Remove the chevron/arrow added to the AppBarButton when a Flyout is attached

Question

I have two AppBarButton which are placed in a grid. They display as intended when there is no flyout attached, however at the point I attach a flyout the system is adding a chevron/arrow to the right of the icon.

How can I remove chevron/arrow? I realise this may be for usability purposes, but given the ... implies a menu and the other is displaying a Flyout with a text box, I feel these are redundant.

XAML is as follows:

            <AppBarButton Icon="NewFolder" Grid.Column="1" HorizontalAlignment="Right" VerticalAlignment="Center" Height="40">
                <AppBarButton.Flyout>
                    <Flyout>
                        <!-- Removed for brevity -->
                    </Flyout>
                </AppBarButton.Flyout>
            </AppBarButton>

Sigismond

Does the following answer work? – Dichlorodifluoromethane

Answer 1

The chevron is FontIcon and name is SubItemChevron in AppBarButton control. It's Foreground is MenuFlyoutSubItemChevron. So the easy way is make the Foreground transparent, you could custom MenuFlyoutSubItemChevron like the following.

<StaticResource x:Key="MenuFlyoutSubItemChevron" ResourceKey="SystemControlDisabledTransparentBrush" />

The above way just make FontIcon transparent but not hidden. If you want to hide FontIcon you need custom AppBarButton style. Find HasFlyout VisualState and change SubItemChevron.Visibility to Collapsed.

<VisualStateGroup x:Name="FlyoutStates">
    <VisualState x:Name="NoFlyout" />
    <VisualState x:Name="HasFlyout">
        <VisualState.Setters>
            <Setter Target="SubItemChevron.Visibility" Value="Collapsed" />
        </VisualState.Setters>
    </VisualState>    
</VisualStateGroup>

Update

<Style TargetType="AppBarButton">
    <Setter Property="Background" Value="{ThemeResource AppBarButtonBackground}" />
    <Setter Property="Foreground" Value="{ThemeResource AppBarButtonForeground}" />
    <Setter Property="BorderBrush" Value="{ThemeResource AppBarButtonBorderBrush}" />
    <Setter Property="HorizontalAlignment" Value="Left" />
    <Setter Property="VerticalAlignment" Value="Top" />
    <Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}" />
    <Setter Property="FontWeight" Value="Normal" />
    <Setter Property="Width" Value="68" />
    <Setter Property="UseSystemFocusVisuals" Value="{StaticResource UseSystemFocusVisuals}" />
    <Setter Property="AllowFocusOnInteraction" Value="False" />
    <Setter Property="KeyboardAcceleratorPlacementMode" Value="Hidden" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="AppBarButton">
                <Grid x:Name="Root"
                    MinWidth="{TemplateBinding MinWidth}"
                    MaxWidth="{TemplateBinding MaxWidth}"
                    Background="{TemplateBinding Background}"
                    BorderBrush="{TemplateBinding BorderBrush}"
                    BorderThickness="{TemplateBinding BorderThickness}"
                    CornerRadius="{TemplateBinding CornerRadius}" >

                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="ApplicationViewStates">
                            <VisualState x:Name="FullSize" />
                            <VisualState x:Name="Compact">

                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="Visibility">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed" />
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="LabelOnRight">

                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentViewbox" Storyboard.TargetProperty="Margin">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarButtonContentViewboxMargin}" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentRoot" Storyboard.TargetProperty="MinHeight">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarThemeCompactHeight}" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="(Grid.Row)">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="0" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="(Grid.Column)">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="1" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="TextAlignment">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="Left" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="Margin">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource AppBarButtonTextLabelOnRightMargin}" />
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="LabelCollapsed">

