C#把子控件的MouseUP MouseDown MouseMove三个事件提交到父控件

相当于 this.KeyPreview = true;的效果只是我之添加了几个事件而已.

 

很简单使用HOOK 获取消息 计算坐标返回到指定控件上

 

使用方法

        private MousePreview m_MousePreview;

    
        private void Form1_Load(object sender, EventArgs e)
        {
          
            m_MousePreview = new MousePreview(panel1);

                     
        }

 

 

下面是全部的类

 

 

/// <summary>
/// 把鼠标 DOWN UP MOVE 三个事件提交到父窗体上
/// zgke@sina.com
/// </summary>
public class MousePreview
{

[DllImport("kernel32")]
public static extern int GetCurrentThreadId();

[DllImport("user32", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern int SetWindowsHookEx(int idHook, HOOKPROC lpfn, int hmod, int dwThreadId);

[DllImport("user32.dll", EntryPoint = "SendMessage")]
public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);

public delegate int HOOKPROC(int nCode, int wParam, int lParam);

private Control m_Control;

public MousePreview(Control p_Control)
{
SetWindowsHookEx(7, new HOOKPROC(MyMouseProc), 0, GetCurrentThreadId());
m_Control = p_Control;
}

public int MyMouseProc(int nCode, int wParam, int lParam)
{
if (nCode == 0)
{
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();

Rectangle _Rect = m_Control.RectangleToScreen(m_Control.ClientRectangle);
if (!_Rect.Contains(Cursor.Position)) return 0;

short _X = (short)(Cursor.Position.X - _Rect.X);
short _Y = (short)(Cursor.Position.Y - _Rect.Y);

int _Point = _Y << 16;
_Point += _X;

switch (wParam)
{
case 512:
SendMessage(m_Control.Handle, 512, wParam, _Point);
break;
case 513:
SendMessage(m_Control.Handle, 513, wParam, _Point);
break;
case 514:
SendMessage(m_Control.Handle, 514, wParam, _Point);
break;
case 516:
SendMessage(m_Control.Handle, 516, wParam, _Point);
break;
case 517:
SendMessage(m_Control.Handle, 517, wParam, _Point);
break;
default:
break;
}
}
return 0;
}

}