是否有方法在PowerShell中显示与Windows系统和MacOS兼容的弹出消息框？

我知道您可以在PowerShell版本5（如下所示）上执行类似的操作，但是有没有办法重现一个在Windows和Mac OS平台上都能工作的弹出消息框

$ButtonType = [System.Windows.Forms.MessageBoxButtons]::OK

$MessageIcon = [System.Windows.Forms.MessageBoxIcon]::Information

$MessageBody = "Message Body goes here"

$MessageTitle = "Title"

$Result = [System.Windows.Forms.MessageBox]::Show($MessageBody,$MessageTitle,$ButtonType,$MessageIcon)

以上代码的输出

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下面定义的

显示消息框

功能在Windows和macOS上提供了消息框功能，以WinForms

消息框

类为模型

示例：

# Message box with custom message, OK button only, and default title and icon
$null = Show-MessageBox 'some message'

# Message box with custom message and title, buttons OK and cancel, and 
# the Stop icon (critical error)
# Return value is the name of the button chosen.
$buttonChosen = Show-MessageBox 'some message' 'a title' -Buttons OKCancel -Icon Stop

语法（为便于阅读，跨多行排列）：

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此时，唯一真正跨平台的消息显示是使用控制台。在web浏览器中显示？请允许我向新来者提供标准建议：如果答案解决了您的问题，请单击大复选标记接受它(✓) 在它旁边，也可以选择向上投票（向上投票需要至少15个信誉点）。如果您发现其他答案有帮助，请向上投票。接受（为此您将获得2个信誉点）和向上投票有助于未来的读者。有关更多信息，请参阅。如果您的问题尚未完全回答，请提供反馈或。PowerShell core中是否内置了$IsLinux和$IsMacOS自动变量？@rshelat:是的，（以及

$IsWindows

）-请注意，我刚刚进行了一次更新，以确保该代码也在Windows PowerShell中工作（

Set-StrictMode-Version 1

->

Set-StrictMode-Off

），其中未定义这些变量。

Show-MessageBox [-Message] <string> [[-Title] <string>] 
                [[-Buttons] {OK | OKCancel | AbortRetryIgnore | YesNoCancel | YesNo | RetryCancel}] 
                [-Icon {Information | Warning | Stop}] 
                [-DefaultButtonIndex {0 | 1 | 2}]

function Show-MessageBox {
  [CmdletBinding(PositionalBinding=$false)]
  param(
    [Parameter(Mandatory, Position=0)]
    [string] $Message,
    [Parameter(Position=1)]
    [string] $Title,
    [Parameter(Position=2)]
    [ValidateSet('OK', 'OKCancel', 'AbortRetryIgnore', 'YesNoCancel', 'YesNo', 'RetryCancel')]
    [string] $Buttons = 'OK',
    [ValidateSet('Information', 'Warning', 'Stop')]
    [string] $Icon = 'Information',
    [ValidateSet(0, 1, 2)]
    [int] $DefaultButtonIndex
  )

  # So that the $IsLinux and $IsMacOS PS Core-only
  # variables can safely be accessed in WinPS.
  Set-StrictMode -Off

  $buttonMap = @{ 
    'OK'               = @{ buttonList = 'OK'; defaultButtonIndex = 0 }
    'OKCancel'         = @{ buttonList = 'OK', 'Cancel'; defaultButtonIndex = 0; cancelButtonIndex = 1 }
    'AbortRetryIgnore' = @{ buttonList = 'Abort', 'Retry', 'Ignore'; defaultButtonIndex = 2; ; cancelButtonIndex = 0 }; 
    'YesNoCancel'      = @{ buttonList = 'Yes', 'No', 'Cancel'; defaultButtonIndex = 2; cancelButtonIndex = 2 };
    'YesNo'            = @{ buttonList = 'Yes', 'No'; defaultButtonIndex = 0; cancelButtonIndex = 1 }
    'RetryCancel'      = @{ buttonList = 'Retry', 'Cancel'; defaultButtonIndex = 0; cancelButtonIndex = 1 }
  }

  $numButtons = $buttonMap[$Buttons].buttonList.Count
  $defaultIndex = [math]::Min($numButtons - 1, ($buttonMap[$Buttons].defaultButtonIndex, $DefaultButtonIndex)[$PSBoundParameters.ContainsKey('DefaultButtonIndex')])
  $cancelIndex = $buttonMap[$Buttons].cancelButtonIndex

  if ($IsLinux) { 
    Throw "Not supported on Linux." 
  }
  elseif ($IsMacOS) {

    $iconClause = if ($Icon -ne 'Information') { 'as ' + $Icon -replace 'Stop', 'critical' }
    $buttonClause = "buttons { $($buttonMap[$Buttons].buttonList -replace '^', '"' -replace '$', '"' -join ',') }"

    $defaultButtonClause = 'default button ' + (1 + $defaultIndex)
    if ($null -ne $cancelIndex -and $cancelIndex -ne $defaultIndex) {
      $cancelButtonClause = 'cancel button ' + (1 + $cancelIndex)
    }

    $appleScript = "display alert `"$Title`" message `"$Message`" $iconClause $buttonClause $defaultButtonClause $cancelButtonClause"            #"

    Write-Verbose "AppleScript command: $appleScript"

    # Show the dialog.
    # Note that if a cancel button is assigned, pressing Esc results in an
    # error message indicating that the user canceled.
    $result = $appleScript | osascript 2>$null

    # Output the name of the button chosen (string):
    # The name of the cancel button, if the dialog was canceled with ESC, or the
    # name of the clicked button, which is reported as "button:<name>"
    if (-not $result) { $buttonMap[$Buttons].buttonList[$buttonMap[$Buttons].cancelButtonIndex] } else { $result -replace '.+:' }
  }
  else { # Windows
    Add-Type -Assembly System.Windows.Forms        
    # Show the dialog.
    # Output the chosen button as a stringified [System.Windows.Forms.DialogResult] enum value,
    # for consistency with the macOS behavior.
    [System.Windows.Forms.MessageBox]::Show($Message, $Title, $Buttons, $Icon, $defaultIndex * 256).ToString()
  }

}