无标题窗口的拖放怎么实现?

Question

无标题窗口的拖放怎么实现?

Answer 1

http://community.csdn.net/Expert/topic/3839/3839309.xml?temp=.307171

Answer 2

private const int WM_NCLBUTTONDOWN = 0xA1;
private const int HTCAPTION = 2;
[DllImport("user32.dll", EntryPoint="SendMessageA")]
private static extern int SendMessage (int hwnd, int wMsg, int wParam, int lParam);
[DllImport("user32.dll")]
private static extern int ReleaseCapture ();
private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
//为当前的应用程序释放鼠标捕获
ReleaseCapture();
//发送消息，让系统误以为你在标题拦上按下鼠标
        SendMessage((int)this.Handle,WM_NCLBUTTONDOWN,HTCAPTION,0);
}

Answer 3

lucbesson(女娃哈哈) 正解。

Answer 4

private Point mouse_offset;
private void frmMain_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
mouse_offset = new Point(-e.X, -e.Y);
} private void frmMain_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
Point mousePos = Control.MousePosition;
mousePos.Offset(mouse_offset.X, mouse_offset.Y);
Location = mousePos; 
}
}