TabControl上下文菜单

Question

在Windows窗体应用程序中,我在TabControl上设置ContextMenuStrip属性.

1. 如何告诉用户单击当前选中的选项卡以外的选项卡？
2. 如何限制上下文菜单仅在单击带有标签的顶部Tab部分时显示,而不是在选项卡的其他位置显示？

Answer 1

不要在TabControl上设置contextMenuStrip属性.而是这样做.连接到tabControl的MouseClick事件,然后手动显示上下文菜单.只有在单击选项卡本身时才会触发,而不是实际页面.如果单击该页面,则tabControl不会收到Click事件,TabPage会执行.一些代码:

public Form1()
{
    InitializeComponent();
    this.tabControl1.MouseClick += new MouseEventHandler(tabControl1_MouseClick);
}

private void tabControl1_MouseClick(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        this.contextMenuStrip1.Show(this.tabControl1, e.Location);
    }


}

Answer 2

上下文菜单的打开事件可用于解决这两个问题

private void contextMenuStrip1_Opening(object sender, CancelEventArgs e)
{            
    Point p = this.tabControl1.PointToClient(Cursor.Position);
    for (int i = 0; i < this.tabControl1.TabCount; i++)
    {
        Rectangle r = this.tabControl1.GetTabRect(i);
        if (r.Contains(p))
        {
            this.tabControl1.SelectedIndex = i; // i is the index of tab under cursor
            return;
        }
    }
    e.Cancel = true;
}