Compile-time issues

Problem 1

error CS0260: Missing partial modifier on declaration of type 'ActualSizePropertyProxy'; another partial declaration of this type exists

All classes inheriting from UIElement must have the partial modifier. This is because of the NativeCtorGenerator This is present to avoid random crashes caused by iOS/Android internal behavior

Problem 2

warning NU1701: Package 'CommonServiceLocator 1.3.0' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETStandard,Version=v2.0'. This package may not be fully compatible with your project.

Problem 3

While try to add Uno.System.Reactive to a Uno Class Library

Restoring packages for D:\Repos\SuperJMN\Uno.SuppaDesigner\Uno.Zafiro\Uno.Zafiro.csproj... NU1605: Detected package downgrade: System.Diagnostics.Debug from 4.3.0 to 4.0.11. Reference the package directly from the project to select a different version. Uno.Zafiro -> Uno.System.Reactive 4.0.0-uno.415 -> System.Dynamic.Runtime 4.0.11 -> System.Collections 4.0.11 -> runtime.aot.System.Collections 4.3.0 -> System.Diagnostics.Debug (>= 4.3.0) ...

This seems to be due to incompatibilities between Uno.Microsoft.Xaml.Behaviors.Interactivity and Uno.System.Reactive as of 25/05/2019 (latest pre-release versions)

Problem 4

The RichEditBox is almost unsupported

Problem 5

LostFocus isn't defined

Problem 6

Although the type is correctly defined, this makes the build fail:

<Style TargetType="ctr:HeaderedContentControl" >
        <Setter Property="BorderThickness" Value="1" />
        <!--<Setter Property="BorderBrush" Value="{ThemeResource AccentButtonBackground}" />
        <Setter Property="Background" Value="{ThemeResource AccentButtonBackground}" />-->
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ctr:HeaderedContentControl">
                    <Border
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}">
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto" />
                                <RowDefinition />
                            </Grid.RowDefinitions>
                            <Border Background="{TemplateBinding Background}">
                                <TextBlock Text="{TemplateBinding Header}" TextAlignment="Center" FontWeight="Bold" TextWrapping="Wrap" Foreground="{ThemeResource AppBarBorderThemeBrush}"/>
                            </Border>
                            <ContentPresenter Grid.Row="1" />
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

With this error

D:\Repos\SuperJMN\Uno.SuppaDesigner\Uno.Zafiro\Themes\Generic.xaml(54,12): XamlCompiler error WMC0110: Unknown target type 'ctr:HeaderedContentControl'

SuperJMN/The Uno Platform Migration Experience.md