The following properties are required - although all are provided with default values.
More:
AllowRightProps
AutoParity
BackColor
BarRatio
BarReduce
BearerBarThickness
BorderSize
Caption
CharSpacing
CodeType
ExtendBearers
Extra1
Extra2
Font
ForeColor
GapToText
ImageHeight
ImageWidth
JustifyText
Left
MarginSize
NominalSize
Orientation
SaveImageFile
ScaleMode
ShowBearerBars
ShowCheckDigit
ShowLightMargins
ShowText
TargetHdpi
TargetVdpi
Top
TransparentBackground
Units
UseEnhanced
Width
xunit
AllowRightProps