OneSharpCheckbox.xaml

<Window x:Class="ExampleWPFApp.OneSharpCheckbox"
        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:ExampleWPFApp"
        mc:Ignorable="d"
        xmlns:pns="clr-namespace:PrettyNSharp;assembly=PrettyNSharp"
        Title="SharpCheckbox Example" Height="300" Width="300">
    <Border Background="White">
        <Grid >
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <!--<pns:SharpCheckbox Grid.Column="1" Height="80" BorderThickness="4" />-->
            <pns:SharpCheckbox Grid.Column="1" BorderThickness="4" Height="80" CornerRadius="40" MarkMargin="4" 
                               IsThreeState="False" Checkmark="{StaticResource Plus}" Nullmark="{StaticResource Disk}"
                               />
            <!--<pns:SharpCheckbox Grid.Column="1" BorderThickness="0" Background="Transparent" Checkmark="{StaticResource Star}" Height="80" MarkMargin="4"/>-->
        </Grid>
    </Border>
</Window>