RoundRectangle.CornerWidth
From Xojo Documentation
Property (As Double )
aRoundRectangle.CornerWidth = newDoubleValue
or
DoubleValue = aRoundRectangle.CornerWidth
New in 2019r2
Supported for all project types and targets.
or
DoubleValue = aRoundRectangle.CornerWidth
New in 2019r2
Supported for all project types and targets.
The width of the rounded corners in pixels.
Sample Code
This code in the Open event produces rounded corners: