WPF (Windows Presentation Foundation) 技术能让你创建窗口和对话框。它的优势是在窗体设计时能与代码分开。
这里有个简单的显示弹出消息练习。这个消息是定义在XAML代码中它的实现类似HTML（但是请区分大小写）。你能轻松的调整字体大小，内容，颜色等等。不需要嵌入任何代码。
复制代码 代码如下:
$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()
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