对于我正在做的软件项目，我需要更换桌面窗口。
要求：
我目前一直在尝试Naskohell，但这会取代整个桌面，包括任务栏。我可以编写自己的任务栏，但我觉得这是我希望避免的额外工作。
然后有SetWindowPos函数，但我不知道用哪个Z级来实现我想要的。
有人能告诉我实现我的要求的最佳方法是什么？
答案 0 :(得分：1)
您需要位于桌面之上，位于应用之下，并隐藏任务栏。 我首先尝试通过Hide TaskBar in WinForms Application
隐藏任务栏其次，使用HWND_BOTTOM将窗口设置为最低。 有一些奇怪的行为最适合跨多个操作系统的Setting a Windows form to be bottommost
进行测试 编辑 - 好吧花了一点点，因为任务栏不断出现。加载时会闪烁，然后会闪回。其中一些可以优化，但我会留给你 - 但这是一个工作演示。我已经测试了移动任务栏和多个桌面 - 所有似乎都运行正常。您还需要阻止窗口关闭（如果您想要这种行为），但需要挂钩到WM_CLOSE。并且忽略它（仍然不会阻止某人使用任务管理器，在这种情况下，你需要像观察者进程这样的过程，并且两个进程都会相互监视以检测对方何时关闭）。我已经从几个SO帖子和一些麻烦中编译了这个。窗口属性 在任务栏中显示= false WindowState =最大化 ControlBox = false FormBorderStyle = none
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace DesktopReplacement
{
public partial class Form1 : Form
{
private bool _enableOverride;
internal class NativeMethods
{
public const int WM_WINDOWPOSCHANGING = 0x46;
public const int WM_WINDOWPOSCHANGED = 0x47;
public const int GWL_HWNDPARENT = -8;
public const int SW_SHOW = 1;
[Flags()]
public enum SetWindowPosFlags
{
SWP_NOSIZE = 0x1,
SWP_NOMOVE = 0x2,
SWP_NOZORDER = 0x4,
SWP_NOREDRAW = 0x8,
SWP_NOACTIVATE = 0x10,
SWP_FRAMECHANGED = 0x20,
SWP_DRAWFRAME = SWP_FRAMECHANGED,
SWP_SHOWWINDOW = 0x40,
SWP_HIDEWINDOW = 0x80,
SWP_NOCOPYBITS = 0x100,
SWP_NOOWNERZORDER = 0x200,
SWP_NOREPOSITION = SWP_NOOWNERZORDER,
SWP_NOSENDCHANGING = 0x400,
SWP_DEFERERASE = 0x2000,
SWP_ASYNCWINDOWPOS = 0x4000,
}
public enum WindowZOrder
{
HWND_TOP = 0,
HWND_BOTTOM = 1,
HWND_TOPMOST = -1,
HWND_NOTOPMOST = -2,
}
[StructLayout(LayoutKind.Sequential)]
public struct WINDOWPOS
{
public IntPtr hWnd;
public IntPtr hwndInsertAfter;
public int x;
public int y;
public int cx;
public int cy;
public SetWindowPosFlags flags;
// Returns the WINDOWPOS structure pointed to by the lParam parameter
// of a WM_WINDOWPOSCHANGING or WM_WINDOWPOSCHANGED message.
public static WINDOWPOS FromMessage(Message msg)
{
// Marshal the lParam parameter to an WINDOWPOS structure,
// and return the new structure
return (WINDOWPOS)Marshal.PtrToStructure(msg.LParam, typeof(WINDOWPOS));
}
// Replaces the original WINDOWPOS structure pointed to by the lParam
// parameter of a WM_WINDOWPOSCHANGING or WM_WINDOWPSCHANGING message
// with this one, so that the native window will be able to see any
// changes that we have made to its values.
public void UpdateMessage(Message msg)
{
// Marshal this updated structure back to lParam so the native
// window can respond to our changes.
// The old structure that it points to should be deleted, too.
