通过在控件上单击拖动来移动窗口

Question

我有一个 WinForms 项目。我的窗口顶部有一个面板。我希望该面板能够在用户单击它然后拖动时移动窗口。

我该怎么做？

Answer 1

将以下声明添加到您的课程中：

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);

将其放入您的面板的MouseDown 事件中：

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