选项卡控件上下文菜单

不要费心在TabControl上设置ContextMenuStrip属性。宁可这样做。连接到TabControl的MouseClick事件,然后手动显示上下文菜单。只有单击顶部的选项卡本身,而不是实际页面时,才会触发此操作。如果单击页面,则TabControl不会收到Click事件,TabPage会收到。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);
    }


}

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;
}

有点晚了,但我已经为你问题的第一部分找到了解决办法。您可以通过向应用程序发送鼠标左键单击来确定右键单击了哪个选项卡。这将选择选项卡,因此现在可以使用TabControl.SelectedTab属性获取用户右键单击的选项卡。

    [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
    private static extern void mouse_event(long dwFlags, long dx, long dy, long cButtons, long dwExtraInfo);

    private const int MOUSEEVENTF_LEFTDOWN = 0x02;
    private const int MOUSEEVENTF_LEFTUP = 0x04;
    private const int MOUSEEVENTF_RIGHTDOWN = 0x08;
    private const int MOUSEEVENTF_RIGHTUP = 0x10;

    private static void SendLeftMouseClick()
    {
        int x = Cursor.Position.X;
        int y = Cursor.Position.Y;
        mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, x, y, 0, 0);
    }

    public Form1()
    {
        InitializeComponent();

        tabControl1.MouseDown += new MouseEventHandler(tabControl1_MouseDown);
        tabControl1.MouseUp += new MouseEventHandler(tabControl1_MouseUp);
    }

    void tabControl1_MouseDown(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Right)
        {
            // Send a left mouse click to select the tab that the user clicked on.
            SendLeftMouseClick();
        }
    }

    void tabControl1_MouseUp(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Right)
        {
            // To show a context menu for only the tab button but not the content of the tab,
            // we must show it in the tab control's mouse up event.
            contextMenuStrip1.Show((Control)sender, e.Location);
        }
    }

我在为同样的问题寻找解决办法。
在测试了@nisar和@bfree两个答案之后,我得出了这个结论(我还将tabcontrol'放在表单中某个面板中):

• 创建TabControl1
• 订阅mouseclick事件
• 创建ContextMenuTabs、ContextMenuStrip

private void tabControl1_MouseClick(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        Point ee = new Point(e.Location.X - panel1.Left, e.Location.Y - panel1.Top);
        for (int i = 0; i < this.tabControl1.TabCount; i++)
        {
            Rectangle r = this.tabControl1GetTabRect(i);
            if (r.Contains(ee))
            {
                if (this.tabControl1.SelectedIndex == i)
                    this.contextMenuTabs.Show(this.tabControl1, e.Location);
                else 
                    {
                      //if a non seelcted page was clicked we detected it here!!
                    }

                break;
            }
        }
    }
}