Update GroupBoxBaseStyle.xaml

src/Shared/HandyControl_Shared/Themes/Styles/Base/GroupBoxBaseStyle.xaml

@@ -4,6 +4,7 @@
 
     <ResourceDictionary.MergedDictionaries>
         <ResourceDictionary Source="../../Basic/Sizes.xaml"/>
+        <ResourceDictionary Source="../../Basic/Converters.xaml"/>
     </ResourceDictionary.MergedDictionaries>
 
     <ControlTemplate x:Key="GroupBoxBaseTopTemplate" TargetType="GroupBox">
@@ -67,7 +68,10 @@
                 <RowDefinition Height="Auto"/>
                 <RowDefinition/>
             </Grid.RowDefinitions>
-            <ContentPresenter TextElement.Foreground="{TemplateBinding Foreground}" Margin="8,0,8,4" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" ContentSource="Header" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+            <StackPanel Orientation="Horizontal" Margin="8,6">
+                <ContentPresenter TextElement.Foreground="{TemplateBinding Foreground}" Margin="1,0,0,0" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" ContentSource="Header" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                <ContentPresenter TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(controls:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(controls:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
+            </StackPanel>
             <Border Grid.Row="1" CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}">
                 <ContentPresenter Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
             </Border>
@@ -80,7 +84,10 @@
                 <ColumnDefinition Width="{Binding Path=(controls:InfoElement.TitleWidth),RelativeSource={RelativeSource TemplatedParent}}"/>
                 <ColumnDefinition/>
             </Grid.ColumnDefinitions>
-            <ContentPresenter Margin="0,7,6,8" TextElement.Foreground="{TemplateBinding Foreground}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" ContentSource="Header" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+            <StackPanel Orientation="Horizontal" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="0,8,6,8">
+                <ContentPresenter TextElement.Foreground="{TemplateBinding Foreground}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" ContentSource="Header" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                <ContentPresenter TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(controls:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(controls:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
+            </StackPanel>
             <Border Grid.Column="1" CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}">
                 <ContentPresenter Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
             </Border>