Question

A prospective client has a very large VB6 program. They claim that they are running into a memory limitation. They cannot add more lines of code.

Do you know what is the upper limit and is there are way around it?

Answer 1

There’s some documentation of VB’s limits on MSDN:

Code Limitations:

The amount of code that can be loaded into a form, class, or standard
module is limited to 65,534 lines… [etc]

Project Limitations:

A single project can contain up to 32,000 “identifiers” (any
nonreserved keyword), which include, but are not limited to, forms,
controls, modules, variables, constants, procedures, functions, and
objects. Note that the actual number of identifiers is limited to
available memory.

Data Limitations:

The data segment (that is, the data defined in the Declarations
section) of the VBA module of any form or module in Visual Basic can
be up to 64K.