Open Read Only

uncle
uncle
edited May 2019 in Programming and customization

I am using Bricscad 19.2.07.
Using a [readonly] argument when opening a drawing does not seem to work.

*Work
DocumentCollection.Open(filePath) or DocumentCollection.Open(filePath, False)

*Not Work
DocumentCollection.Open(filePath, True)
System.NotSupportedException
Specified method is not supported

Is there a way to open read-only without errors?