请注意： 这个问题收集了很多反馈，下面的一些人提出了要点或修正。因此，尽管我将代码保存在这里（并可能进行更新），但我还在
github上 创建了一个
WpfAppBar项目。随时发送请求请求。
该项目还构建到WpfAppBar nuget包中
我从问题中提供的第一个链接（http://www.preproject.com/KB/dotnet/AppBar.aspx）中获取了代码，并对其进行了修改，以完成两件事：
- 使用WPF
- 是“独立的”-如果将此单个文件放在项目中，则可以调用AppBarFunctions.SetAppBar（…），而无需对窗口进行任何进一步的修改。
这种方法不会创建基类。
使用时，只需在普通的wpf窗口中的任何位置调用此代码即可（例如单击按钮或初始化）。请注意，只有在初始化窗口之后才能调用此函数，如果尚未创建HWND（如在构造函数中），则会发生错误。
将窗口设为应用栏：
AppBarFunctions.SetAppBar( this, ABEdge.Right );
将窗口还原为普通窗口：
AppBarFunctions.SetAppBar( this, ABEdge.None );
这是文件的完整代码- 请注意， 您需要将第7行的名称空间更改为适当的名称。
using System;using System.Collections.Generic;using System.Runtime.InteropServices;using System.Windows;using System.Windows.Interop;using System.Windows.Threading;namespace AppBarApplication{ public enum ABEdge : int { Left = 0, Top, Right, Bottom, None } internal static class AppBarFunctions { [StructLayout(LayoutKind.Sequential)] private struct RECT { public int left; public int top; public int right; public int bottom; } [StructLayout(LayoutKind.Sequential)] private struct APPBARDATA { public int cbSize; public IntPtr hWnd; public int uCallbackMessage; public int uEdge; public RECT rc; public IntPtr lParam; } private enum ABMsg : int { ABM_NEW = 0, ABM_REMOVE, ABM_QUERYPOS, ABM_SETPOS, ABM_GETSTATE, ABM_GETTASKBARPOS, ABM_ACTIVATE, ABM_GETAUTOHIDEBAR, ABM_SETAUTOHIDEBAR, ABM_WINDOWPOSCHANGED, ABM_SETSTATE } private enum ABNotify : int { ABN_STATECHANGE = 0, ABN_POSCHANGED, ABN_FULLSCREENAPP, ABN_WINDOWARRANGE } [Dllimport("SHELL32", CallingConvention = CallingConvention.StdCall)] private static extern uint SHAppBarMessage(int dwMessage, ref APPBARDATA pData); [Dllimport("User32.dll", CharSet = CharSet.Auto)] private static extern int RegisterWindowMessage(string msg); private class RegisterInfo { public int CallbackId { get; set; } public bool IsRegistered { get; set; } public Window Window { get; set; } public ABEdge Edge { get; set; } public WindowStyle OriginalStyle { get; set; } public Point OriginalPosition { get; set; } public Size OriginalSize { get; set; } public ResizeMode OriginalResizeMode { get; set; } public IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) { if (msg == CallbackId) { if (wParam.ToInt32() == (int)ABNotify.ABN_POSCHANGED) { ABSetPos(Edge, Window); handled = true; } } return IntPtr.Zero; } } private static Dictionary<Window, RegisterInfo> s_RegisteredWindowInfo = new Dictionary<Window, RegisterInfo>(); private static RegisterInfo GetRegisterInfo(Window appbarWindow) { RegisterInfo reg; if( s_RegisteredWindowInfo.ContainsKey(appbarWindow)) { reg = s_RegisteredWindowInfo[appbarWindow]; } else { reg = new RegisterInfo() { CallbackId = 0, Window = appbarWindow, IsRegistered = false, Edge = ABEdge.Top, OriginalStyle = appbarWindow.WindowStyle, OriginalPosition =new Point( appbarWindow.Left, appbarWindow.Top), OriginalSize = new Size( appbarWindow.ActualWidth, appbarWindow.ActualHeight), OriginalResizeMode = appbarWindow.ResizeMode, }; s_RegisteredWindowInfo.Add(appbarWindow, reg); } return reg; } private static void RestoreWindow(Window appbarWindow) { RegisterInfo info = GetRegisterInfo(appbarWindow); appbarWindow.WindowStyle = info.OriginalStyle; appbarWindow.ResizeMode = info.OriginalResizeMode; appbarWindow.Topmost = false; Rect rect = new Rect(info.OriginalPosition.X, info.OriginalPosition.Y, info.OriginalSize.Width, info.OriginalSize.Height); appbarWindow.Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, new ResizeDelegate(DoResize), appbarWindow, rect); } public static void SetAppBar(Window appbarWindow, ABEdge edge) { RegisterInfo info = GetRegisterInfo(appbarWindow); info.Edge = edge; APPBARDATA abd = new APPBARDATA(); abd.cbSize = Marshal.SizeOf(abd); abd.hWnd = new WindowInteropHelper(appbarWindow).Handle; if( edge == ABEdge.None) { if( info.IsRegistered) { SHAppBarMessage((int)ABMsg.ABM_REMOVE, ref abd); info.IsRegistered = false; } RestoreWindow(appbarWindow); return; } if (!info.IsRegistered) { info.IsRegistered = true; info.CallbackId = RegisterWindowMessage("AppBarMessage"); abd.uCallbackMessage = info.CallbackId; uint ret = SHAppBarMessage((int)ABMsg.ABM_NEW, ref abd); HwndSource source = HwndSource.FromHwnd(abd.hWnd); source.AddHook(new HwndSourceHook(info.WndProc)); } appbarWindow.WindowStyle = WindowStyle.None; appbarWindow.ResizeMode = ResizeMode.NoResize; appbarWindow.Topmost = true; ABSetPos(info.Edge, appbarWindow); } private delegate void ResizeDelegate(Window appbarWindow, Rect rect); private static void DoResize(Window appbarWindow, Rect rect) { appbarWindow.Width = rect.Width; appbarWindow.Height = rect.Height; appbarWindow.Top = rect.Top; appbarWindow.Left = rect.Left; } private static void ABSetPos(ABEdge edge, Window appbarWindow) { APPBARDATA barData = new APPBARDATA(); barData.cbSize = Marshal.SizeOf(barData); barData.hWnd = new WindowInteropHelper(appbarWindow).Handle; barData.uEdge = (int)edge; if (barData.uEdge == (int)ABEdge.Left || barData.uEdge == (int)ABEdge.Right) { barData.rc.top = 0; barData.rc.bottom = (int)SystemParameters.PrimaryScreenHeight; if (barData.uEdge == (int)ABEdge.Left) { barData.rc.left = 0; barData.rc.right = (int)Math.Round(appbarWindow.ActualWidth); } else { barData.rc.right = (int)SystemParameters.PrimaryScreenWidth; barData.rc.left = barData.rc.right - (int)Math.Round(appbarWindow.ActualWidth); } } else { barData.rc.left = 0; barData.rc.right = (int)SystemParameters.PrimaryScreenWidth; if (barData.uEdge == (int)ABEdge.Top) { barData.rc.top = 0; barData.rc.bottom = (int)Math.Round(appbarWindow.ActualHeight); } else { barData.rc.bottom = (int)SystemParameters.PrimaryScreenHeight; barData.rc.top = barData.rc.bottom - (int)Math.Round(appbarWindow.ActualHeight); } } SHAppBarMessage((int)ABMsg.ABM_QUERYPOS, ref barData); SHAppBarMessage((int)ABMsg.ABM_SETPOS, ref barData); Rect rect = new Rect((double)barData.rc.left, (double)barData.rc.top, (double)(barData.rc.right - barData.rc.left), (double)(barData.rc.bottom - barData.rc.top)); //This is done async, because WPF will send a resize after a new appbar is added. //if we size right away, WPFs resize comes last and overrides us. appbarWindow.Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, new ResizeDelegate(DoResize), appbarWindow, rect); } }}
