面板上的鼠标移动事件 - c# winform答案

【问题标题】：Mouse move event on panel - c# winform面板上的鼠标移动事件 - c# winform
【发布时间】：2020-06-11 05:03:08
【问题描述】：

我有一个包含按钮的面板。我想在鼠标悬停时移动这个面板。我已经尝试过如下。但是当鼠标放在按钮上方时，面板不会移动。仅当鼠标在面板上时才有效。无论面板中的控件如何，我都必须让它在面板的任何点上工作。

        this.panelLeft.Controls.Add(this.button1);
        this.panelLeft.Location = new System.Drawing.Point(21, 171);
        this.panelLeft.Name = "panelLeft";
        this.panelLeft.Size = new System.Drawing.Size(662, 324);
        this.panelLeft.TabIndex = 15;
        this.panelLeft.MouseDown += new System.Windows.Forms.MouseEventHandler(this.panelLeft_MouseDown);
        this.panelLeft.MouseMove += new System.Windows.Forms.MouseEventHandler(this.panelLeft_MouseMove);

   private void panelLeft_MouseDown(object sender, MouseEventArgs e)
    {
        if (e.Button == System.Windows.Forms.MouseButtons.Left)
        {
            MouseDownLocation = e.Location;
        }
    }
    private void panelLeft_MouseMove(object sender, MouseEventArgs e)
    {
        if (e.Button == System.Windows.Forms.MouseButtons.Left)
        {
            panelLeft.Left = e.X + panelLeft.Left - MouseDownLocation.X;
            panelLeft.Top = e.Y + panelLeft.Top - MouseDownLocation.Y;
        }
    }

【问题讨论】：

标签： c# winforms panel onmousemove

【解决方案1】：

因为事件处理程序只为面板添加在按钮上添加相同的代码

Btn.MouseDown += panelLeft_MouseDown;

或者循环遍历面板内的每个控件并将事件处理程序分配给它们

【讨论】：