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Zarko Gajic
Zarko's Delphi Programming Blog April 2008 Archive

By Zarko Gajic, About.com Guide to Delphi Programming

Metric Converter - Fancy Delphi Application Contest Entry #27

Tuesday April 29, 2008
in FDAC :: 1 Feet is how much Centimeters or Inches? Do you know that 1 pound is 16 ounces? You certainly know that 1 GB is 1073741824 bytes ... Read More

Take a Screen Shot of an Inactive Window - Using PrintWindow API from Delphi

Monday April 28, 2008
in Delphi TIPS :: Taking a screen shot of a window using Delphi code is rather easy. A screen shot (screen capture) is a copy of the screen's contents ... Read More

Using the SelectDirectory Delphi routine - to Select a Directory/Folder

Sunday April 27, 2008
in Delphi TIPS :: You can display a dialog to the user to allow directory/folder selection without using a TOpenDialog component. First, add FileCtrl unit to the uses clause of ... Read More

Simple HTML page scraping with Delphi

Friday April 25, 2008
in Delphi Web programming :: This article will show you the techniques needed to download an HTML page from the Internet, do some page scraping (using regular expressions for ... Read More

Bidirectional links, Callbacks and Linking Classes : Delphi OOP Chapter 25

Thursday April 24, 2008
in Delphi OOP Course :: Nearly all the communication between objects covered so far has been unidirectional, from an initiator to a recipient. This leaves the recipient with no possibility ... Read More

Windows Shut Down / Restart / Log Off - Fancy Delphi Application Contest Entry #26

Tuesday April 22, 2008
in FDAC :: Do you need to restart, log off or even shut down Windows frequently? How about 3 simple shortcuts to automate the proces? Implemented as a console mode ... Read More

Use Custom Check Box Images for a ListView - Delphi 's TListView Checkboxes are Ugly

Monday April 21, 2008
in Delphi TIPS :: When the ViewStyle property of a TListView Delphi control is set to vsReport and CheckBoxes is set to true, list view includes a check box next ... Read More

Disabling an Event Handler After its First Execution

Saturday April 19, 2008
in Delphi TIPS :: Have you ever wanted to keep an event from firing once it has executed? Simply set the event handler method to nil in the body of ... Read More

Creating Your Own Custom Delphi Components - Inside and Out

Friday April 18, 2008
Custom VCL dev. :: This tutorial will explain component writing to you, which should result in more code reuse. It will go over properties, events and methods, and will also ... Read More

Patterns for Varying Class Behavior - Delphi OOP Chapter 24

Thursday April 17, 2008
in OOP Course :: The structure of a class is fixed when the class is compiled. However, there are occasions when an operation may need to take on different characteristics at ... Read More

1337 Elite Slang Converter - Fancy Delphi Application Contest Entry #25

Tuesday April 15, 2008
in FDAC :: Elite or leet or 1337 is a geek talk - online slang. 1337 is geek's for "leet," which is an abbreviation of "elite." This term was derived ... Read More

Force Blank Value Display on TDateTimePicker

Sunday April 13, 2008
in Delphi Tips :: A little trick is to use the letters gg in the format property. This format pattern displays the period or era. This pattern is ignored if ... Read More

Force TDateTimePicker to Display Empty "Value"

Saturday April 12, 2008
in Delphi TIPS :: A little trick is to use the letters gg in the format property. This format pattern displays the period or era. This pattern is ignored if ... Read More

GDI Graphics In Delphi

Friday April 11, 2008
Delphi Graphics :: From simple lines to direct API calls: the ultimate tutorial to GDI graphics in Delphi. This tutorial will introduce you to some of the techniques in the ... Read More

The Facade Patterns - Delphi OOP Chapter 23

Thursday April 10, 2008
in OOP Course :: Chapter summary: Using delegation (in the form of composition or association) in implementing patterns; Using the Adapter pattern; Object and class Adapters; Using the Facade pattern; ... Read More

Task Manager Clone - Fancy Delphi Application Contest Entry #24

Tuesday April 8, 2008
in FDAC :: Task Manager Clone displays information about the performance of your computer and the programs and processes that are running on your computer. Use it to view process ... Read More

No Main Form Delphi Application

Monday April 7, 2008
in Delphi TIPS :: Every Delphi application must have a main form. The main form is the first form created in the body of the application. When the main form ... Read More

Top 10 Reporting Tools for Delphi

Friday April 4, 2008
in Delphi TIP Picks :: Easily create complex reports that are linked directly into your Delphi EXE. Most of the tools from the list provide all the means for you ... Read More

The Adapter Pattern - Delphi OOP Chapter 22

Thursday April 3, 2008
OOP Course :: If a single class delegates operations to more than one existing class, an effect similar to multiple inheritance is possible while avoiding some of the complications. Delegation ... Read More

Reversi (Othello) - Fancy Delphi Application Contest Entry #23

Tuesday April 1, 2008
in FDAC :: Reversi (Othello) is the a strategy board game which involves play by two parties on an eight-by-eight square grid with pieces that have two distinct sides. The game ... Read More
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