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我想从 Powershell 执行 WinAPI 命令，例如按下 WPF 表单上的按钮，开始按钮隐藏并显示在 powershell 5 中创建此代码

Add-Type -AssemblyName PresentationFramework

[xml]$xaml = @"
<Window 
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"   
        xmlns:local="clr-namespace:WinAPI"
        Height="367" Width="264" Title="Hide Start button" WindowStartupLocation="CenterScreen" ResizeMode="NoResize">
    <Grid>
        <Button x:Name = "StartButton" Content="Start button" Margin="10,60,11,0" Height="25" VerticalAlignment="Top" RenderTransformOrigin="0.5,0.5" Grid.ColumnSpan="2">
        </Button>
    </Grid>
</Window>
"@

$reader = (New-Object System.Xml.XmlNodeReader $xaml)
$window = [Windows.Markup.XamlReader]::Load($reader)
$button = $Window.FindName("StartButton")

#--------------------------------------------------------------------------------

Add-Type @"
  using System;
  using System.Runtime.InteropServices;
  public class Win32 {
    [DllImport("user32.dll")]
    public static extern IntPtr FindWindow(string ClassName, string WindowName);
    [DllImport("user32.dll")]
    public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string className, string windowName);
    [DllImport("user32.dll")]
    public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
  }
"@

$TaskbarHWnd = New-Object System.IntPtr
$StartButtonHWnd = New-Object System.IntPtr
[bool]$show = $true

$button.Add_Click({  
            $show = !($show)  
            $TaskbarHWnd = [Win32]::FindWindow("Shell_TrayWnd", $null); # get taskbar handle
            write-host $TaskbarHWnd
            $StartButtonHWnd = [Win32]::FindWindowEx($TaskbarHWnd, [IntPtr]::Zero, "Start", $null); # get start button handle - doesn't work
            write-host $StartButtonHWnd
            # hide Start button
            $result = if ($show) {0} Else {5}
            #if ($show) {$result = 0} Else {$result = 5}
            write-host $result
            [Win32]::ShowWindow($StartButtonHWnd, $result);            
})

$window.ShowDialog() | Out-Null

下面的命令不起作用。

$StartButtonHWnd = [Win32]::FindWindowEx($TaskbarHWnd, [IntPtr]::Zero, "Start", $null);

$StartButtonHWnd 值 = 0。为什么 FindWindowEx 不返回句柄？第二个问题。该$show = !($show)命令也不起作用我做错了什么？谢谢

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