From Xojo Documentation

Property (As Boolean )
aWebControl.LockLeft = newBooleanValue
BooleanValue = aWebControl.LockLeft

New in 2010r4

Supported for all project types and targets.

Determines whether the left edge of the control should stay at a set distance from the left edge of the parent control, if there is one, or the owning web page.


The locking properties set at design-time, so they are effectively read-only at run-time.