fix maximum size with task bar size

StyledWindow.WPF/Extensions/Taskbar.cs

@@ -0,0 +1,204 @@
+/******************************************************************************
+ * Name:        Taskbar.cs
+ * Description: Class to get the taskbar's position, size and other properties.
+ * Author:      Franz Alex Gaisie-Essilfie
+ *              based on code from https://winsharp93.wordpress.com/2009/06/29/find-out-size-and-position-of-the-taskbar/
+ *
+ * Change Log:
+ *  Date        | Description
+ * -------------|--------------------------------------------------------------
+ *  2017-05-16  | Initial design
+ */
+
+using System;
+using System.Drawing;
+using System.Runtime.InteropServices;
+
+namespace System.Windows.Forms
+{
+    internal enum TaskbarPosition
+    {
+        Unknown = -1,
+        Left,
+        Top,
+        Right,
+        Bottom,
+    }
+
+    internal static class Taskbar
+    {
+        private enum ABS
+        {
+            AutoHide = 0x01,
+            AlwaysOnTop = 0x02,
+        }
+
+        ////private enum ABE : uint
+        private enum AppBarEdge : uint
+        {
+            Left = 0,
+            Top = 1,
+            Right = 2,
+            Bottom = 3
+        }
+
+        ////private enum ABM : uint
+        private enum AppBarMessage : uint
+        {
+            New = 0x00000000,
+            Remove = 0x00000001,
+            QueryPos = 0x00000002,
+            SetPos = 0x00000003,
+            GetState = 0x00000004,
+            GetTaskbarPos = 0x00000005,
+            Activate = 0x00000006,
+            GetAutoHideBar = 0x00000007,
+            SetAutoHideBar = 0x00000008,
+            WindowPosChanged = 0x00000009,
+            SetState = 0x0000000A,
+        }
+
+        private const string ClassName = "Shell_TrayWnd";
+        private static APPBARDATA _appBarData;
+
+        /// <summary>Static initializer of the <see cref="Taskbar" /> class.</summary>
+        static Taskbar()
+        {
+            _appBarData = new APPBARDATA
+            {
+                cbSize = (uint)Marshal.SizeOf(typeof(APPBARDATA)),
+                hWnd = FindWindow(Taskbar.ClassName, null)
+            };
+        }
+
+        /// <summary>
+        ///   Gets a value indicating whether the taskbar is always on top of other windows.
+        /// </summary>
+        /// <value><c>true</c> if the taskbar is always on top of other windows; otherwise, <c>false</c>.</value>
+        /// <remarks>This property always returns <c>false</c> on Windows 7 and newer.</remarks>
+        public static bool AlwaysOnTop
+        {
+            get
+            {
+                int state = SHAppBarMessage(AppBarMessage.GetState, ref _appBarData).ToInt32();
+                return ((ABS)state).HasFlag(ABS.AlwaysOnTop);
+            }
+        }
+
+        /// <summary>
+        ///   Gets a value indicating whether the taskbar is automatically hidden when inactive.
+        /// </summary>
+        /// <value><c>true</c> if the taskbar is set to auto-hide is enabled; otherwise, <c>false</c>.</value>
+        public static bool AutoHide
+        {
+            get
+            {
+                int state = SHAppBarMessage(AppBarMessage.GetState, ref _appBarData).ToInt32();
+                return ((ABS)state).HasFlag(ABS.AutoHide);
+            }
+        }
+
+        /// <summary>Gets the current display bounds of the taskbar.</summary>
+        public static Rectangle CurrentBounds
+        {
+            get
+            {
+                var rect = new RECT();
+                if (GetWindowRect(Handle, ref rect))
+                    return Rectangle.FromLTRB(rect.Left, rect.Top, rect.Right, rect.Bottom);
+
+                return Rectangle.Empty;
+            }
+        }
+
+        /// <summary>Gets the display bounds when the taskbar is fully visible.</summary>
+        public static Rectangle DisplayBounds
+        {
+            get
+            {
+                if (RefreshBoundsAndPosition())
+                    return Rectangle.FromLTRB(_appBarData.rect.Left,
+                                              _appBarData.rect.Top,
+                                              _appBarData.rect.Right,
+                                              _appBarData.rect.Bottom);
+
+                return CurrentBounds;
+            }
+        }
+
+        /// <summary>Gets the taskbar's window handle.</summary>
+        public static IntPtr Handle
+        {
+            get { return _appBarData.hWnd; }
+        }
+
+        /// <summary>Gets the taskbar's position on the screen.</summary>
+        public static TaskbarPosition Position
+        {
+            get
+            {
+                if (RefreshBoundsAndPosition())
+                    return (TaskbarPosition)_appBarData.uEdge;
+
+                return TaskbarPosition.Unknown;
+            }
+        }
+
+        /// <summary>Hides the taskbar.</summary>
+        public static void Hide()
+        {
+            const int SW_HIDE = 0;
+            ShowWindow(Handle, SW_HIDE);
+        }
+
+        /// <summary>Shows the taskbar.</summary>
+        public static void Show()
+        {
+            const int SW_SHOW = 1;
+            ShowWindow(Handle, SW_SHOW);
+        }
+
+        private static bool RefreshBoundsAndPosition()
+        {
+            //! SHAppBarMessage returns IntPtr.Zero **if it fails**
+            return SHAppBarMessage(AppBarMessage.GetTaskbarPos, ref _appBarData) != IntPtr.Zero;
+        }
+
+        #region DllImports
+
+        [DllImport("user32.dll", SetLastError = true)]
+        private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
+
+        [DllImport("user32.dll")]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        private static extern bool GetWindowRect(IntPtr hWnd, ref RECT lpRect);
+
+        [DllImport("shell32.dll", SetLastError = true)]
+        private static extern IntPtr SHAppBarMessage(AppBarMessage dwMessage, [In] ref APPBARDATA pData);
+
+        [DllImport("user32.dll")]
+        private static extern int ShowWindow(IntPtr hwnd, int command);
+
+        #endregion DllImports
+
+        [StructLayout(LayoutKind.Sequential)]
+        private struct APPBARDATA
+        {
+            public uint cbSize;
+            public IntPtr hWnd;
+            public uint uCallbackMessage;
+            public AppBarEdge uEdge;
+            public RECT rect;
+            public int lParam;
+        }
+
+        [StructLayout(LayoutKind.Sequential)]
+        private struct RECT
+        {
+            public int Left;
+            public int Top;
+            public int Right;
+            public int Bottom;
+        }
+    }
+}

