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In other words, this is where you decide whether to link third-party components statically into the EXE, or dynamically by loading BPLs at run-time.If the packages don't change often, it might be a good idea to use dynamic linking, so that you only need to distribute the EXE for updates.

A DPC file is created through Tools A typical Delphi GUI program is a set of units (*.

PAS) which contain source code, and are listed in a project (.

The important point is freeing the object from memory, or your application will leak memory.

There are three ways to handle this: Declare a variable, call the class' Create() method, and end with Free(), preferably in a try/finally structure: A second way is to use the With structure, and set the instance's owner as a form, so that, even if you forgot to call Free, Delphi will free the object from memory when it kills the parent form (Actually, you should NOT call Free, and let the owner free the instance from memory): Note that the time to dynamically create components with owners is much slower than that to create components without owners. Here's how to read each line of a tab-delimited text file, and save this into an SQLite database: At design-time, the best way to add radio buttons to a form is by first adding a radiogroup object, and modify its Items property to add radio buttons.

The Delphi language was formerly known as Object Pascal, and is an object-oriented version of the venerable Pascal language, combined by Borland with a Visual Basic-like RAD tool that lets you write fast GUI applications with no run-time, a very rich set of components (VCLs) that can be statically compiled into the EXE, and an encapsulation of most of the Windows API for easier access to the underlying OS. For more infos, read Delphi history from Pascal to Diamondback (Delphi 2005) by Zarko Gajic. FWIW, the main extras offered by the Enterprise version of Delphi 7 are Intra Web from ATo Zed (Framework component set for building web apps in a RAD manner), Rave Visual Designer (Visual reporting tool), Biz Snap (to create web services,) and Model Maker (UML stuff.) If you'd rather use the familiar TAB button to indent a whole block, install Two Desk's Castalia add-in to the IDE, or the free Cn Wizards (a.k.a. If you are running Delphi Pro and above, check out GExperts or Cn Wizards.

Net framework were designed by the same person, Anders Hejlsberg. In October 2006, Borland relaunched its Turbo brand, and offers two versions: Explorer, which are free but doesn't allow installing third-party components, and Professional, which aren't. Borland Developer Studio) with just the Delphi for Windows32 personality.That's the reason why some components are distributed as source code that you must compile yourself into a package before adding it to the IDE.The alternative for commercial components is to generate multiple versions of the package, one for each version of the IDE that they wish to support.Dynamic arrays are automatically released when their reference-count drops to zero." "If X and Y are variables of the same dynamic-array type, X := Y points X to the same array as Y.Unlike strings and static arrays, COPY-ON-WRITE is not employed for dynamic arrays, so they are not automatically copied before they are written to.On the other hand, dynamic run-time packages contain all the routines, even those that your EXE doesn't use, while, when using statically-linked packages, the IDE will only include stuff that your EXE actually use.

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