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QuestionCustom Control Style Question Revisited Pin
Kevin Marois30-Oct-23 10:14
professionalKevin Marois30-Oct-23 10:14 
I've asked about this already, but I'm not really getting it. I'm asking this again with more detail in the hopes that it'll make more sense.

Lets say I develop a custom control that have a TextBlock over a TextBox[^]. I have defind colors for Normal and Mouse Over

Here's the XAML for my control. It's pretty simple:
<pre><ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:local="clr-namespace:MyTextBoxEx">

<pre>
<SolidColorBrush x:Key="CaptionNormalColor" Color="Green"/>
<SolidColorBrush x:Key="CaptionMouseOverColor" Color="Purple"/>

<SolidColorBrush x:Key="TextNormalColor" Color="Red"/>
<SolidColorBrush x:Key="TextMouseOverColor" Color="Blue"/>

<Style TargetType="{x:Type local:TextBoxEx}">

    <Setter Property="Padding" Value="1"/>

    <Setter Property="Template">

        <Setter.Value>

            <ControlTemplate TargetType="{x:Type local:TextBoxEx}">

                <StackPanel Orientation="Vertical">

                    <Border Padding="{Binding Padding, RelativeSource={RelativeSource TemplatedParent}}"
                            Margin="{Binding Margin, RelativeSource={RelativeSource TemplatedParent}}"
                            Background="{TemplateBinding Background}"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            BorderThickness="{TemplateBinding BorderThickness}">

                        <StackPanel Orientation="Vertical">

                            <TextBlock x:Name="caption"
                                       Foreground="{StaticResource CaptionNormalColor}"
                                       Text="{TemplateBinding Caption}"/>

                            <TextBox x:Name="text"
                                     Foreground="{StaticResource TextNormalColor}"
                                     Text="{TemplateBinding Text}"/>

                        </StackPanel>

                    </Border>

                </StackPanel>

                <ControlTemplate.Triggers>

                    <Trigger Property="IsMouseOver" Value="true">
                        <Setter TargetName="caption" Property="TextElement.Foreground" Value="{StaticResource CaptionMouseOverColor}"/>
                        <Setter TargetName="caption" Property="TextElement.FontWeight" Value="Bold"/>

                        <Setter TargetName="text" Property="TextElement.Foreground" Value="{StaticResource TextMouseOverColor}"/>
                        <Setter TargetName="text" Property="TextElement.FontStyle" Value="Italic"/>
                    </Trigger>

                </ControlTemplate.Triggers>

            </ControlTemplate>

        </Setter.Value>

    </Setter>

</Style>



Here's the question. I have assigned colors for normal, and for the Mouse Over triggers. Assume this control was in a compiled assembly, and I gave it to you, how would you go about overwriting the theme colors, or theming it the way you wanted?

When you buy a third party control, and want apply your theme to it, how do the controls inside get their colors set? In my case, the triggers are set to a specifically named brush. Just knowing the brush names wouldn't help you overwrite the theme colors, would it?
In theory, theory and practice are the same. But in practice, they never are.”
If it's not broken, fix it until it is.
Everything makes sense in someone's mind.

AnswerRe: Custom Control Style Question Revisited Pin
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QuestionUI Validation Problem Pin
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