How do I make the Window's Title align in “Center” not in “Left”

Thank you.
But I got an error message
Error     1     '{dxt:FloatingContainerThemeKey ResourceKey=FloatingContainerCaptionTemplate}' value is not a valid MarkupExtension expression. Cannot resolve 'FloatingContainerThemeKey' in namespace 'http://schemas.devexpress.com/winfx/2008/xaml/core/themekeys'. 'FloatingContainerThemeKey' must be a subclass of MarkupExtension. Line 12 Position 23.     C:\Users\Stephen\Documents\Visual Studio 2010\Projects\DXWindowTest\DXWindowTest\WWindow.xaml     12     23     DXWindowTest
my dx version is 10.7 , Are you sure that this theme will work in my version?

Hello Stephen,
Thank you for the clarification. I have created a sample for you. Please review it, and let me know if you need further assistance.
Thank you, Marina

It worked.
Thank you.

If I have a lot of windows need set the title in center, how do I manage these pages follow our style.
We need a page or theme mange these windows in one file, it make us can easily change the title's font and foreground to the same.

I update to v10.2.3.
Is the <dx:DXWindow.Resources> tag content the same as v10.1.17.
If not, what should I change?
Thank you.

Hello Stephen,
Thank you for your feedback. In version v10.2.3, we are having problems with creating a custom theme that will be applied to all windows/controls. We plan to fix it in the v10.2.4 version. The results of our efforts will be reflected in the sample ID E1134 (How to apply a custom theme to grid elements). This sample is for DXGrid, but the approach will be the same for all components. I suggest that you track that sample status. You will be notified when we provide an updated sample for the v10.2.3 version. If after we release the sample, you will not be able to resolve this issue, please reactivate this thread. I will create a sample for you.
Thank you, Marina

Hi Marina,

Thank you for your reply,

I find that these codes can't work under V10.2.3, do you change the <TextBlock x:Name="PART_Text" 'a name or other else?

Thank you.

<dx:DXWindow.Resources>
        <DataTemplate x:Key="{dxt:FloatingContainerThemeKey ResourceKey=FloatingContainerCaptionTemplate}">
            <StackPanel Width="Auto" Height="Auto" HorizontalAlignment="Center" Orientation="Horizontal">
                <Image x:Name="PART_Icon" Width="Auto" Height="Auto" Margin="6,3,0,3" Stretch="None"
                        Source="{Binding Path=(dxcore:FloatingContainer.FloatingContainer).Icon, RelativeSource={RelativeSource AncestorType=ContentPresenter}}" />
                <TextBlock x:Name="PART_Text" Background="{x:Null}" Foreground="#FFD4E4F8" TextWrapping="Wrap" Margin="6,3,6,3" VerticalAlignment="Center" IsHitTestVisible="False"
                        Text="{Binding Path=(dxcore:FloatingContainer.FloatingContainer).Caption, RelativeSource={RelativeSource AncestorType=ContentPresenter}}" />
            </StackPanel>
            <DataTemplate.Triggers>
                <Trigger Property="Source" SourceName="PART_Icon" Value="{x:Null}">
                    <Setter TargetName="PART_Icon" Property="Visibility" Value="Collapsed" />
                </Trigger>
            </DataTemplate.Triggers>

</DataTemplate>

</dx:DXWindow.Resources>

Hello Stephen,
Thank you for your feedback! I upgraded my previous sample, added the template from my first post, and the application started to work fine. See the attachment. I believe that you have accidentally missed something. Feel free to ask additional questions.
Thank you, Marina

Hi Marina,
Thank you.
But, When I set the dx:ThemeManager.ThemeName="Office2007Black" it can't be worked again.
I think that Office2007Black theme replace the <dx:DXWindow.Resources> setting.

Hello Stephen,
Thank you for the feedback. Please add the ThemeName property for the key:
<DataTemplate x:Key="{dxt:FloatingContainerThemeKey ResourceKey=FloatingContainerCaptionTemplate, ThemeName=Office2007Black}">
This will fix the issue.
Thank you, Marina

Hi,
Thank you for your help.
Do you have a plan on release v10.2.4, our project is enmergence, we need the function for manage the theme.
Thank you.