Programming code with runtime form

Posted on 2014-01-22
Medium Priority
Last Modified: 2014-01-22
Hi, looking a way to program "external executable" subroutine (PRG) within a runtime form.  Basically, my application is self-contained and I recently added "customs" programming to satisfy some customer specific requirements without having to modify core application.  So, I'm looking to create a form with some selection tools to allow authorized user to see and modify external PRG code.  User can copy code from one PRG, add it to another PRG and then save this "new work".  
Is this something that can be done under VFP 9
Question by:meep_meep
  • 2
  • 2
LVL 43

Expert Comment

ID: 39800095
This is very easy:
1) To modify PRG code issue MODIFY COMMAND <filename>
2) To compile the modified code issue COMPILE <filename>

Above commands work even under VFP 9 run-time so you may place then almost anywhere.

If the Edit menu is visible the CTRL+C and CTRL+V etc. shortcuts are active.

MODIFY COMMAND has several useful clauses like NOEDIT which allows just viewing of the source code so this can be used to copy the existing fragments of code.

COMPILE produces <filename>.ERR if compile error occurs.

WARNING: Remember the fact users can harm app data this way...

Author Comment

ID: 39800160
So, I can issue a Modify Command within a runtime Form ?   To be more specific, my form will have a list of customer specific external prg.   On InteractiveChange event, I will be able to show within an "Edit box like" the specified PRG in my form ?
LVL 43

Accepted Solution

pcelba earned 2000 total points
ID: 39800184
Yes. The Edit box should be bound (via ControlSource property) to some memo field and the interactive event may read the memo contents by APPEND MEMO FROM <YourFile>.PRG command then user may edit the code and save it back to PRG or keep it in the memo field.

EXECSCRIPT command allows to execute the code inside the memo.

Of course you don't need to use memo field but the whole thing may be in some variable or in a form property.  You may read the PRG file into the variable by FILETOSTR() function call in InteractiveChange event. Reading the local file this way is very fast.

Author Closing Comment

ID: 39800762
As usual, you're quick and efficient. Thanks

Featured Post

Get your problem seen by more experts

Be seen. Boost your question’s priority for more expert views and faster solutions

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Microsoft Visual FoxPro (short VFP) is a programming language with it’s own IDE and database, ranking somewhat between Access and VB.NET + SQL Server (Express). Product Description: http://msdn.microsoft.com/en-us/vfoxpro/default.aspx (http://msd…
This article begins an exploration into the modern world of gaming in a scope intended to introduce gaming culture and the industry to those who know nothing about it. What's happening in gaming affects us all in one way or another, and this article…
If you are looking for an automated solution for backup single or multiple Office 365 user mailboxes to Outlook data file, then you can use Kernel Office 365 Backup & Restore tool. Go through the video to check out the steps to backup single or mult…
From store locators to asset tracking and route optimization, learn how leading companies are using Google Maps APIs throughout the customer journey to increase checkout conversions, boost user engagement, and optimize order fulfillment. Powered …

623 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