[WinUI] How can I hide MAUI Titlebar without loosing the dragging feature

[mhrastegari]

In .NET 7 I could do hiding custom MAUI titlebar like this and worked great:

Windows's App.xaml:

<maui:MauiWinUIApplication.Resources>
        <ResourceDictionary>
            <ResourceDictionary.ThemeDictionaries>
                <ResourceDictionary x:Key="Light">
                    <SolidColorBrush x:Key="WindowCaptionForeground">Gray</SolidColorBrush>
                    <SolidColorBrush x:Key="WindowCaptionBackground">Transparent</SolidColorBrush>
                    <SolidColorBrush x:Key="WindowCaptionForegroundDisabled">Gray</SolidColorBrush>
                    <SolidColorBrush x:Key="WindowCaptionBackgroundDisabled">Transparent</SolidColorBrush>
                </ResourceDictionary>
                <ResourceDictionary x:Key="Dark">
                    <SolidColorBrush x:Key="WindowCaptionForeground">Gray</SolidColorBrush>
                    <SolidColorBrush x:Key="WindowCaptionBackground">Transparent</SolidColorBrush>
                    <SolidColorBrush x:Key="WindowCaptionForegroundDisabled">Gray</SolidColorBrush>
                    <SolidColorBrush x:Key="WindowCaptionBackgroundDisabled">Transparent</SolidColorBrush>
                </ResourceDictionary>
            </ResourceDictionary.ThemeDictionaries>
            <DataTemplate x:Key="MauiAppTitleBarContainerTemplate">
                <Grid HorizontalAlignment="Stretch">
                    <ContentControl
                        x:Name="AppTitleBarContentControl"
                        Grid.Column="4"
                        HorizontalContentAlignment="Stretch"
                        VerticalContentAlignment="Stretch"
                        IsTabStop="False" />
                </Grid>
            </DataTemplate>
        </ResourceDictionary>
    </maui:MauiWinUIApplication.Resources>

Now in .NET 8 when I try that it won't work properly:

• There will be a gap with the same size as Title bar and you need to resize the window for that to disappear
• The dragging of title bar area won't work like it used to be

[mhrastegari]

I believe @PureWeen is the expert on this topic :")