Some questions regarding focusing on WPF

Question

I have a little problem with focus on WPF. I want to create a window, always on top, and never get focus (even if we click on it).

Here is my solution:

public partial class SkinWindow : Window
{
    public SkinWindow()
    {
        InitializeComponent();
        Loaded += ( object sender, RoutedEventArgs e ) => SetNoActiveWindow();
    }

    private void SetNoActiveWindow()
    {
        WindowInteropHelper helper = new WindowInteropHelper( this );
        SetWindowLong( helper.Handle, GWL_EXSTYLE, WS_EX_NOACTIVATE );
        LockSetForegroundWindow( LSFW_LOCK );
    }

    const int GWL_EXSTYLE = -20;
    const int WS_EX_NOACTIVATE = 134217728;
    const int LSFW_LOCK = 1;

    [DllImport( "user32" )]
    public static extern bool LockSetForegroundWindow( uint UINT );

    [DllImport( "user32" )]
    public static extern IntPtr SetWindowLong( IntPtr hWnd, int nIndex, int dwNewLong );
}

The first problem: it works, but I have to choose another window to “remove” the focus of my application (after the focus is not shown again, even if I click on my window). The second problem: when I move or resize the window, changes occur when I drop the window.

Do you have any ideas / links / documents? Thank:)

Answer 1

, SO: , #. Windows Forms. Win32, , , ...