基本上我想制作简单的切换程序（将映射到某些键盘快捷键），如果处于正常模式，则将任务栏设置为自动隐藏模式（反之，如果处于自动隐藏，则设置为正常显示模式）。
你知道如何用C#实现吗？ （或 Win32 C++，但任何能真正做到这一点的都可以。）
谢谢。希望我已经说清楚了。
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我真的不想要任何与任务栏重叠的全屏应用程序，只想要切换显示模式并退出的无窗口程序。我定期从自动隐藏切换到正常视图，并希望简化它。 （使用Win7。）
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已编辑。例如
#include <windows.h>
int CALLBACK WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
{
SetWindowPos(FindWindow(L"Shell_traywnd", NULL ), 0, 0, 0, 0, 0, 0x40);
}
不会成功，它只显示任务栏，该任务栏已经可见= true，但不会将其切换到自动隐藏或从自动隐藏切换。 （同样适用于 0x80。）
以下是我使用的功能：
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr FindWindow(string strClassName, string strWindowName);
[DllImport("shell32.dll")]
public static extern UInt32 SHAppBarMessage(UInt32 dwMessage, ref APPBARDATA pData);
public enum AppBarMessages
{
New = 0x00,
Remove = 0x01,
QueryPos = 0x02,
SetPos = 0x03,
GetState = 0x04,
GetTaskBarPos = 0x05,
Activate = 0x06,
GetAutoHideBar = 0x07,
SetAutoHideBar = 0x08,
WindowPosChanged = 0x09,
SetState = 0x0a
}
[StructLayout(LayoutKind.Sequential)]
public struct APPBARDATA
{
public UInt32 cbSize;
public IntPtr hWnd;
public UInt32 uCallbackMessage;
public UInt32 uEdge;
public Rectangle rc;
public Int32 lParam;
}
public enum AppBarStates
{
AutoHide = 0x01,
AlwaysOnTop = 0x02
}
/// <summary>
/// Set the Taskbar State option
/// </summary>
/// <param name="option">AppBarState to activate</param>
public void SetTaskbarState(AppBarStates option)
{
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = (UInt32)Marshal.SizeOf(msgData);
msgData.hWnd = FindWindow("System_TrayWnd", null);
msgData.lParam = (Int32)(option);
SHAppBarMessage((UInt32)AppBarMessages.SetState, ref msgData);
}
/// <summary>
/// Gets the current Taskbar state
/// </summary>
/// <returns>current Taskbar state</returns>
public AppBarStates GetTaskbarState()
{
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = (UInt32)Marshal.SizeOf(msgData);
msgData.hWnd = FindWindow("System_TrayWnd", null);
return (AppBarStates)SHAppBarMessage((UInt32)AppBarMessages.GetState, ref msgData);
}
实现上述代码后，只需将任务栏设置为自动隐藏：
SetTaskbarState(AppBarStates.AutoHide);通过以下方式获取当前状态：
AppBarStates currentState = GetTaskbarState();
我遵循了@Quispie的答案，但它一开始在Windows 10中不起作用，但给了我解决它的基础和来源（所以值得称赞），还有http://www.pinvoke.net/。
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr FindWindow(string strClassName, string strWindowName);
[DllImport("shell32.dll")]
public static extern UInt32 SHAppBarMessage(UInt32 dwMessage, ref APPBARDATA pData);
public enum AppBarMessages
{
New = 0x00,
Remove = 0x01,
QueryPos = 0x02,
SetPos = 0x03,
GetState = 0x04,
GetTaskBarPos = 0x05,
Activate = 0x06,
GetAutoHideBar = 0x07,
SetAutoHideBar = 0x08,
WindowPosChanged = 0x09,
SetState = 0x0a
}
[StructLayout(LayoutKind.Sequential)]
public struct APPBARDATA
{
public int cbSize; // initialize this field using: Marshal.SizeOf(typeof(APPBARDATA));
public IntPtr hWnd;
public uint uCallbackMessage;
public uint uEdge;
public RECT rc;
public int lParam;
}
[StructLayout(LayoutKind.Sequential)]
public struct RECT
{
public int Left, Top, Right, Bottom;
public RECT(int left, int top, int right, int bottom)
{
Left = left;
Top = top;
Right = right;
Bottom = bottom;
}
public RECT(System.Drawing.Rectangle r) : this(r.Left, r.Top, r.Right, r.Bottom) { }
public int X
{
get { return Left; }
set { Right -= (Left - value); Left = value; }
}
public int Y
{
get { return Top; }
set { Bottom -= (Top - value); Top = value; }
}
public int Height
{
get { return Bottom - Top; }
set { Bottom = value + Top; }
}
public int Width
{
get { return Right - Left; }
set { Right = value + Left; }
}
public System.Drawing.Point Location
{
get { return new System.Drawing.Point(Left, Top); }
set { X = value.X; Y = value.Y; }
}
