Stacked large buttons in ribbon?

[edgars_miskins]

Hello, to all.
I am trying to create my own custom ribbon panel with my own buttons.
I've come to understand, that whether I get a large button or a small one depends on whether I use stacking.
It stacking is not used, a large button is created. If stacking is used - small ones.

But in the original Revit UI there seem to be cases with large stacked buttons. For example these are clearly large buttons stacked.

How is this done?

When I do the regular stacking like so

var manualButtonsLeft = ribbonPanelWallbox.AddStackedItems(
                btn_scBxManual_TopLeft,
                btn_scBxManual_BotLeft);

I always get small buttons:

 

Is there a way to change button size?

[Kennan.Chen · Accepted solution]

void SetLargeButtonStyle(RibbonButton button)
{
    button.ResizeStyle = RibbonItemResizeStyles.NoResize;
    button.Orientation = Orientation.Vertical;
    button.Size        = RibbonItemSize.Large;
}

Note that the RibbonButton is Autodesk.Windows.RibbonButton provided by AdWindows.dll

[edgars_miskins]

That was it. Thank you!
I was trying to achieve this without AdWindows.

Interesting, how the use of AdWindows.dll is not officially supported, but lots of useful tweaks are available only through this library.

[Kennan.Chen]

It is officially supported, partially, not by Revit but by AutoCAD. You can refer to the AutoCAD managed .NET docs.

BTW, visual studio intellisense could actually be a much better documentation after hours of exploring.