replace v6 with experimental v7 code

src/MpvNet.Windows/WPF/Controls/StringSettingControl.xaml

@@ -0,0 +1,68 @@
+<UserControl
+    x:Name="StringSettingControl1"
+    x:Class="MpvNet.Windows.WPF.StringSettingControl"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+    xmlns:local="clr-namespace:MpvNet.Windows.WPF"
+    mc:Ignorable="d" 
+    d:DesignHeight="450"
+    d:DesignWidth="800">
+    
+    <Grid Margin="20,0">
+        <StackPanel>
+            <TextBox
+                x:Name="TitleTextBox"
+                FontSize="24"
+                Margin="0,10"
+                BorderThickness="0"
+                IsReadOnly="True"
+                Foreground="{Binding Theme.Heading}"
+                Background="{Binding Theme.Background}"
+                />
+            
+            <Grid Margin="0,0,0,10">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto" />
+                    <ColumnDefinition Width="Auto" />
+                </Grid.ColumnDefinitions>
+                <TextBox
+                    x:Name="ValueTextBox"
+                    Text="{Binding Path=Text, ElementName=StringSettingControl1, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                    Width="150"
+                    FontSize="13"
+                    Padding="2"
+                    HorizontalAlignment="Left"
+                    Foreground="{Binding Theme.Foreground}"
+                    Background="{Binding Theme.Background}"
+                    CaretBrush="{Binding Theme.Foreground}"
+                    TextChanged="ValueTextBox_TextChanged"
+                    />
+
+                <Button
+                    x:Name="Button"
+                    Width="25"
+                    Height="25"
+                    Grid.Column="1"
+                    Margin="5,0,0,0"
+                    Click="Button_Click"
+                    >...
+                </Button>
+            </Grid>
+
+            <TextBox
+                x:Name="HelpTextBox"
+                TextWrapping="WrapWithOverflow"
+                BorderThickness="0"
+                IsReadOnly="True"
+                Foreground="{Binding Theme.Foreground}"
+                Background="{Binding Theme.Background}"
+                />
+
+            <TextBlock x:Name="LinkTextBlock" Margin="0,10">
+                <local:HyperlinkEx x:Name="Link"></local:HyperlinkEx>
+            </TextBlock>
+        </StackPanel>
+    </Grid>
+</UserControl>