Marshal.StructureToPtr(this, msg.LParam, true);
}
}
}
public static class HWND
{
public static readonly IntPtr
NOTOPMOST = new IntPtr(-2),
BROADCAST = new IntPtr(0xffff),
TOPMOST = new IntPtr(-1),
TOP = new IntPtr(0),
BOTTOM = new IntPtr(1);
}
public static class SWP
{
public static readonly int
NOSIZE = 0x0001,
NOMOVE = 0x0002,
NOZORDER = 0x0004,
NOREDRAW = 0x0008,
NOACTIVATE = 0x0010,
DRAWFRAME = 0x0020,
FRAMECHANGED = 0x0020,
SHOWWINDOW = 0x0040,
HIDEWINDOW = 0x0080,
NOCOPYBITS = 0x0100,
NOOWNERZORDER = 0x0200,
NOREPOSITION = 0x0200,
NOSENDCHANGING = 0x0400,
DEFERERASE = 0x2000,
ASYNCWINDOWPOS = 0x4000;
}
[DllImport("user32.dll", SetLastError = true)]
static extern int SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindow(string lpWindowClass, string lpWindowName);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle);
[DllImport("user32.dll")]
public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, int uFlags);
[DllImport("user32.dll")]
private static extern int ShowWindow(IntPtr hwnd, int command);
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
IntPtr hprog = FindWindowEx(
FindWindowEx(
FindWindow("Progman", "Program Manager"),
IntPtr.Zero, "SHELLDLL_DefView", ""
),
IntPtr.Zero, "SysListView32", "FolderView"
);
SetWindowLong(this.Handle, NativeMethods.GWL_HWNDPARENT, hprog);
}
protected override void WndProc(ref Message m)
{
if (_enableOverride)
{
if (m.Msg == NativeMethods.WM_WINDOWPOSCHANGING)
{
// Extract the WINDOWPOS structure corresponding to this message
NativeMethods.WINDOWPOS wndPos = NativeMethods.WINDOWPOS.FromMessage(m);
wndPos.flags = wndPos.flags | NativeMethods.SetWindowPosFlags.SWP_NOZORDER;
wndPos.UpdateMessage(m);
}
}
base.WndProc(ref m);
}
private void timer1_Tick(object sender, EventArgs e)
{
SetWindowPos(Handle, HWND.BOTTOM, 0, 0, 0, 0, SWP.SHOWWINDOW | SWP.NOMOVE | SWP.NOOWNERZORDER | SWP.NOSIZE | SWP.NOACTIVATE);
IntPtr task = FindWindow("Shell_TrayWnd", "");
ShowWindow(task, NativeMethods.SW_SHOW);
_enableOverride = true;
}
}
}
由于您使用的是WPF，请尝试一下。它需要一些清理/格式化，但你明白了这一点：）
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Interop;
using System.Windows.Threading;
namespace WpfApplication1
{
///
/// Interaction logic for MainWindow.xaml
///
public partial class MainWindow : Window
{
public MainWindow()
{
this.SourceInitialized += MainWindow_SourceInitialized;
this.WindowStyle = WindowStyle.None;
this.Loaded += Window_Loaded;
this.WindowState = WindowState.Maximized;
InitializeComponent();
DispatcherTimer dispatcherTimer = new DispatcherTimer();
dispatcherTimer.Tick += dispatcherTimer_Tick;
dispatcherTimer.Interval = new TimeSpan(0, 0, 0, 0, 500);
dispatcherTimer.Start();
}
private bool _enableOverride;
internal class NativeMethods
{
public const int WM_WINDOWPOSCHANGING = 0x46;
public const int WM_WINDOWPOSCHANGED = 0x47;
public const int GWL_HWNDPARENT = -8;
public const int SW_SHOW = 1;
[Flags]
public enum SetWindowPosFlags
{
SWP_NOSIZE = 0x1,
SWP_NOMOVE = 0x2,
SWP_NOZORDER = 0x4,
SWP_NOREDRAW = 0x8,
SWP_NOACTIVATE = 0x10,
SWP_FRAMECHANGED = 0x20,
SWP_DRAWFRAME = SWP_FRAMECHANGED,
SWP_SHOWWINDOW = 0x40,
SWP_HIDEWINDOW = 0x80,
SWP_NOCOPYBITS = 0x100,
SWP_NOOWNERZORDER = 0x200,
SWP_NOREPOSITION = SWP_NOOWNERZORDER,
SWP_NOSENDCHANGING = 0x400,
SWP_DEFERERASE = 0x2000,
SWP_ASYNCWINDOWPOS = 0x4000
}
public enum WindowZOrder
{
HWND_TOP = 0,
HWND_BOTTOM = 1,
HWND_TOPMOST = -1,
HWND_NOTOPMOST = -2
}
[StructLayout(LayoutKind.Sequential)]
public struct WINDOWPOS
{
public IntPtr hWnd;
public IntPtr hwndInsertAfter;
public int x;
public int y;
public int cx;
public int cy;
public SetWindowPosFlags flags;
// Returns the WINDOWPOS structure pointed to by the lParam parameter
// of a WM_WINDOWPOSCHANGING or WM_WINDOWPOSCHANGED message.
