BevelButton.LockLeft

From Xojo Documentation

Property (As Boolean )
aBevelButton.LockLeft = newBooleanValue
or
BooleanValue = aBevelButton.LockLeft

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 owning window. LockLeft has no effect unless LockRight is True.