'Declaration Public Function Index( _ ByVal button As TBarButton _ ) As Integer
public int Index( TBarButton button )
If the button does not exist within this group, -1 will be returned.
If multiple copies of the button have been added to this group, the lowest index of the first copy found will be returned.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2