WPF get the default TextBox mouse over color

Question

I would like to color a control in exactly the same color like is the default TextBox's mouse over color (preferably theme-aware). e.g.

<Rectangle Fill={x:Static WhatDoIPutHere}/>

Under which key/resource can I access the color? In my current system it appears to be the #ff7eb4ea light blue, but none of the *Highlight*, *Control* or *Border* System Colors seems to be of that value.

dhilmathy · Accepted Answer · 2020-01-30T11:56:54.413

You're correct! MouseOver Border color is #FF7EB4EA; which is under TextBox.MouseOver.Border key. I don't think you'll be able to access these Resources from outside. You can get these details from default ControlTemplate for TextBox. Which is

<SolidColorBrush x:Key="TextBox.Static.Border" Color="#FFABAdB3"/>
<SolidColorBrush x:Key="TextBox.MouseOver.Border" Color="#FF7EB4EA"/>
<SolidColorBrush x:Key="TextBox.Focus.Border" Color="#FF569DE5"/>
<ControlTemplate TargetType="{x:Type TextBox}">
    <Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
        <ScrollViewer x:Name="PART_ContentHost" Focusable="false" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden"/>
    </Border>
    <ControlTemplate.Triggers>
        <Trigger Property="IsEnabled" Value="false">
            <Setter Property="Opacity" TargetName="border" Value="0.56"/>
        </Trigger>
        <Trigger Property="IsMouseOver" Value="true">
            <Setter Property="BorderBrush" TargetName="border" Value="{StaticResource TextBox.MouseOver.Border}"/>
        </Trigger>
        <Trigger Property="IsKeyboardFocused" Value="true">
            <Setter Property="BorderBrush" TargetName="border" Value="{StaticResource TextBox.Focus.Border}"/>
        </Trigger>
    </ControlTemplate.Triggers>
</ControlTemplate>

If you using Blend for Visual Studio, refer this to know how to access default Templates of any control. If you're using Visual Studio, you can check this.

WPF get the default TextBox mouse over color

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