In AutoCAD Release 2000, Visual LISP will no longer compile ARX files, only
VLX files. You cannot demand load VLX files with settings in the Windows
registry. The attached program, VLXLoad.arx, can be used to demand load VLX
files. Using the attached ARX file VLXLoad.arx, you can demand load a vlx
file of the same name in the same folder as the ARX file. If you wish, you
can recompile the ARX program with the filename of your VLX file hard-coded.

1. Open the attachment in this email.

2. Copy VLXLoad.arx to the same folder where you have your VLX file and
rename VLXLoad.arx to the same name as your VLX file.

Example:

Your VLX file is called MyApp.vlx and is in the C:\Program Files\My
Company\MyProduct folder. Copy VLXLoad.arx to the C:\Program Files\My
Company\MyProduct folder and rename it to MyApp.arx.

3. Create your registry settings the same way you would set them up for
demand loading any other ARX file. You only need the Loader key in your
application's registry tree.

4. Open AutoCAD 2000 and try using one of the command functions that you
have defined in your VLX file.

5. Open a new document and try to use the same command function again.

If you would prefer to hard-code a VLX filepath into the ARX file you can
use Visual C++ 6.0 to recompile the CPP with the filename as an argument to
the LoadVLX function. The file MyApp.vlx must be in the same folder as
MyApp.arx.

Example:

  case AcRx::kInitAppMsg: //Initialize application
   acrxUnlockApplication( pkt );
   acrxDynamicLinker->registerAppMDIAware( pkt );
   LoadVLX("MyApp.vlx");

Many thanks to the following people for their assistance in creating this
public domain program:

Autodesk Developer Consulting
Owen Wengerd, President, ManuSoft ==> http://www.manusoft.com

I could not have done this without their help. Please note that if you have
any questions about this program, it will probably turn out that I know even
less than you do about C++ programming. I'm not kidding, I don't even know
how to concatenate two strings in C++. So as much as I would prefer to be
helpful to other people, it will almost certainly be a waste of time asking
me about it! If you have any questions about AutoLISP, that I know about!

Robert Albert
Director of Technical Services
Microsol Resources Corporation
www.microsolresources.com