mystery of the missing controls (Win8 theme bug)

[kity]

N.B. Framework 4.5

// first in Application  App.cs set at runtime theme windows8
protected override void OnStartup(StartupEventArgs e)
{           
    StyleManager.ApplicationTheme = new Windows8Theme();                   
}

// Then create two VIEW

// First is MASTER_VIEW
// ADD XAML
  <telerik:RadTabControl Grid.Row="0" >

            <telerik:RadTabItem DropDownContent="Trend Import" Header="DETAIL" >
                <telerik:RadTabItem.Content>
                    <views:DETAIL_VIEW/>
                </telerik:RadTabItem.Content>
            </telerik:RadTabItem>

</telerik:RadTabControl>

// ADD SECOND XAML -> DETAIL_VIEW
<Grid>

   <GroupBox Header="tyy tyy" >
           <TextBlock Text="Settings"/> 
    </GroupBox>
 </Grid>
      
Build and run WPF APPLICATION

TextBlock is not visible. Cannot see content(Text) of any TextBlock controls?
I use default style at all.

Workaround:
Remove: OnStartup(StartupEventArgs e) function, stay at default theme.
You will see all textblock controls again.

Additional info: This bug depends and others controls like GroupBox and others.

Framework 4.5
VS2012

Telerik v. 2013.2.611.45 (For framework 4.5)

This is styles that I use. In comment is second workaround.

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >

    <ControlTemplate x:Key="TextBoxErrorTemplate">
        <DockPanel LastChildFill="True" >
            <Border BorderBrush="Red" BorderThickness="1" >
                <AdornedElementPlaceholder x:Name="Holder"  />
            </Border>
            <Label  Foreground="White" Content="{Binding ElementName=Holder, Path=AdornedElement.(Validation.Errors)[0].ErrorContent}" BorderThickness="1" BorderBrush="White" Background="Red" UseLayoutRounding="True"  />
        </DockPanel>
    </ControlTemplate>


    <Style TargetType="Button">
            <Style.Triggers>
                <Trigger Property="Validation.HasError" Value="true">
                    <Setter Property="IsEnabled" Value="False"/>
                </Trigger>
                <Trigger Property="Validation.HasError" Value="false">
                    <Setter Property="IsEnabled" Value="True"/>
                </Trigger>
            </Style.Triggers>
    </Style>

    <Style x:Key="LinkButton" TargetType="Button">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <TextBlock TextDecorations="Underline">
                    <ContentPresenter />
                    </TextBlock>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Setter Property="Foreground" Value="Blue" />
        <Setter Property="Cursor" Value="Hand" />
        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="true">
                <Setter Property="Foreground" Value="Red" />
            </Trigger>
        </Style.Triggers>
    </Style>

 <!--
    <Style TargetType="TextBlock">
        <Setter Property="Foreground" Value="#FF151515" />
    </Style>

    <Style TargetType="GroupBox">
        <Setter Property="Foreground" Value="#FF151515" />
    </Style>
-->

</ResourceDictionary>

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >



    <Style x:Key="LinkButtonStyle" TargetType="{x:Type Button}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Button}">
                    <TextBlock TextDecorations="Underline">
                        <ContentPresenter />
                    </TextBlock>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Setter Property="HorizontalContentAlignment" Value="Center"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="Foreground" Value="Blue" />
        <Setter Property="Cursor" Value="Hand" />
        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="true">
                <Setter Property="Foreground" Value="Red" />
            </Trigger>
        </Style.Triggers>
    </Style>

</ResourceDictionary>

[Petar Mladenov]

Hi Petar,

 We are aware of this issue and it will be fixed in the Q3 2013 Official Release. As a workaround, you can set the Foreground of the elements you don't see explicitly.

Regards,
Petar Mladenov
Telerik

[kity]

thank you

 

already did that.