How can I use a Menu in the window's titlebar ?

[GF-Huang]

I want to put a Menu (because I need a single selection feature) into RightWindowCommands which has appearance like a default button inside RightWindowCommands.

I had try DropdownButton, MenuItem, Menu with MenuItem, but their appearance will be incompatible.

[GF-Huang]

Solution left to those in need:

App.xaml:

<Style xmlns:options="http://schemas.microsoft.com/winfx/2006/xaml/presentation/options"
       x:Key="ButtonWindowCommandsDropDownStyle"
       TargetType="Button"
       BasedOn="{StaticResource ButtonDropDownStyle}">
    <Style.Resources>
        <!-- override the dynamic resources -->
        <SolidColorBrush x:Key="GrayBrush8" options:Freeze="True" Color="Transparent" />
        <SolidColorBrush x:Key="GrayBrush5" options:Freeze="True" Color="Transparent" />
        <!-- for IsEnabled == False -->
        <SolidColorBrush x:Key="GrayBrush10" options:Freeze="True" Color="Transparent" />
    </Style.Resources>
</Style>

<Style x:Key="DropDownButtonWindowCommandsStyle"
       TargetType="controls:DropDownButton"
       BasedOn="{StaticResource {x:Type controls:DropDownButton}}">
    <Setter Property="Orientation" Value="Vertical" />
    <Setter Property="ArrowVisibility" Value="Collapsed" />
    <Setter Property="BorderThickness" Value="0" />
    <Setter Property="Opacity" Value="0.5" />
    <Setter Property="Background" Value="Transparent" />
    <Setter Property="Foreground" Value="White" />
    <Setter Property="ButtonStyle" Value="{DynamicResource ButtonWindowCommandsDropDownStyle}" />

    <Style.Triggers>
        <Trigger Property="IsMouseOver" Value="True">
            <Setter Property="Opacity" Value="1" />
        </Trigger>
    </Style.Triggers>
</Style>

MainWindow.xaml:

<controls:MetroWindow.RightWindowCommands>
    <controls:WindowCommands ShowLastSeparator="False">
        <controls:DropDownButton Content="{iconPacks:Material Kind=Translate}"
                                 Style="{StaticResource DropDownButtonWindowCommandsStyle}">
            
        </controls:DropDownButton>
    </controls:WindowCommands>
</controls:MetroWindow.RightWindowCommands>

Effect:

mouse not over

mouse over

[lorinkundert]

Good fix for a fixed theme, but not so good for customers that demand personalized themes.

[GF-Huang]

@lorinkundert For all the build-in themes, it doesn't seem to be a problem. 😄