Drag & drop user interface customizations do not involve programming; with the customized user interface (CUI) editor, you drag a command to a menu or toolbar or right-click to add, delete, or modify a user interface element.


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A command alias is an abbreviation that you enter at the command prompt instead of entering the entire command name. For example, you can enter c instead of a circle to start the circle command.


Manages the customize quick access toolbar elements in the product. Add or delete commands at the quick access toolbar to make the drawing environment specific to certain types of tasks.

Import, Export and Migrate
User Custom Settings

GstarCAD 2021 supports importing and exporting user custom settings. Therefore, your preferred custom settings like user profiles, CUI, line type, hatches, etc., can easily migrate from earlier versions to GstarCAD 2021.

In addition, users can also import customized Tool Palettes from AutoCAD.



Object GRX technology provides the foundation for design software applications to share intelligent object data.

You can run third-party object GRX application programs or write your own plug-in applications developed with VBA/GRX/DBX/LISP/VLISP can be loaded to GstarCAD.

GstarCAD .net API enables you to

manipulate the application and drawing files programmatically with exposed libraries and can be accessed by many different programming languages and environments.

Users can automate tasks such as creating and modifying objects stored in the database of a drawing file or change the contents of a customization file.

Lisp Debugger

Based on Visual Studio Code from Microsoft®, Lisp Debugger is a useful tool for lisp-writers and developers to check, modify and debug their codes easily and efficiently.