BPASmartClient/BPASmartClient.CustomResource/RecDictionarys/RecTitleBarButton.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style x:Key="TitleBarStyle" TargetType="Button">
        <Setter Property="Foreground" Value="#5500c2f4" />
        <Setter Property="FontSize" Value="24" />
        <Setter Property="FontFamily" Value="../Fonts/#iconfont" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border Name="TitleBarBr" Background="Transparent">
                        <ContentPresenter
                            Margin="{TemplateBinding Margin}"
                            HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                            VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="true">
                            <Setter TargetName="TitleBarBr" Property="Background" Value="#33ffffff" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>