[ Version ( since = "3.6" ) ]
public bool get_offset_value (string? name, out double value)
Fetches the value specified for the offset marker name in this, returning
true in case an offset named name was found.
| this |
a LevelBar |
| name |
the name of an offset in the bar |
| value |
location where to store the value |
|
true if the specified offset is found |