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Prestwood IT Newsletter Oct 2008 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
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  October 2008 - Delphi Edition (762 of 4,803 subscribers receive this group's content.) Year 10 Issue 10  
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Expert guidance from working professionals!
Mike Prestwood
PrestwoodBoards topic:
Spend Your Points!
It's time to spend your member points!
Software topic (classic post):
10 FREE Must-Have Net Admin Apps
by Mike Prestwood

If you maintain more than a few computers, here are 10 applications you should have in your toolbox of software.


Foreign Worker Visas: H-1B, L-1 topic (classic post):
Will Sep 29 'Black Monday' stem the call for more H-1b programmers?
by Kim Berry
On Sep 29 stocks overall dropped by 10%. Some, like Apple, dropped by close to 20%. ComputerWorld asked how the current financial crisis might sway Congress on the H-1b issue.

Delphi for Win32 topic (classic post):
Delphi 2009 Ships!
Embarcadero Technologies unveils Delphi 2009! The next generation of the popular CodeGear rapid application development (RAD) tools for Windows native code development.





 Delphi Group Top 
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Language Basics topic (classic post):
Simple Habits Save Lots of Pain
by Wes Peterson
We developers sometimes get "on a roll." We know exactly what we need to do, and the code just flies off our fingertips. Later, though, we find ourselves in trouble...

Using Data topic (classic post):
Developing Web Servers with Delphi
by Kim Berry
This article by Kim Berry was first published in the July 2001 Prestwood eMagazine.

 Monthly Delphi Lesson
Using Data Topic:
Code Snippet of the Month

Use SetWindowRgn API call to make a round form. The SetWindowRgn function sets the window region of a window. The window region determines the area within the window where the operating system permits drawing. The operating system does not display any portion of a window that lies outside of the window region.

Simply use this function in the FormCreate event:

procedure TForm.FormCreate(Sender: TObject);

var
R1: HRGN;
R2: HRGN;

begin
R1 := CreateEllipticRgn(1, -1, Width - 1, Height);
R2 := CreateEllipticRgn(50, 50, Width - 50, Height - 50);
  CombineRgn(R2, R1, R2, RGN_XOR);

SetWindowRgn(Handle, R2, True);
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.



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