防止在表单标题栏上右键单击显示系统上下文菜单

Question

How can I disable right click on title bar of the form and prevent showing system context menu:

Help me to get out of this issue

thank you

Answer 1

If you specifically want to disable showing system context menu on right click on window's title bar, you can handle WM_CONTEXTMENU :

const int WM_CONTEXTMENU = 0x007B;
protected override void WndProc(ref Message m)
{
    if (m.Msg == WM_CONTEXTMENU)
        m.Result = IntPtr.Zero;
    else
        base.WndProc(ref m);
}

If you also want to prevent the possibility of clicking on form's icon to show the context menu, then you can set ShowIcon property of the form to false :

this.ShowIcon = false;

Answer 2

Have you tried setting your Window Style property to ' None '? This should remove the Title Bar's Context Menu completely.

Answer 3

You can achieve this by setting the ControlBox property of form to false .

public Form1()
{
     InitializeComponent();
     this.ControlBox = false;
}

No more Context Menu with Restore, Maximize Minimize, Close, Move will be displayed on Right Clicking on the Title Bar.

this.ControlBox = false;

Note: Above one line ( this.ControlBox = false; ), is the key and the Form1 Constructor with InitializeComponent() method call is shown is the sample, just to show the context.