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Prestwood IT Newsletter Apr 2012 Issue - Delphi 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 Delphi group, you'll receive the following content below mixed in with the other groups you elect to include.

Prestwood eMag
Our monthly opt-in coupons+newsletter.
portal.prestwood.com
  April 2012 - Delphi Edition (762 of 4,803 subscribers receive this group's content.) Year 14 Issue 4  
Your full service technology partner!


Expert guidance from working professionals!
Company Info topic:
Prestwood IT Social Networking Strategy
by Mike Prestwood

Social networking is a bit confusing! Emailing and calling are still the standards. Is faxing still ok? What about Facebook? Do I friend someone or become a fan of their fan page? Wait, what happened to fan pages? Are they now Facebook pages? What about Facebook groups? What about LinkedIn, YouTube, Twitter, MySpace, and others?

The following articles are posted to the PrestwoodBoards knowledge base:

The Prestwood Strategy: Although we still prefer phone calls and email, we do use social media to reach out. Our primary form of social networking is not with our clients, but with fellow IT professionals at PrestwoodBoards.com. Use the link above to learn more including how to interact with Prestwood IT, our other websites and groups, and our staff including Mike Prestwood.

For more information see...


IT Water-Cooler for Power-Users topic:
Windows GREP - Great Tool
by Wes Peterson

You know (or think) the file is out there.  You have a pretty good idea about one or two things that are (or ought) to be in it.  Find it fast with Windows GREP.






 Delphi Group Top 
Visit Group | My Group Settings
Language Details topic (classic post):
Using the StatusBar Component
by Mike Prestwood
The StatusBar component allows you to write text to the status bar. This is one of the most common ways to display information to a user without stopping their work.

Delphi for Win32 topic (classic post):
Displaying graphic images in DBGrid components
by Joshua Delahunty

An example of work I did to display a graphic (+ text) in a single column of a DBGrid based on two tables in a Delphi 2006 Application (not limited to later versions of Delphi)


 Monthly Delphi Lesson
OOP Topic:
Code Snippet of the Month

Declare your class in the Interface section. Then implement the class in the Implementation section.

//Interface section:
TCyborg = class(TObject)

public
procedure IntroduceYourself;
end;
 
//Implementation section;
procedure TCyborg.IntroduceYourself;

begin
ShowMessage('Hi, I do not have a name yet.');
end;
 
//Some event like a button click:
var

T1: TCyborg;
begin
T1 := T1.Create;
T1.IntroduceYourself;
  FreeAndNil(T1);      //Be sure to clean up!

end;
Delphi for Win32 Topic:
Resource Link of the Month: Delphi for Win32 Roadmap

Official Delphi and C++Builder Roadmap from Codegear.

OOP Topic:
Question: What is the difference between private and strict private?

Answer:

Private visibility means members are invisible outside of the unit. In OO terms, this is how Object Pascal implements friendly classes (visibility to the private members of another class). To implement true private members in Delphi 1-7, put each class in a separate unit (most developers didn't bother).

Strict Private visibility means that private members within a class are visible ONLY within the class declared. In OO terms, this is true private visibility.

Language Details Topic:
Tip of the Month

Although Object Pascal doesn't have a native associative array, many developers just use a TStringList. Others have implemented a true associative array in Object Pascal. Search the Internet for TStringHash and THashedStringList classes for examples.



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