卡文的菜单

Question

在Windows形式的应用程序，我设定数字显示财产上的卡.

1. 我怎么能告诉使用者点击了一个标签，然后那个是目前选择的？
2. 我怎么可以限制的上下文的菜单显示，只有当顶片部分的标签，和其他未在标签？

Answer 1

不要打扰设定数字显示酒店的卡.而它这样做的方式。钩到卡的可事件，然后手动显示的上下文的菜单。这只会火如果卡本身顶上被点击，而不是实际的网页。如果你点击网页，然后将卡不接收击事件，TabPage。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

开口的事件的背景下菜单可用来解决这两个问题

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;
}

Answer 3

有点晚了，但是我已经找到一个解决方案的第一部分的你的问题。你可以找出哪些选项是正确的点击的通过发送鼠标左键应用程序。这种选择的选项，所以现在你可以使用卡.SelectedTab酒店获得的标签，用户权击。

    [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);
        }
    }

Answer 4

我是在寻找一个解决方案完全相同的问题。
经检测的两@nisar和@BFree回答我来到这个(我也有卡内一个面板的某个地方的形式):

• 创建tabcontrol1
• 订阅可事件
• 创建contextMenuTabs,数字显示

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;
            }
        }
    }
}