StyledWindow.WPF/StyledWindow.WPF.csproj

@@ -68,8 +68,4 @@
     <PackageReference Include="Microsoft.Xaml.Behaviors.Wpf" Version="1.1.37" />
     <PackageReference Include="System.Text.Json" Version="5.0.2" />
   </ItemGroup>
-
-  <ItemGroup>
-    <Folder Include="Extensions\" />
-  </ItemGroup>
 </Project>

StyledWindow.WPF/Themes/StyledWindow.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Windows;
 using System.Windows.Controls.Primitives;
+using System.Windows.Forms;
 using MaterialDesignThemes.Wpf;
 using StyledWindow.WPF.Components;
 
@@ -114,6 +115,15 @@ private void _themeBtn_OnLoaded(object Sender, RoutedEventArgs E)
 
         #endregion
 
+        public StyledWindow()
+        {
+            var Position = Taskbar.Position;
+            var AlwaysOnTop = Taskbar.AlwaysOnTop ;
+            var AutoHide = Taskbar.AutoHide;
+            var CurrentBounds = Taskbar.CurrentBounds;
+            var DisplayBounds = Taskbar.DisplayBounds;
+            var Handle = Taskbar.Handle;
+        }
 
 
 

StyledWindow.WPF/Themes/StyledWindow.xaml

@@ -173,6 +173,9 @@
 
             <Grid x:Name="PART_MainGrid" 
                   Background="{DynamicResource MaterialDesignPaper}">
+                <b:Interaction.Behaviors>
+                    <behaviors:WindowMaximizationLimitattor/>
+                </b:Interaction.Behaviors>
                 <DockPanel>
                     <!-- Заголовок окна -->
                     <Grid Name="PART_TitleBar" DockPanel.Dock="Top">
@@ -458,7 +461,6 @@
             </Trigger> 
             <Trigger Property="WindowState" Value="Maximized">
                 <Setter TargetName="PART_MaximizeButtonPath" Property="Kind" Value="WindowRestore"/>
-                <Setter TargetName="PART_MainGrid" Property="Margin" Value="7"/>
                 <Setter TargetName="PART_Border" Property="Margin" Value="7"/>
                 <Setter TargetName="PART_Border" Property="BorderThickness" Value="7"/>
                 <Setter TargetName="PART_ResizeElements" Property="Visibility" Value="Collapsed"/>