                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentRoot" Storyboard.TargetProperty="MinHeight">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarThemeCompactHeight}" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="Visibility">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed" />
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Overflow">
                                <VisualState.Setters>
                                    <Setter Target="ContentRoot.MinHeight" Value="0" />
                                    <Setter Target="ContentViewbox.Visibility" Value="Collapsed" />
                                    <Setter Target="TextLabel.Visibility" Value="Collapsed" />
                                    <Setter Target="OverflowTextLabel.Visibility" Value="Visible" />
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="OverflowWithToggleButtons">
                                <VisualState.Setters>
                                    <Setter Target="ContentRoot.MinHeight" Value="0" />
                                    <Setter Target="ContentViewbox.Visibility" Value="Collapsed" />
                                    <Setter Target="TextLabel.Visibility" Value="Collapsed" />
                                    <Setter Target="OverflowTextLabel.Visibility" Value="Visible" />
                                    <Setter Target="OverflowTextLabel.Margin" Value="38,0,12,0" />
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="OverflowWithMenuIcons">
                                <VisualState.Setters>
                                    <Setter Target="ContentRoot.MinHeight" Value="0" />
                                    <Setter Target="ContentViewbox.HorizontalAlignment" Value="Left" />
                                    <Setter Target="ContentViewbox.VerticalAlignment" Value="Center" />
                                    <Setter Target="ContentViewbox.Width" Value="16" />
                                    <Setter Target="ContentViewbox.Height" Value="16" />
                                    <Setter Target="ContentViewbox.Margin" Value="12,0,12,0" />
                                    <Setter Target="TextLabel.Visibility" Value="Collapsed" />
                                    <Setter Target="OverflowTextLabel.Visibility" Value="Visible" />
                                    <Setter Target="OverflowTextLabel.Margin" Value="38,0,12,0" />
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="OverflowWithToggleButtonsAndMenuIcons">
                                <VisualState.Setters>
                                    <Setter Target="ContentRoot.MinHeight" Value="0" />
                                    <Setter Target="ContentViewbox.HorizontalAlignment" Value="Left" />
                                    <Setter Target="ContentViewbox.VerticalAlignment" Value="Center" />
                                    <Setter Target="ContentViewbox.Width" Value="16" />
                                    <Setter Target="ContentViewbox.Height" Value="16" />
                                    <Setter Target="ContentViewbox.Margin" Value="38,0,12,0" />
                                    <Setter Target="TextLabel.Visibility" Value="Collapsed" />
                                    <Setter Target="OverflowTextLabel.Visibility" Value="Visible" />
                                    <Setter Target="OverflowTextLabel.Margin" Value="76,0,12,0" />
                                </VisualState.Setters>
                            </VisualState>

                        </VisualStateGroup>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualState x:Name="Normal">

                                <Storyboard>
                                    <PointerUpThemeAnimation Storyboard.TargetName="OverflowTextLabel" />
                                </Storyboard>
                            </VisualState>

                            <VisualState x:Name="PointerOver">
                                <VisualState.Setters>
                                    <Setter Target="Root.Background" Value="{ThemeResource AppBarButtonBackgroundPointerOver}" />
                                    <Setter Target="Root.BorderBrush" Value="{ThemeResource AppBarButtonBorderBrushPointerOver}" />
                                    <Setter Target="Content.Foreground" Value="{ThemeResource AppBarButtonForegroundPointerOver}" />
                                    <Setter Target="TextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundPointerOver}" />
                                    <Setter Target="OverflowTextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundPointerOver}" />
                                    <Setter Target="KeyboardAcceleratorTextLabel.Foreground" Value="{ThemeResource AppBarButtonKeyboardAcceleratorTextForegroundPointerOver}" />
                                </VisualState.Setters>

                                <Storyboard>
                                    <PointerUpThemeAnimation Storyboard.TargetName="OverflowTextLabel" />
                                </Storyboard>
                            </VisualState>

                            <VisualState x:Name="Pressed">
                                <VisualState.Setters>
                                    <Setter Target="Root.Background" Value="{ThemeResource AppBarButtonBackgroundPressed}" />
                                    <Setter Target="Root.BorderBrush" Value="{ThemeResource AppBarButtonBorderBrushPressed}" />
                                    <Setter Target="Content.Foreground" Value="{ThemeResource AppBarButtonForegroundPressed}" />
                                    <Setter Target="TextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundPressed}" />
                                    <Setter Target="OverflowTextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundPressed}" />
                                    <Setter Target="KeyboardAcceleratorTextLabel.Foreground" Value="{ThemeResource AppBarButtonKeyboardAcceleratorTextForegroundPressed}" />
                                </VisualState.Setters>

                                <Storyboard>
                                    <PointerDownThemeAnimation Storyboard.TargetName="OverflowTextLabel" />
                                </Storyboard>
                            </VisualState>

                            <VisualState x:Name="Disabled">
                                <VisualState.Setters>
                                    <Setter Target="Root.Background" Value="{ThemeResource AppBarButtonBackgroundDisabled}" />
                                    <Setter Target="Root.BorderBrush" Value="{ThemeResource AppBarButtonBorderBrushDisabled}" />
                                    <Setter Target="Content.Foreground" Value="{ThemeResource AppBarButtonForegroundDisabled}" />
                                    <Setter Target="TextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundDisabled}" />
                                    <Setter Target="OverflowTextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundDisabled}" />
                                    <Setter Target="KeyboardAcceleratorTextLabel.Foreground" Value="{ThemeResource AppBarButtonKeyboardAcceleratorTextForegroundDisabled}" />
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="OverflowNormal">

