When Should Windows 64-bit Support be Enabled?

We recommended that Windows 64-bit support is only enabled when there is corporate requirement for it.

Windows 64-bit support should only be installed on a Build machine, not developer machines.

Drawbacks

Using Windows 64-bit support has some drawbacks:

· You must obtain your own 64-bit compiler, either Visual Studio 2010 Professional (or later) or Visual Studio 2012 Express for Desktop (or later).

· Compile times are longer because both 32-bit and 64-bit DLLs are always built.

· Functions which use DISPLAY, REQUEST or POPUP commands will fail to compile also in 32-bit DLLs.

Features not Supported

There are LANSA features that do not function or are not supported in 64-bit applications:

· Graphics Server

· Web Functions

· ZIP and specialized LANSA Built In Functions (BIFs)

· Explorer Component AutoRefresh Property