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

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        [DllImport("user32.dll")]
        static extern bool ReleaseCapture();
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, UInt32 wParam, UInt32 lParam);

        private readonly UInt32 WM_SYSCOMMAND = 0x112;
        private readonly UInt32 SC_MOVE = 0xF010;
        private readonly UInt32 HTCAPTION = 2;

        private void Form1_Load(object sender, EventArgs e)
        {
            this.MouseDown += MyMouseMove;
            foreach (Control c in this.Controls)
            {
                c.MouseDown += MyMouseMove;
            }
        }

        private void MyMouseMove(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                ReleaseCapture();
                SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
            }
        }
    }
}

------解决方案--------------------
没必要所有控件都可以拖动窗体吧

------解决方案--------------------
探讨


额，这个方法只针对FORM上的控件是有用的，但是如果我PANEL上再放一个PANEL，PANEL上再加PANEL呢？不会用递归把所有的控件都绑定吧。。。