通過點擊並拖動控件來移動窗口

Question

我有一個WinForms項目。我的窗戶頂部有一個面板。我希望該面板能夠移動窗口，當用戶點擊它然後拖動。

我怎樣才能做到這一點？

Answer 1

添加以下declerations到類：

public const int WM_NCLBUTTONDOWN = 0xA1; 
public const int HTCAPTION = 0x2; 

[DllImport("User32.dll")] 
public static extern bool ReleaseCapture(); 

[DllImport("User32.dll")] 
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam); 

在面板的MouseDown事件將這個：

private void panel1_MouseDown(object sender, MouseEventArgs e) 
{ 
    if (e.Button == MouseButtons.Left) 
    { 
     ReleaseCapture(); 
     SendMessage(Handle, WM_NCLBUTTONDOWN, HTCAPTION, 0); 
    } 
}