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January 2013

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Signing Off. So Long, and Thanks for All The Good Times!

About Delphi Programming – Dear delphi.about.com web site visitors, readers and friends who followed my work as the Delphi Programming Guide for the About.com network, the time has come for me to move on to new endeavours. After 15 great years I'm leaving About.com. I've started working as the Delphi Programming Guide in ...
Details Favorite? Off-Topic? 2013-01-03 05:03

December 2012

3
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Delphi Programming Almanacs: 1998. - 2012. Something for Every Delphi Developer: Beginner or a Guru!

About Delphi Programming – in Delphi Almanacs :: According to Wikipedia, an almanac is an annual publication containing tabular information in a particular field or fields often arranged according to the calendar. A Delphi Programming Almanac would then be an annual reference e-book (?) composed of articles, tutorials, tips ...
Details Favorite? Off-Topic? 2012-12-27 02:00
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Reverse Engineering (Decompiling) Delphi Applications

About Delphi Programming – in Advanced Delphi :: Simply speaking, decompilation is the inverse of compilation: translating an executable file into a higher level language. Suppose you lose your Delphi project's source and you only have the executable file: reverse engineering (decompilation) is useful if the original ...
Details Favorite? Off-Topic? 2012-12-24 02:00
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Speed and Size: Top 10 Delphi Programming Tricks

About Delphi Programming – LANGUAGE TIPS :: In many case the Delphi compiler will take care of the optimization. But that's just limited to aligning the code for pipelines, and some other small tweaks to the code. There is still much to be gained by taking into account how a computer works, and adapting your algorithm to ...
Details Favorite? Off-Topic? 2012-12-21 03:00
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Listening to the Clipboard: Delphi Clipboard Spy with Custom Clipboard Formats

About Delphi Programming – in Advanced Delphi :: Clipboard stores information in multiple formats so we can transfer data between applications that use different formats. When reading information from the clipboard with Delphi's TClipboard class, we are limited to standard clipboard formats: text, pictures and metafiles. ...
Details Favorite? Off-Topic? 2012-12-17 03:00
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Custom Drawing a TComboBox: Color Pick List, Font Pick List

About Delphi Programming – in using VCL :: As with menus (menu items), an application can create an owner-drawn combo box to take responsibility for painting list items. An owner-drawn combo box can list/show information other than text strings - usually some graphical elements. To demonstrate owner-drawing with combo ...
Details Favorite? Off-Topic? 2012-12-13 03:00
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Have a Delphi Function Return Multiple Results / Values

About Delphi Programming – in For Beginners :: A return value from a function is defined by the return type. I guess that in most cases you would write a function to return a single value that would be an integer, string, boolean or some other simple type, also return types could be an array, a string list, an instance of a ...
Details Favorite? Off-Topic? 2012-12-11 10:37
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Intercepting Keyboard Input with Delphi - Implementing a Keyboard Hook

About Delphi Programming – in Advanced Delphi :: Consider for a moment creation of some fast arcade game. All the graphics is displayed, let's say, in a TPainBox. TPaintBox is unable to receive the input focus - no events are fired when the user presses a key; we cannot intercept cursor keys to move our battle ship. Delphi ...
Details Favorite? Off-Topic? 2012-12-10 03:00
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Understanding Owner Drawing in Delphi

About Delphi Programming – in Advanced Delphi :: I guess we all like the idea of graphics displayed in the "Start" menu of Windows XX. Have you ever wondered is it possible to do custom control drawing with Delphi? Here comes Owner Drawing - an excellent way to improve the look and feel of your Delphi application by ...
Details Favorite? Off-Topic? 2012-12-07 03:00
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Understanding and Processing Keyboard events in Delphi

About Delphi Programming – in Delphi Language :: Get familiar with the OnKeyDown, OnKeyUp, and onKeyPress Delphi event procedures to respond to various key actions or handle and process ASCII characters along with other special purpose keys. Read the full article to get a better Understanding and Processing Keyboard events ...
Details Favorite? Off-Topic? 2012-12-04 03:00
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Understanding and Using Windows Callback Functions in Delphi

About Delphi Programming – in Advanced Delphi :: To call most API/DLL functions from Delphi, you write a function that calls the API function, and you're done. In some cases, however, system needs to call an application-defined function in response to events generated by an API call. Simply put, a callback function is a ...
Details Favorite? Off-Topic? 2012-12-03 03:05

November 2012

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Extending Delphi Sets (And Other Simple Types) With Functions and Procedures

About Delphi Programming – in Delphi Language :: The Understanding Delphi Class (and Record) Helpers introduces a feature of the Delphi language allowing you to extend the definition of a class or a record type by adding functions and procedures (methods) to existing classes and records without inheritance. In XE3 Delphi ...
Details Favorite? Off-Topic? 2012-11-27 07:50
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Create Your Own Database Using Delphi's "File Of" Typed Files

About Delphi Programming Рin FILE I/O :: type TMember = record   Name : string; end; var F : file of TMember; In my Delphi program I need a way of storing some information to the disk. I do not want to work with text files - there should be no easy way to see/alter the information in a file. No need for a "real" database ...
Details Favorite? Off-Topic? 2012-11-26 03:00
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Virtual TreeView - About & How To Install (Open Source Delphi Treeview Component)

About Delphi Programming – in Virtual TreeView :: While the TTreeView control (Win32 palette) is powerful enough for most of the tasks if your application is based on displaying hierarchical data, like folders and files, XML structure, any anything alike, you would soon realize that you need more power from a tree view like ...
Details Favorite? Off-Topic? 2012-11-23 06:19
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Drag A Delphi Form Without The Caption Bar

About Delphi Programming – Advanced Forms :: No title bar! How can we drag such a window? For example, consider the case of a Windows application that doesn't have a title bar, how can we move such a form? In fact, it's possible to create windows with a nonstandard title bar and even non rectangular forms. In this case, how ...
Details Favorite? Off-Topic? 2012-11-19 03:00
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