Envelopes with a window

[Rieni De Rijke]

Our users use - when sending letters - envelopes with a window where you can read name and address.
To help them to write the name and address on the right place I can show a rectangle in the background of the RadTextBox.
The question is: what is the best way to skrew this feature/style on and off?
Or... do you know a better way to show/hide such a rectangle?

<telerik:RadRichTextBox x:Name="editor" AllowDrop="True" Drop="EditorDrop" ShowComments="False" FontFamily="Calibri" FontSize="11">
            <telerik:RadDocument LayoutMode="Paged" />
            <telerik:RadRichTextBox.Resources>
                <Style TargetType="telerik:Page">
                    <Setter Property="Template">
                        <Setter.Value>
                            <ControlTemplate TargetType="telerik:Page">
                                <Grid Background="White">
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition Width="50"></ColumnDefinition>
                                        <ColumnDefinition Width="370"></ColumnDefinition>
                                        <ColumnDefinition Width="*"></ColumnDefinition>
                                    </Grid.ColumnDefinitions>
                                    <Grid.RowDefinitions>
                                        <RowDefinition Height="120"></RowDefinition>
                                        <RowDefinition Height="120"></RowDefinition>
                                        <RowDefinition Height="*"></RowDefinition>
                                    </Grid.RowDefinitions>
                                    <Canvas x:Name="PageContentPresenter" Background="White" />
                                    <Border Grid.Column="1" Grid.Row="1" BorderBrush="Blue" BorderThickness="1" CornerRadius="5" Background="Aqua">
                                    </Border>
                                </Grid>
                            </ControlTemplate>
                        </Setter.Value>
                    </Setter>
                    <Setter Property="HorizontalAlignment" Value="Center" />
                    <Setter Property="VerticalAlignment" Value="Top" />
                </Style>
            </telerik:RadRichTextBox.Resources>
        </telerik:RadRichTextBox>

[Boby]

Hello Rieni,
If I understand your scenario correctly, you can use custom layer which can be dynamically added/removed from the UI, as demonstrated in this demo (the code should be the same for WPF implementation).

Don't hesitate to contact us if you have further questions.

All the best,
Boby
the Telerik team

[Rieni De Rijke]

Yes, that's it. Thank you for your time!  8-)