Description:
Container of grouped buttons. Each button within the button group can have a different label/image and value to send (depending on the property settings for Items and values). All other properties are similar for all buttons in the group.
Buttons can display different images for the state of the button, defined in the ItemsValuesImages property.
When a button is in a state for which an image has not been defined, the 'Up' state image of that button will be displayed (if that has been defined).
When you assign a value to any of the buttongroups or buttons in the form, the default value is replaced by the assigned value.
When you click any of the buttongroups or buttons on a form, this counts as assigning a value and the default value is replaced by the value set to the clicked button.
When you empty all buttongroups on the form, then the default will become valid again, following the 4 rules above.
Icon:

Properties:
Alignment
Color
Decimals
Description
Enabled
Font
GroupName
Height
HelpText
HyperLink
ItemsValuesImages
Layout
Left
Length
Name
OccursData
Parent
SdfAttributes
ShowBorder
TabNumber
TabStop
Top
Type
UpperCase
Visible
Width
WSOrder
ZOrder