Examples:

<igRibbon:XamRibbon.Tabs>
<igRibbon:RibbonTabItem Header="Shared_Tab_Format_Header">
<igRibbon:RibbonGroup VerticalAlignment="Top"
Caption="Shared_Tab_Format_Group_GlobalFont_Caption"
Id="FontGlobal">
<StackPanel Margin="0,0,0,0"
VerticalAlignment="Top"
Orientation="Horizontal">
<ns:MenuButton igRibbon:RibbonGroup.MaximumSize="ImageOnly" igRibbon:RibbonToolHelper.KeyTip="CC" ButtonType="Segmented">

<igRibbon:MenuTool.SmallImage>
<BitmapImage UriSource="/WpfApplication2;component/Resources/rebalance_session_16.png" />
</igRibbon:MenuTool.SmallImage>
<ns:MenuItemEx Header="Hello" IsCheckable="True" />
<ns:MenuItemEx Header="Hello1" />
<ns:MenuItemEx  Header="Hello2" InputGestureText="CTRL+R"/>

</ns:MenuButton>

<igRibbon:LabelTool x:Name="lb"
HorizontalAlignment="Right"
Caption="Good!" />
</StackPanel>
</igRibbon:RibbonGroup>
</igRibbon:RibbonTabItem>
</igRibbon:XamRibbon.Tabs>

Indeed, ns:MenuItemEx is my a control inherited from MenuItem, IKeyTip. 

ns:MenuButton is a menu button which is inherited from ItemsControl and IKeyTipContainer. The drop down which contains MenuItemEx will show up after pressing 'CC', achieved by codes below:

public IKeyTip[] GetKeyTips()
{
var keyTips = new List<IKeyTip>();
if (Items.Count == 0)
return keyTips.ToArray();

foreach (var sub in Items)
{
var keyTip = sub as IKeyTip;
if (keyTip == null)
continue;

keyTips.Add(keyTip);
}

_dropdownPopup.IsOpen = true;

return keyTips.ToArray();
}

but after pop up showing up, there is no key tip for MenuItemEx at all.

Let me know if any questions.

Thanks,

Nathan

Hello Nathan,

Can you possibly send a small sample that can reproduce your problem?

Thank you,

Mihoko Kamiishi