public System.Drawing.Size Size
{
get { return new System.Drawing.Size(Width, Height); }
set { Width = value.Width; Height = value.Height; }
}
public static implicit operator System.Drawing.Rectangle(RECT r)
{
return new System.Drawing.Rectangle(r.Left, r.Top, r.Width, r.Height);
}
public static implicit operator RECT(System.Drawing.Rectangle r)
{
return new RECT(r);
}
public static bool operator ==(RECT r1, RECT r2)
{
return r1.Equals(r2);
}
public static bool operator !=(RECT r1, RECT r2)
{
return !r1.Equals(r2);
}
public bool Equals(RECT r)
{
return r.Left == Left && r.Top == Top && r.Right == Right && r.Bottom == Bottom;
}
public override bool Equals(object obj)
{
if (obj is RECT)
return Equals((RECT)obj);
else if (obj is System.Drawing.Rectangle)
return Equals(new RECT((System.Drawing.Rectangle)obj));
return false;
}
public override int GetHashCode()
{
return ((System.Drawing.Rectangle)this).GetHashCode();
}
public override string ToString()
{
return string.Format(System.Globalization.CultureInfo.CurrentCulture, "{{Left={0},Top={1},Right={2},Bottom={3}}}", Left, Top, Right, Bottom);
}
}
public enum AppBarStates
{
AlwaysOnTop = 0x00,
AutoHide = 0x01
}
/// <summary>
/// Set the Taskbar State option
/// </summary>
/// <param name="option">AppBarState to activate</param>
public void SetTaskbarState(AppBarStates option)
{
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = Marshal.SizeOf(msgData);
msgData.hWnd = FindWindow("System_TrayWnd", null);
msgData.lParam = (int)option;
SHAppBarMessage((UInt32)AppBarMessages.SetState, ref msgData);
}
/// <summary>
/// Gets the current Taskbar state
/// </summary>
/// <returns>current Taskbar state</returns>
public AppBarStates GetTaskbarState()
{
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = Marshal.SizeOf(msgData);
msgData.hWnd = FindWindow("System_TrayWnd", null);
return (AppBarStates)SHAppBarMessage((UInt32)AppBarMessages.GetState, ref msgData);
}
与 C# 相比，这是一个更多与 WIN32 API 相关的问题。您可以使用this（当然需要翻译为dot net）来隐藏任务栏。
您可以使用 http://www.pinvoke.net 将 WIN32 API 调用转换为 dot net。
您可以通过使用此处描述的键操作注册表来实现此目的。
这应该是一个简单的任务，祝你好运。
任务栏是一个应用程序栏，您可以使用 SHAppBarMessage
控制它对于所有像我一样从 Google 来到这里并使用 Windows 10 的人来说，@Quispie 和 @nicruo 的答案都可以，但需要额外的
if原因是类名因版本而异（显然，因为我除了 10 之外不再有任何其他 Windows）。
msgData.hWnd = FindWindow("System_TrayWnd", null);
if (msgData.hWnd == IntPtr.Zero)
msgData.hWnd = FindWindow("Shell_TrayWnd", null);
VB“显示”和“自动隐藏”任务栏 - Windows 10
我已经用 VB 翻译了这个，这可能对其他人有用（Windows 10；应该在 32 位和 64 位中工作）：
Option Explicit On
Option Strict On
Imports System.Runtime.InteropServices
Module WindowsTaskbarSettings
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As IntPtr
Declare Function SHAppBarMessage Lib "shell32.dll" Alias "SHAppBarMessage" (ByVal dwMessage As Integer, ByRef pData As APPBARDATA) As Integer
'https://learn.microsoft.com/en-us/windows/win32/api/shellapi/nf-shellapi-shappbarmessage
'https://learn.microsoft.com/nl-nl/windows/win32/api/shellapi/ns-shellapi-appbardata
'https://learn.microsoft.com/en-us/windows/win32/shell/abm-getstate 'requires csize to be set
'https://learn.microsoft.com/en-us/windows/win32/shell/abm-setstate 'requires hwnd and csize to be set
Structure APPBARDATA
Dim cbSize As Integer
Dim hwnd As Long
Dim uCallbackMessage As Integer '[Delegate]
Dim uEdge As Integer
Dim rc As RECT
Dim lParam As Integer 'message specific, see
End Structure
Structure RECT
Dim Left As Integer
Dim Top As Integer
Dim Right As Integer
Dim Bottom As Integer
End Structure
Public Enum AppBarMessages
Newx = &H0
Remove = &H1
QueryPos = &H2
SetPos = &H3
GetState = &H4
GetTaskBarPos = &H5
Activate = &H6
GetAutoHideBar = &H7
SetAutoHideBar = &H8
WindowPosChanged = &H9
SetState = &HA
End Enum
Public Enum AppBarStates
AutoHide = &H1
AlwaysOnTop = &H2
End Enum
Public Sub AutoHide_Toggle()