                                <Storyboard>
                                    <PointerUpThemeAnimation Storyboard.TargetName="ContentRoot" />
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="OverflowPointerOver">
                                <VisualState.Setters>
                                    <Setter Target="Root.Background" Value="{ThemeResource AppBarButtonBackgroundPointerOver}" />
                                    <Setter Target="Root.BorderBrush" Value="{ThemeResource AppBarButtonBorderBrushPointerOver}" />
                                    <Setter Target="Content.Foreground" Value="{ThemeResource AppBarButtonForegroundPointerOver}" />
                                    <Setter Target="TextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundPointerOver}" />
                                    <Setter Target="OverflowTextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundPointerOver}" />
                                    <Setter Target="KeyboardAcceleratorTextLabel.Foreground" Value="{ThemeResource AppBarButtonKeyboardAcceleratorTextForegroundPointerOver}" />
                                    <Setter Target="SubItemChevron.Foreground" Value="{ThemeResource AppBarButtonSubItemChevronForegroundPointerOver}" />
                                </VisualState.Setters>

                                <Storyboard>
                                    <PointerUpThemeAnimation Storyboard.TargetName="ContentRoot" />
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="OverflowPressed">
                                <VisualState.Setters>
                                    <Setter Target="Root.Background" Value="{ThemeResource AppBarButtonBackgroundPressed}" />
                                    <Setter Target="Root.BorderBrush" Value="{ThemeResource AppBarButtonBorderBrushPressed}" />
                                    <Setter Target="Content.Foreground" Value="{ThemeResource AppBarButtonForegroundPressed}" />
                                    <Setter Target="TextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundPressed}" />
                                    <Setter Target="OverflowTextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundPressed}" />
                                    <Setter Target="KeyboardAcceleratorTextLabel.Foreground" Value="{ThemeResource AppBarButtonKeyboardAcceleratorTextForegroundPressed}" />
                                    <Setter Target="SubItemChevron.Foreground" Value="{ThemeResource AppBarButtonSubItemChevronForegroundPressed}" />
                                </VisualState.Setters>

                                <Storyboard>
                                    <PointerDownThemeAnimation Storyboard.TargetName="ContentRoot" />
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="OverflowSubMenuOpened">
                                <VisualState.Setters>
                                    <Setter Target="Root.Background" Value="{ThemeResource AppBarButtonBackgroundSubMenuOpened}" />
                                    <Setter Target="Root.BorderBrush" Value="{ThemeResource AppBarButtonBorderBrushSubMenuOpened}" />
                                    <Setter Target="Content.Foreground" Value="{ThemeResource AppBarButtonForegroundSubMenuOpened}" />
                                    <Setter Target="TextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundSubMenuOpened}" />
                                    <Setter Target="OverflowTextLabel.Foreground" Value="{ThemeResource AppBarButtonForegroundSubMenuOpened}" />
                                    <Setter Target="KeyboardAcceleratorTextLabel.Foreground" Value="{ThemeResource AppBarButtonKeyboardAcceleratorTextForegroundSubMenuOpened}" />
                                    <Setter Target="SubItemChevron.Foreground" Value="{ThemeResource AppBarButtonSubItemChevronForegroundSubMenuOpened}" />
                                </VisualState.Setters>

                                <Storyboard>
                                    <PointerUpThemeAnimation Storyboard.TargetName="ContentRoot" />
                                </Storyboard>
                            </VisualState>

                        </VisualStateGroup>
                        <VisualStateGroup x:Name="InputModeStates">
                            <VisualState x:Name="InputModeDefault" />
                            <VisualState x:Name="TouchInputMode">
                                <VisualState.Setters>
                                    <Setter Target="OverflowTextLabel.Padding" Value="{StaticResource AppBarButtonOverflowTextTouchMargin}" />
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="GameControllerInputMode">
                                <VisualState.Setters>
                                    <Setter Target="OverflowTextLabel.Padding" Value="{StaticResource AppBarButtonOverflowTextTouchMargin}" />
                                </VisualState.Setters>
                            </VisualState>

                        </VisualStateGroup>
                        <VisualStateGroup x:Name="KeyboardAcceleratorTextVisibility">
                            <VisualState x:Name="KeyboardAcceleratorTextCollapsed" />
                            <VisualState x:Name="KeyboardAcceleratorTextVisible">
                                <VisualState.Setters>
                                    <Setter Target="KeyboardAcceleratorTextLabel.Visibility" Value="Visible" />
                                </VisualState.Setters>
                            </VisualState>

                        </VisualStateGroup>
                        <VisualStateGroup x:Name="FlyoutStates">
                            <VisualState x:Name="NoFlyout" />
                            <VisualState x:Name="HasFlyout">
                                <VisualState.Setters>
                                    <Setter Target="SubItemChevron.Visibility" Value="Collapsed" />
                                </VisualState.Setters>
                            </VisualState>

