Question

I created an application using Microsoft ribbon for WPF. I used RibbonWindow instead of simple Window to place QuickAccessToolbar to window header.

The problem is that normal Window becomes fullscreen when i set

  WindowStyle="None"
  WindowState="Maximized"

But RibbonWindow becomes bigger and its bottom part hides behind taskbar.

I suppose that the only difference between window and RibbonWindows is the controlTemplate.
But i dont actually understand how can i via template place the window above the taskbar.

Any ideas how to show my RibbonWindow above taskbar just as normal window does?

Link to the VS2010 project (10KiB) (Microsoft Ribbon For WPF isn’t included)

Answer 1

RibbonWindow uses custom WindowChrome. That is the reason of incorrect behavior. Try this code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using Microsoft.Windows.Shell;

namespace Utils
{
    public static class WindowHelper
    {
        public static void Fullscreen(Window p_oWindow)
        {
            p_oWindow.WindowStyle = WindowStyle.None;
            p_oWindow.Topmost = true;
            p_oWindow.WindowState = WindowState.Maximized;
            WindowChrome.SetWindowChrome(p_oWindow, null);
        }

        public static void UndoFullscreen(Window p_oWindow)
        {
            p_oWindow.WindowStyle = WindowStyle.SingleBorderWindow;
            p_oWindow.Topmost = false;
            p_oWindow.WindowState = WindowState.Normal;
            WindowChrome.SetWindowChrome(p_oWindow, GetChrome());
        }

        public static WindowChrome GetChrome()
        {
            WindowChrome oCustomChrome = new WindowChrome();
            oCustomChrome.CornerRadius = new System.Windows.CornerRadius(0, 0, 0, 0);
            oCustomChrome.CaptionHeight = 0;
            oCustomChrome.ResizeBorderThickness = new System.Windows.Thickness(2, 2, 2, 2);
            return oCustomChrome;
        }
    }
}