App.xaml

<Application x:Class="CalendarHabitsApp.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:CalendarHabitsApp" xmlns:Converters="clr-namespace:CalendarHabitsApp.Converters">
    <Application.Resources>
        <!-- merge NotifyIcon and related stuff into the application -->
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="NotifyIcon/NotifyIconResources.xaml" />
            </ResourceDictionary.MergedDictionaries>

            <FontFamily x:Key="OldStandard">/Assets/Fonts/#Old Standard TT</FontFamily>
            
            <Converters:CaseConverter x:Key="CaseConverterToUpper" Case="Upper"/>
            <Converters:CaseConverter x:Key="CaseConverterToLower" Case="Lower"/>
        </ResourceDictionary>
    </Application.Resources>
</Application>