                        </VisualStateGroup>

                    </VisualStateManager.VisualStateGroups>
                    <Grid x:Name="ContentRoot" MinHeight="{ThemeResource AppBarThemeMinHeight}">

                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="*" />
                            <ColumnDefinition Width="Auto" />
                            <ColumnDefinition Width="Auto" />
                        </Grid.ColumnDefinitions>

                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="Auto" />
                        </Grid.RowDefinitions>
                        <Viewbox x:Name="ContentViewbox"
                            Height="20"
                            Margin="{ThemeResource AppBarButtonContentViewboxCollapsedMargin}"
                            HorizontalAlignment="Stretch"
                            AutomationProperties.AccessibilityView="Raw" >
                            <ContentPresenter x:Name="Content"
                                Height="20"
                                Content="{TemplateBinding Icon}"
                                Foreground="{TemplateBinding Foreground}"/>
                        </Viewbox>
                        <TextBlock x:Name="TextLabel"
                            Grid.Row="1"
                            Text="{TemplateBinding Label}"
                            Foreground="{TemplateBinding Foreground}"
                            FontSize="12"
                            FontFamily="{TemplateBinding FontFamily}"
                            TextAlignment="Center"
                            TextWrapping="Wrap"
                            Margin="2,0,2,6"
                            AutomationProperties.AccessibilityView="Raw" />
                        <TextBlock x:Name="OverflowTextLabel"
                            Text="{TemplateBinding Label}"
                            Foreground="{TemplateBinding Foreground}"
                            FontFamily="{TemplateBinding FontFamily}"
                            TextAlignment="Left"
                            TextTrimming="Clip"
                            TextWrapping="NoWrap"
                            HorizontalAlignment="Stretch"
                            VerticalAlignment="Center"
                            Margin="12,0,12,0"
                            Padding="{StaticResource AppBarButtonOverflowTextLabelPadding}"
                            Visibility="Collapsed"
                            AutomationProperties.AccessibilityView="Raw" />
                        <TextBlock x:Name="KeyboardAcceleratorTextLabel"
                            Grid.Column="1"
                            Style="{ThemeResource CaptionTextBlockStyle}"
                            Text="{TemplateBinding KeyboardAcceleratorTextOverride}"
                            MinWidth="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.KeyboardAcceleratorTextMinWidth}"
                            Margin="24,0,12,0"
                            Foreground="{ThemeResource AppBarButtonKeyboardAcceleratorTextForeground}"
                            HorizontalAlignment="Right"
                            VerticalAlignment="Center"
                            Visibility="Collapsed"
                            AutomationProperties.AccessibilityView="Raw" />
                        <FontIcon x:Name="SubItemChevron"
                            Grid.Column="2"
                            Glyph="&#xE0E3;"
                            FontFamily="{ThemeResource SymbolThemeFontFamily}"
                            FontSize="12"
                            AutomationProperties.AccessibilityView="Raw"
                            Foreground="{ThemeResource MenuFlyoutSubItemChevron}"
                            Margin="12,0,12,0"
                            MirroredWhenRightToLeft="True"
                            Visibility="Collapsed" />

                    </Grid>

                </Grid>

            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Dichlorodifluoromethane

Thanks for the answer. I need to remove the item (i.e. the space occupied needs to go), which means the second part. "Find HasFlyout VisualState..." where do I find that? – Sigismond

You could get the style in the generic.xaml file. For get it you could press F12 in this line <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">. – Dichlorodifluoromethane

For costuming it, you need copy complete AppBarButton style and modify the VisualState like above, if you can not find it, I will post the complete style. – Dichlorodifluoromethane

What I really need is for the answer to be edited with the exact steps to hide the chevrons (i.e. the second part of your answer). Sorry, it's too vague at the moment. – Sigismond

@Sam, I have add the complete appbarbutton style, you could use it directly – Dichlorodifluoromethane

Thanks, I have it working by pasting all of that into the Page.Resources. I am overriding a lot of built in behaviour, is there a bare minimum that I can do? Also, can you please suggest where I can submit a change for this because I think this should be a property on the AppBarButton itself and should not require changes like this to remove. – Sigismond

Yep, you are right, but appbarbutton does not provide such property to hide chevron icon. So you need to copy the complete style and edit the HasFlyout visual state. And this will not override the default behavior, if you don't want to all appbarbutton render this style, you could give the style separate x:key such as customAppbarbutton. – Dichlorodifluoromethane

This causes issues if your app supports back to older versions of windows such as 1709 or older. This is a big problem. You can't target 1809 because the new default styles cause issues and you can support back to 1709 if you do... – Montero

Copying the whole style and modifying it works on 1909. But my app supports backwards up to 1709. Testing on an 1803 still crashes. There needs to be a way to hide that chevron as Sam suggested. – Latchstring