public static WINDOWPOS FromMessage(IntPtr lParam)
{
// Marshal the lParam parameter to an WINDOWPOS structure,
// and return the new structure
return (WINDOWPOS)Marshal.PtrToStructure(lParam, typeof(WINDOWPOS));
}
// Replaces the original WINDOWPOS structure pointed to by the lParam
// parameter of a WM_WINDOWPOSCHANGING or WM_WINDOWPSCHANGING message
// with this one, so that the native window will be able to see any
// changes that we have made to its values.
public void UpdateMessage(IntPtr lParam)
{
// Marshal this updated structure back to lParam so the native
// window can respond to our changes.
// The old structure that it points to should be deleted, too.
Marshal.StructureToPtr(this, lParam, true);
}
}
}
public static class HWND
{
public static readonly IntPtr
NOTOPMOST = new IntPtr(-2),
BROADCAST = new IntPtr(0xffff),
TOPMOST = new IntPtr(-1),
TOP = new IntPtr(0),
BOTTOM = new IntPtr(1);
}
public static class SWP
{
public static readonly int
NOSIZE = 0x0001,
NOMOVE = 0x0002,
NOZORDER = 0x0004,
NOREDRAW = 0x0008,
NOACTIVATE = 0x0010,
DRAWFRAME = 0x0020,
FRAMECHANGED = 0x0020,
SHOWWINDOW = 0x0040,
HIDEWINDOW = 0x0080,
NOCOPYBITS = 0x0100,
NOOWNERZORDER = 0x0200,
NOREPOSITION = 0x0200,
NOSENDCHANGING = 0x0400,
DEFERERASE = 0x2000,
ASYNCWINDOWPOS = 0x4000;
}
[DllImport("user32.dll", SetLastError = true)]
static extern int SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindow(string lpWindowClass, string lpWindowName);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle);
[DllImport("user32.dll")]
public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, int uFlags);
[DllImport("user32.dll")]
private static extern int ShowWindow(IntPtr hwnd, int command);
private void dispatcherTimer_Tick(object sender, EventArgs e)
{
//ensure we don't overlap the taskbar.
SetWindowPos(new WindowInteropHelper(this).Handle, HWND.BOTTOM, 0, 0, 0, 0, SWP.SHOWWINDOW | SWP.NOMOVE | SWP.NOOWNERZORDER | SWP.NOSIZE | SWP.NOACTIVATE);
IntPtr task = FindWindow("Shell_TrayWnd", "");
ShowWindow(task, NativeMethods.SW_SHOW);
_enableOverride = true;
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (_enableOverride)
{
if (msg == NativeMethods.WM_WINDOWPOSCHANGING)
{
Debug.WriteLine("WM_WINDOWPOSCHANGING");
// Extract the WINDOWPOS structure corresponding to this message
//lParam has the ptr to a WindowsPos structure if its our WM_WINDOWPOSCHANGING struct
NativeMethods.WINDOWPOS wndPos = NativeMethods.WINDOWPOS.FromMessage(lParam);
wndPos.flags = wndPos.flags | NativeMethods.SetWindowPosFlags.SWP_NOZORDER;
wndPos.UpdateMessage(lParam);
//handled = true;
}
}
return IntPtr.Zero;
}
private void MainWindow_SourceInitialized(object sender, EventArgs e)
{
HwndSource source = PresentationSource.FromVisual(this) as HwndSource;
source.AddHook(WndProc);
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
IntPtr hWnd = new WindowInteropHelper(this).Handle;
IntPtr hprog = FindWindowEx(
FindWindowEx(
FindWindow("Progman", "Program Manager"),
IntPtr.Zero, "SHELLDLL_DefView", ""
),
IntPtr.Zero, "SysListView32", "FolderView"
);
SetWindowLong(hWnd, NativeMethods.GWL_HWNDPARENT, hprog);
}
}
}