If GetTaskbarStateAutoHide() Then
SetTaskbarState(AppBarStates.AlwaysOnTop)
Else
SetTaskbarState(AppBarStates.AutoHide)
End If
End Sub
Public Sub SetTaskbarState(StateOption As AppBarStates)
'sets the Taskbar State to StateOption (AllwaysOnTop or AutoHide)
Dim msgData As New APPBARDATA
msgData.cbSize = Marshal.SizeOf(msgData)
'not necessary to use handle of Windows Taskbar, but can be found by
'msgData.hwnd = CInt(FindWindow("Shell_TrayWnd", ""))
'Set the State which will be requested
msgData.lParam = StateOption
'Ansd send the message to set this state
SHAppBarMessage(AppBarMessages.SetState, msgData)
'Remark on my small (1280x800) screen the desktop area remains the same, but on my larger (1080x1920) screen
'the desktop icons are displaced when autohide is set on !!! Don't understand why (it then thinks the screen is only 800 high)
End Sub
Public Function GetTaskbarStateAutoHide() As Boolean
'true if AutoHide is on, false otherwise
Dim msgData As New APPBARDATA
Dim ret As Integer
msgData.cbSize = Marshal.SizeOf(msgData)
' also here not necessay to find handle to Windows Taskbar
ret = SHAppBarMessage(AppBarMessages.GetState, msgData)
GetTaskbarStateAutoHide = CBool(ret And &H1)
End Function
End Module
我从这段代码中创建了一个任务栏类，如下所示：
public class Taskbar
{
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr FindWindow(string strClassName, string strWindowName);
[DllImport("shell32.dll")]
public static extern UInt32 SHAppBarMessage(UInt32 dwMessage, ref APPBARDATA pData);
public enum AppBarMessages
{
New = 0x00,
Remove = 0x01,
QueryPos = 0x02,
SetPos = 0x03,
GetState = 0x04,
GetTaskBarPos = 0x05,
Activate = 0x06,
GetAutoHideBar = 0x07,
SetAutoHideBar = 0x08,
WindowPosChanged = 0x09,
SetState = 0x0a
}
[StructLayout(LayoutKind.Sequential)]
public struct APPBARDATA
{
public UInt32 cbSize;
public IntPtr hWnd;
public UInt32 uCallbackMessage;
public UInt32 uEdge;
public Rectangle rc;
public Int32 lParam;
}
public enum AppBarStates
{
AutoHide = 0x01,
AlwaysOnTop = 0x02
}
/// <summary>
/// Set the Taskbar State option
/// </summary>
/// <param name="option">AppBarState to activate</param>
public void SetTaskbarState(AppBarStates option)
{
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = (UInt32)Marshal.SizeOf(msgData);
msgData.hWnd = FindWindow("System_TrayWnd", null);
msgData.lParam = (Int32)(option);
SHAppBarMessage((UInt32)AppBarMessages.SetState, ref msgData);
}
/// <summary>
/// Gets the current Taskbar state
/// </summary>
/// <returns>current Taskbar state</returns>
public AppBarStates GetTaskbarState()
{
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = (UInt32)Marshal.SizeOf(msgData);
msgData.hWnd = FindWindow("System_TrayWnd", null);
return (AppBarStates)SHAppBarMessage((UInt32)AppBarMessages.GetState, ref msgData);
}
}
问题是，当我表演的时候
taskbar.SetTaskbarState(Taskbar.AppBarStates.AlwaysOnTop);
之后
taskbar.SetTaskbarState(Taskbar.AppBarStates.AutoHide);
我的开始按钮不再被激活（我无法打开开始菜单，单击它不会导致一切）。我使用的是 Windows 10。有人知道这个问题的解决方案吗？
这里是一个用 C++ 实现的切换示例。在 Windows 11 23H2 上测试。
#include <Windows.h>
#include <WinUser.h>
#include <shellapi.h>
bool getTaskbarAutohideState()
{
APPBARDATA msgData{};
msgData.cbSize = sizeof(msgData);
msgData.hWnd = FindWindow("System_TrayWnd", nullptr);
LPARAM state = SHAppBarMessage(ABM_GETSTATE, &msgData);
return state & ABS_AUTOHIDE;
}
void setTaskbarAutohide(bool enabled)
{
APPBARDATA msgData{};
msgData.cbSize = sizeof(msgData);
msgData.hWnd = FindWindow("System_TrayWnd", nullptr);
msgData.lParam = enabled ? ABS_AUTOHIDE : ABS_ALWAYSONTOP;
SHAppBarMessage(ABM_SETSTATE, &msgData);
}
void toggleTaskbarAutohide()
{
setTaskbarAutohide(!getTaskbarAutohideState());
}
int main(int argc, char const *argv[])
{
toggleTaskbarAutohide();
return 0;
}
完整的 Github 存储库用于构建二进制文件此处。