDBLCLK = 0x206;
private const int WM_MBUTTONDBLCLK = 0x209;

//全局的事件
public event MouseEventHandler OnMouseActivity;

static int hMouseHook = 0; //鼠标钩子句柄

//鼠标常量
public const int WH_MOUSE_LL = 14; //mouse hook constant

HookProc MouseHookProcedure; //声明鼠标钩子事件类型.

//声明一个Point的封送类型
[StructLayout(LayoutKind.Sequential)]
public class POINT
{
public int x;
public int y;
}

//声明鼠标钩子的封送结构类型
[StructLayout(LayoutKind.Sequential)]
public class MouseHookStruct
{
public POINT pt;
public int hWnd;
public int wHitTestCode;
public int dwExtraInfo;
}

//装置钩子的函数
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);

//卸下钩子的函数
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern bool UnhookWindowsHookEx(int idHook);

//下一个钩挂的函数
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);

public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);

/// <summary>
/// 墨认的构造函数构造当前类的实例.
/// </summary>
public MouseHook()
{
//Start();
}

//析构函数.
~MouseHook()
{
Stop();
}

public void Start()
{
//安装鼠标钩子
if (hMouseHook == 0)
{
//生成一个HookProc的实例.
MouseHookProcedure = new HookProc(MouseHookProc);

hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, MouseHookProcedure, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]), 0);

//如果装置失败停止钩子
if (hMouseHook == 0)
{
Stop();
throw new Exception("SetWindowsHookEx failed.");
}
}
}

public void Stop()
{
bool retMouse = true;
if (hMouseHook != 0)
{
retMouse = UnhookWindowsHookEx(hMouseHook);
hMouseHook = 0;
}

//如果卸下钩子失败
if (!(retMouse)) throw new Exception("UnhookWindowsHookEx failed.");
}

private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
//如果正常运行并且用户要监听鼠标的消息
if ((nCode >= 0) && (OnMouseActivity != null))
{
MouseButtons button = MouseButtons.None;
int clickCount = 0;

switch (wParam)
{
case WM_LBUTTONDOWN:
button = MouseButtons.Left;
clickCount = 1;
break;
case WM_LBUTTONUP:
button = MouseButtons.Left;
clickCount = 1;
break;
case WM_LBUTTONDBLCLK:
button = MouseButtons.Left;
clickCount = 2;
break;
case WM_RBUTTONDOWN:
button = MouseButtons.Right;
clickCount = 1;
break;
case WM_RBUTTONUP:
button = MouseButtons.Right;
clickCount = 1;
break;
case WM_RBUTTONDBLCLK:
button = MouseButtons.Right;
clickCount = 2;
break;
}

//从回调函数中得到鼠标的信息
MouseHookStruct MyMouseHookStruct = (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));
MouseEventArgs e = new MouseEventArgs(button, clickCount, MyMouseHookStruct.pt.x, MyMouseHookStruct.pt.y, 0);
OnMouseActivity(this, e);
}
return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
}
}
}

[mobin4211]

鬼才看咧，这么多

[Yellow198267]

都说完了，没得说了~~顶~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[MaybeHelios]

我也遇到了同样的问题，capture不太合适，当我第一次将form的capture设置为true时，使用mousemove ,mousedown,mouseup可以拖动窗体到任何位置，但是当我放开鼠标时，就不能再次拖动了。当鼠标移过去后，又被form上的控件捕获了。
看到大家的回答，这是不是一定要用钩子呢。
但是我很菜，不会用。
大家再指点指点吧。
谢谢。

[MaybeHelios]

我想到一个办法啊，好像可以阿。抛弃上面的思路。
当你的鼠标进入form的区域后，使上面的控件enabled为false就得了。当然，我的不是实时刷新的。如果需要刷新的话，设置一个标志bool canMove,当当你的鼠标进入form的区域后，像mouseenter,mousemove 中canMove设置为true。在控件的mouseenter,mousemove 中判断canMove
，设置合理的capture = false。