Expert: Scott Cook - 11/11/2005

Question
How can you determine the screen resolution using Autolisp?  It's important when displaying slides.  You'd like to make them in 1024x768 or higher, but what if the user has 800x600 or lower?  Then you need a lower-res slide.  Can you determine the screen resolution with Autolisp so that you can display the highest resolution slide as possible?

Answer
here's a chunk of code that will do it for you. I had the same problem already with something else.

 (vl-load-com)
 (setq acadObject (vlax-get-acad-object))
 ;make sure window is maximized
 (if (/= (vlax-get-property acadobject 'windowstate) 3)
   (vlax-put-property acadobject 'windowstate 3)
 )
 ;figure out the screen resolution
 (setq screenwidth (vlax-get-property acadobject 'width))
 (setq screenheight (vlax-get-property acadobject 'height))