cemu-DS4Windows/DS4Windows/App.xaml

<Application x:Class="DS4WinWPF.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:DS4WinWPF"
             Startup="Application_Startup" Exit="Application_Exit" ShutdownMode="OnExplicitShutdown" SessionEnding="Application_SessionEnding">
    <Application.Resources>
        <Style TargetType="{x:Type Button}" x:Key="NoBGHoverBtn">
            <Setter Property="Background" Value="Transparent" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border Name="border" BorderThickness="0" Background="{TemplateBinding Background}">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" />
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Application.Resources>
</Application>