以编程方式更改Windows 11 TouchPad切换

Question

虽然我搜索了这个站点和互联网，但我找不到任何方法来以编程方式为Windows11启用或禁用TouchPad。但是，在设置中，通过此页面可以轻松地实现这一点：

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有人能告诉我如何以编程的方式实现这个目标吗?最好是通过C#.Net。

PS:，我需要立即影响到这一点。我的意思是没有重新启动或注销/登录。

Answer 1

在对注册表进行更改之前先备份它

此注册表项是要更改的项(您可以使用c#更改该注册表项)。

Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\PrecisionTouchPad\Status

您需要将Enabled REG_DWORD设置为0

const string userRoot = "HKEY_CURRENT_USER";
const string subkey = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\PrecisionTouchPad\\Status";
const string keyName = userRoot + "\\" + subkey;
// ON
Registry.SetValue(keyName, "Enabled", 1, RegistryValueKind.DWord);
// OFF
Registry.SetValue(keyName, "Enabled", 0, RegistryValueKind.DWord);

然后，您需要广播一条消息来告诉Windows设置已更改。

这是c# (未经测试的对不起)。这些标志的文档可以在这里找到：https://learn.microsoft.com/en-us/dotnet/api/microsoft.crm.unifiedservicedesk.dynamics.controls.nativemethods.sendmessagetimeoutflags?view=dynamics-usd-3

[Flags]
public enum SendMessageTimeoutFlags : uint
{
    SMTO_NORMAL = 0x0,
    SMTO_BLOCK = 0x1,
    SMTO_ABORTIFHUNG = 0x2,
    SMTO_NOTIMEOUTIFNOTHUNG = 0x8
}

[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
public static extern IntPtr SendMessageTimeout(IntPtr hWnd,uint Msg,UIntPtr wParam,IntPtr lParam,
SendMessageTimeoutFlags fuFlags,uint uTimeout,out UIntPtr lpdwResult);

IntPtr HWND_BROADCAST = new IntPtr(0xffff);
const uint WM_SETTINGCHANGE  = 0x1A;
const int MSG_TIMEOUT = 15000;
UIntPtr RESULT;
string ENVIRONMENT = "Environment";

SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, UIntPtr.Zero, (IntPtr)Marshal.StringToHGlobalAnsi(ENVIRONMENT), SendMessageTimeoutFlags.SMTO_ABORTIFHUNG, MSG_TIMEOUT, out RESULT);

这是powershell脚本

if (-not ("win32.nativemethods" -as [type])) {
    add-type -Namespace Win32 -Name NativeMethods -MemberDefinition @"
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
public static extern IntPtr SendMessageTimeout(
    IntPtr hWnd, uint Msg, UIntPtr wParam, string lParam,
    uint fuFlags, uint uTimeout, out UIntPtr lpdwResult);
"@
}

$HWND_BROADCAST = [intptr]0xffff;
$WM_SETTINGCHANGE = 0x1a;
$result = [uintptr]::zero

[win32.nativemethods]::SendMessageTimeout($HWND_BROADCAST, $WM_SETTINGCHANGE,[uintptr]::Zero, "Environment", 2, 5000, [ref]$result);