unable to disable Contxtmenu if we use <WindowChrome.WindowChrome>

1 posts, 0 answers
  1. Nagaraj
    Nagaraj avatar
    1 posts
    Member since:
    Mar 2017

    Posted 14 Mar Link to this post

    I am unable to disable if I use WindowChrome.WindowChrome style. Please let me know your input to resolve this problem. Without WindowChrome, I am able to disable context menu with the same piece of code.
    <Window x:Class="ConextMenu_Sample.MainWindow"

            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
            Title="MainWindow" Height="350" Width="525" WindowStyle="None">
        <WindowChrome.WindowChrome>
            <WindowChrome CaptionHeight="35"
                          CornerRadius="0"
                          ResizeBorderThickness="5"
                          UseAeroCaptionButtons="False" 
             />
        </WindowChrome.WindowChrome>
        <Window.Resources>

        </Window.Resources>
        <Grid>

        </Grid>
    </Window>

    public partial class MainWindow : Window
        {
            private const uint WP_SYSTEMMENU = 0x02;
            private const uint WM_SYSTEMMENU = 0xa4;
            public MainWindow()
            {
                InitializeComponent();
                Loaded += OnLoaded;
            }

            private void OnLoaded(object sender, RoutedEventArgs e)
            {
                IntPtr windIntPtr = new WindowInteropHelper(this).Handle;
                HwndSource hwndSource = HwndSource.FromHwnd(windIntPtr);
                hwndSource.AddHook(new HwndSourceHook(WndProc));
            }

            private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wparam, IntPtr lparam, ref bool handled)
            {
                if ((msg == WM_SYSTEMMENU) && (wparam.ToInt32() == WP_SYSTEMMENU))
                {
                    handled = true;
                }
                return IntPtr.Zero;
            }        
        }              
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