How to assign number of opend files in the same time ???

Hello friends !

How can I control the number of opened files in AutoCad-2010 ?

Please help me how to do that . I have to work in 2 files Simultaneously.

Thanks

You can open as many drawings as you need without starting a new session of AutoCAD. I've had as many as 10 drawings open at one time with no problem. Use the key combo CTRL+TAB to cycle through each drawing.

Yes I did that b4 . But now I have a problem : when I try to open a new drawing, AutoCAD closes the current one. My question is : How can I make AutoCAD OPENS multiple files ??? .... any way thanks a lot !!!

Type "SDI" at the command line

0 = Multiple drawings

1 = Single Document Interface

The best way I've found to manage multiple open drawings is using AutoCAD's Free Bonus Tool MDITabs.

So much so, that I wrote a System Variable Reactor that automagically loads/unloads the appropriate MDITabs version for R17* 32-Bit/64-Bit, and R18* 32-Bit/64-Bit, based upon the SDI System Variable. I can post if you're interested.

I know this isn't a programming forum, but as it's germane, and to manually demonstrate, here's a simple command version:

(defun c:MdiTabs  (/ _64Bit-p)
 ;; © RenderMan, 2011
 (vl-load-com)

 (defun _64Bit-p ()
 ;; © RenderMan, 2011
 ;; Returns T if version is 64Bit
 ;; Example: (_64bit-p)
 (vl-load-com)
 (if (vl-string-search "64" (getenv "PROCESSOR_ARCHITECTURE"))
   T
   nil))
 
 ((lambda (key sdi / mditabs flag)
    (if (and
          sdi
          (setq mditabs
                 (cond
                   ((vl-string-search "17" key)                        ; 2007, 2008, 2009
                    (if (_64Bit-p)
                      "mditab17[color=red]x64[/color].arx"
                      "mditab17.arx"))
                   ((vl-string-search "18" key)                        ; 2010, 2011, 2012
                    (if (_64Bit-p)
                      "mditab18[color=red]x64[/color].arx"
                      "mditab18.arx"))))
          (setq flag (findfile mditabs))
          (not (vl-position mditabs (arx))))
      (and (arxload mditabs) (princ "\rMDITAB: LOADED "))
      (cond
        (flag (and (arxunload mditab) (princ "\rMDITAB: UNLOADED ")))
        (mditabs
         (prompt (strcat "\n** \"" mditabs "\" cannot be found ** ")))
        (sdi (prompt "\n** This AutoCAD version not supported ** "))
        ((prompt "\n** Command not allowed in SDI mode ** ")))))
   (vlax-product-key)
   (= 0 (getvar 'sdi)))
 (princ))

** Note - I chose to rename the 64-Bit MDITabs files to include a suffix of *x64.arx so that all files could reside in the same directory. These files must reside within the Support Files Search Paths (SFSP).

While MDITabs will successfully load when SDI = 1, I chose to prevent this in the above command, as MDITabs really serves no purpose unless one is able to actually open multiple drawings. Also included is a sub-function that I wrote to test for 64-Bit versions. Enjoy!

HTH

Thank you friends ! thank you nestly, your answer is very useful easy and fast ... so thanks again !