Microsoft Office Forums - View Single Post - Ribbon Customization - Gallery vs ComboBox - built-in control split button

Charles Kenyon · 10-29-2025, 11:05 AM

I then tried the following:

Code:

<customUI  
    xmlns="http://schemas.microsoft.com/office/2009/07/customui" 
    xmlns:mso="http://schemas.microsoft.com/office/2009/07/customui" >
    <ribbon >
        <tabs >
            <tab id="newTab" label="New Tab">
                <group id="newGroup" label="Highlight">
                    <gallery idMso="TextHighlightColorPicker" showLabel="false" />
                </group >
            </tab >
        </tabs >
    </ribbon >
</customUI >

That displayed the ribbon tab(after the error message), with an original size button in the group.
Like your original try, there was no left/right dichotomy; both sides ended up displaying the drop-down gallery.

Also tried:

Code:

<customUI  
    xmlns="http://schemas.microsoft.com/office/2009/07/customui" 
    xmlns:mso="http://schemas.microsoft.com/office/2009/07/customui" >
    <ribbon >
        <tabs >
            <tab id="newTab" label="New Tab">
                <group id="newGroup" >
                    <mso:gallery idQ="mso:TextHighlightColorPicker" 
                        showInRibbon="false" 
                        size="normal"
                        visible="true"/>
                </group >
            </tab >
        </tabs >
    </ribbon >
</customUI >

Same result.

I tried adding the split button control using the UI and ended up with something that worked fine.
00 deleteme 1.png