Question

Im trying to make a small screenshot program, im making a small WPF window with a border. This should function as a “Viewport” so everything inside the window (within the border) should be screenshottet. How ever when i set the transparency of the window to 0 then i cant see my border. Any ideas on how to make my grid fully transparent, and still preserve a 2 px black border around it?

Answer 1

Not sure if you want the window or just the grid transparent with border.

That draws a border around the window:

<Window x:Class="MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525" 
        AllowsTransparency="True" 
        WindowStyle="None" 
        Background="Transparent" 
        BorderThickness="2" 
        BorderBrush="Black">
    <Grid>

    </Grid>
</Window>

This is drawing a broder around the grid only:

<Window x:Class="MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525" AllowsTransparency="True" WindowStyle="None" Background="Transparent">
    <Border BorderThickness="2" BorderBrush="Black">
        <Grid>

        </Grid>
    </Border>
</Window>