AutoCAD

How to Load VLX File in AutoCAD?

Understanding VLX Files in AutoCAD

VLX files are specifically designed for use with AutoCAD software, functioning as compiled AutoLISP scripts. These files enable users to create and execute macros within AutoCAD, enhancing user workflows and automation. Unlike other scripting formats, a VLX file can encompass multiple AutoLISP routines, making it a robust tool for customization.

Prerequisites for Opening VLX Files

Before proceeding, ensure you have AutoCAD installed on your computer. The current version as of now is AutoCAD 2025, which supports various file types including VLX. Verify that your AutoCAD installation is set up correctly and updated to avoid compatibility issues.

Steps to Load a VLX File in AutoCAD

1. **Launch AutoCAD**: Open the AutoCAD application on your device.

2. **Access the APPLOAD Command**:
– Type `APPLOAD` into the command line and press `Enter`. This command will prompt the Load Application dialog box.

3. **Navigate to the Correct Directory**:
– In the Load Application dialog, look for the appropriate folder where your VLX file is saved. If needed, you can browse through your file system to locate the VLX file.

4. **Select the VLX File**:
– Once you’ve found the VLX file you want to load, select it and click the `Open` button. This will load the macro into AutoCAD.

5. **Add to Startup Suite (Optional)**:
– If you wish for the VLX file to load automatically whenever you start AutoCAD:
– Click on the `Startup Suite` option in the dialog.
– Click the `Add` button and browse to select your VLX file again.
– Click `Close` after adding.

6. **Confirm Loading**:
– You can check the command line for confirmation messages that indicate successful loading of the VLX file.

Editing VLX Files in AutoCAD

Directly editing a VLX file isn’t possible since it’s a compiled format. To make modifications, access the original source code used to create the VLX file. If you lack the source code, you must reach out to the creator for the file to make your adjustments.

Frequently Asked Questions

**What is the purpose of a VLX file in AutoCAD?**
VLX files serve as compiled AutoLISP scripts that provide a means to automate tasks within AutoCAD, allowing users to run complex routines with ease.

**Can I use a VLX file in AutoCAD LT?**
No, AutoCAD LT does not support the AutoLISP environment, meaning VLX files cannot be utilized in that version.

**How can I learn to create VLX files?**
To create VLX files, you need to write AutoLISP code using an editor like the Visual LISP IDE provided within AutoCAD. After drafting the code, compile it to create the VLX file for use.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.