PowerShell 技能连载 - 显示 WPF 消息提示

WPF (Windows Presentation Foundation) 是一种创建窗体和对话框的技术。WPF 的好处是窗体设计和程序代码可以分离。

以下是一个显示醒目消息的例子。消息内容定义在 XAML 代码中，看起来类似 HTML （不过是区分大小写的）。您可以很容易地调整字体大小、文字、颜色等。不需要改任何程序代码：

$xaml = @"
<Window
 xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>

 <Border BorderThickness="20" BorderBrush="Yellow" CornerRadius="9" Background='Red'>
  <StackPanel>
   <Label FontSize="50" FontFamily='Stencil' Background='Red' Foreground='White' BorderThickness='0'>
    System will be rebooted in 15 minutes!
   </Label>

   <Label HorizontalAlignment="Center" FontSize="15" FontFamily='Consolas' Background='Red' Foreground='White' BorderThickness='0'>
    Worried about losing data? Talk to your friendly help desk representative and freely share your concerns!
   </Label>
  </StackPanel>
 </Border>
</Window>
"@

$reader = [System.XML.XMLReader]::Create([System.IO.StringReader] $xaml)
$window = [System.Windows.Markup.XAMLReader]::Load($reader)
$Window.AllowsTransparency = $True
$window.SizeToContent = 'WidthAndHeight'
$window.ResizeMode = 'NoResize'
$Window.Opacity = .7
$window.Topmost = $true
$window.WindowStartupLocation = 'CenterScreen'
$window.WindowStyle = 'None'
# show message for 5 seconds:
$null = $window.Show()
Start-Sleep -Seconds 5
$window.Close()