[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

Automation

Posted on 1999-01-25
3
Medium Priority
?
217 Views
Last Modified: 2010-05-03
I have a VB6 app that from titme to time tries to read an AutoCAD drawing to check that the name is the same. However if AutoCAD is busy, I get an error generated by either AutoCAD or windows asking me to cancel or try again. This doesn't always work but in any case interrupts what I am doing in AutoCAD. Error trapping in VB6 doesn't seem to work. How can I test if AutoCAD is busy before trying to read drawing.
0
Comment
Question by:broadbent
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 12

Accepted Solution

by:
mark2150 earned 300 total points
ID: 1470562
Have it attempt to rename the drawing and that should only succeed if the drawing file is idle.

Also, AutoCAD creates a working file with the same base name as the drawing while it's active. This is a good indicator that the primary .DWG is in use. I think it's called *.DWK but don't bet the farm on it.

M

0
 
LVL 4

Author Comment

by:broadbent
ID: 1470563
Renaming is simple and it works. Thanks.
AutoCAD uses .dwk extensions to signify lock files which can be disabled by the user.
Actually the elegant way (someone else gave me) is to error trap the call using
app.OleServerBusyRaiseError = True
app.OleServerBusyTimeout = 100

thanks anyway and welcome to the points
0
 
LVL 4

Author Comment

by:broadbent
ID: 1470564
Further comment:
Renaming only tests if AutoCAD has loaded the drawing, not whether AutoCAD is busy or not.
0

Featured Post

Hire Technology Freelancers with Gigs

Work with freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely, and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction In a recent article (http://www.experts-exchange.com/A_7811-A-Better-Concatenate-Function.html) for the Excel community, I showed an improved version of the Excel Concatenate() function.  While writing that article I realized that no o…
This article describes how to use a set of graphical playing cards to create a Draw Poker game in Excel or VB6.
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…
Suggested Courses

656 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question