MvvmVision/MvvmScaffoldFrame48/WPFFroms/SuspensionWindow.xaml

<Window x:Class="MvvmScaffoldFrame48.WPFFroms.SuspensionWindow"
        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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:MvvmScaffoldFrame48.WPFFroms"
        mc:Ignorable="d"
        Title="SuspensionWindow" WindowStyle="None" ResizeMode="NoResize" Topmost="True"
        AllowsTransparency="True" Background="Transparent"
        SizeToContent="WidthAndHeight">
    <Grid>
        <Border Background="White" BorderBrush="Gray" BorderThickness="1" CornerRadius="5">
            <TextBlock Text="悬浮窗口内容" Padding="20" Margin="10"/>
        </Border>
    </Grid>
</Window>