c# - 热获取光标相对于控件左上角的位置？

Question

当我点击一个控件时，

如何获取相对于 (winforms) 控件左上角的光标位置？

C#、VS 2005

附言:我在询问需要该坐标的工具提示“显示”方法的上下文..

Answer 1

这是我在复合控件上设置工具提示的代码，可能会给您一些线索(来自 UserControl 的 LED 派生器):

    public LED()
    {
        InitializeComponent();
        m_Image = global::AdvAdmittance.Controls.Properties.Resources.ledgray_small;
        m_ToolTip = new ToolTip();
        m_ToolTip.AutoPopDelay = 5000;
        m_ToolTip.InitialDelay = 1000;
        m_ToolTip.ReshowDelay = 500;
        m_ToolTip.ShowAlways = true;
        m_LedPictureBox.MouseHover += new EventHandler(m_LedPictureBox_MouseHover);
        m_LedPictureBox.MouseLeave += new EventHandler(m_LedPictureBox_MouseLeave);
        m_LedPictureBox.Click += new EventHandler(m_LedPictureBox_Click);
    }

    void m_LedPictureBox_MouseHover(object sender, EventArgs e)
    {
        if (m_ToolTipText != string.Empty)
        {
            Point toolTipPoint = this.Parent.PointToClient(Cursor.Position);
            toolTipPoint.Y -= 20;
            m_ToolTip.Show(m_ToolTipText, this.Parent, toolTipPoint);
        }
    }

    void m_LedPictureBox_MouseLeave(object sender, EventArgs e)
    {
        m_ToolTip.Hide(this.m_LedPictureBox);
    }