RoundRectangle.BorderThickness
From Xojo Documentation
Property (As Double )
aRoundRectangle.BorderThickness = newDoubleValue
or
DoubleValue = aRoundRectangle.BorderThickness
New in 2019r2
Supported for all project types and targets.
or
DoubleValue = aRoundRectangle.BorderThickness
New in 2019r2
Supported for all project types and targets.
The width of the border, in points. The default is 1.