AutoCAD Hacker's Handbook
Short summary:
Step into the mind of an Express Tools programmer and learn his favorite tricks for
programming with Lisp, VB and VBA. Some of the topics this course will cover are tips for
debugging, entity creation, finding information, techniques for accessing VB functionality from lisp,
as well as tips on software design. Speaker Name: Randy Kintzley
Course: PG33-1
Course Description: AutoCAD Hacker's Handbook
Long summary:
Some debugging tips:
- Putting in break points with getstring and printing results with print
- Try it at the command line to see how it works
- Comment closing parens to match opening ones
- Use local variables when you can
- Remember to initialize counters and other variables
How to call VBA/ActiveX functions from lisp
Ever want to change a setting in AutoCAD that is only changeable from the options dialog
box?
For example, set the current profile or turn the screen menu on from lisp. There's no system
variable for displaying the screen menu and the current profile can be viewed as a sysvar but it's
read-only so you can't set it. However, from VBA these things can be done quite easily. The
screen menu is controlled by a property on the preferences display object.
The current profile is
controlled by a profiles object that can also be accessed through the preferences object.
The good news is that you can use the same methods and properties that are accessible in
VBA from LISP as well.
Source: www.vuw.ac.nz
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