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eMag Jun 2015 Issue - Paradox Edition

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Each month on or after the 1st, and only once a month, we will send you content from up to 5 community groups. If you select this Paradox group, you'll receive the following content below mixed in with the other groups you elect to include.

Prestwood eMag
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  June 2015 - Paradox Edition (1682 of 4,775 subscribers receive this group's content.) Year 17 Issue 6  
I.T. Discussion Community!


Expert guidance from working professionals!
Help Wanted! topic:
Contribute To The Prestwood Community
by Mike Prestwood
We are always looking for talented developers to participate in our message boards, post articles, etc.

Lighter Side topic:
Scrambled Text
by Mike Prestwood
Apparently if the first and last letters are correct, the rest don't matter.





 Paradox Group Top 
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P9 Book: Power Programming topic (classic post):
Power: Chapter 12, Handling Reports
by Mike Prestwood

Chapter 12, "Handling Reports" from Paradox 9 Power Programming by Mike Prestwood.


OPAL: Language Basics topic (classic post):
A 10 Minute ObjectPAL Quick Start
by Mike Prestwood

If you've never programmed in ObjectPAL, spend 10 minutes and see how easy it is to program Paradox for Windows.


 Monthly Paradox Lesson
OPAL: Language Details Topic:
Code Snippet of the Month

By Reference or Value (and by constant)
The default for parameters is by value. For by reference, add var in front of the parameter. ObjectPAL also offers constant parameters where you add const in front of the parameter. A constant parameter is like a read-only parameter the compiler can optimize. You cannot assign a value to a constant parameter.

method cmCode(s String) ;...s is by value.

endMethod
 
  
method pushButton(var eventInfo Event)
  ;...eventInfo is by reference.

endMethod
  

method cmCode(Const s String)
  ;...s is a constant read-only parameter.

endMethod
  
proc cpNever() String
  return "Never duplicate a line of code!"
endProc

Paradox Tables Topic:
Definition of the Month: Paradox Net Dir

The directory location of the Paradox network control file PDOXUSRS.NET. The active NET DIR parameter is stored in the Paradox section of the BDE configuration file and has precedence over any other NET DIR parameters that may be stored in older 16-bit configuration files, or in the System Init section of the current configuration file, or in the Registry. These other NET DIR entries will have no effect. To access a Paradox table on a network drive, the active NET DIR parameter in the Paradox section of the BDE configuration file must point to a network drive and folder in common to all users.

P7 Book: Programming Unleashed Topic:
Demo files included on CD with book.
Paradox & ObjectPAL Topic:
Resource Link of the Month: Corel WordPerfect X3 Pro Home Page

Paradox 11 with SP2 applied ships with WordPerfect Office X3 Professional Edition. There are two ways to get the current Paradox, buy the WPO Pro Edition (X2, X3, etc.) or buy a license directly from Corel.

System requirements

Windows® Vista (Home Basic, Home Premium, Ultimate, Business 32 bit and Business 64 bit Edition with latest SP and Critical Updates)*, Windows® XP (Home, Media or Professional Edition with latest SP and Critical Updates), Windows® 2000 (with latest Critical Updates) or Windows® 98 SE (with latest Critical Updates)
128 MB RAM (256 MB recommended)
466 MHZ (Pentium® III or equivalent processor recommended)
450 MB hard disk space for minimum installation
Super VGA, 16-bit color monitor with 800 x 600 or greater resolution
CD-ROM drive
Mouse or Tablet

*Paradox and the SDK (software development kit), included in the Professional Edition, will be updated for Windows® Vista at a later date.

Interactive Paradox: Using Data Topic:
Question: How do I import an Excel 2003, XP, or 2007 spreadsheet?

Answer:

Corel Paradox 9, 10, and 11+ can import Excel spreadsheets up through Excel 97 so you need to save the spreadsheet as an Excel 97 spreadsheet. Then you can import it in Paradox using either the interactive File | Import option or with ObjectPAL's importSpreadsheet procedure.

If you have trouble with then Excel 97 file format (and you may depending on the version of Excel you are using), try saving the file as an Excel 4 file format. The worst case scenario, is that you may have to save the file as a dBASE table file format (.DBF) which you can directly use in Paradox and even copy it to a Paradox table (.DB).

Paradox Tables Topic:
Tip of the Month

Lookup tables for Paradox table level 5 or lower are limited to 8 characters. If you use lookup tables in other directories, upgrade all tables involved to the Paradox table level 7. You can do this with Table Repair or by defining a level 7 feature (for example, a descending index).




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