Published: Mon, 13 Mar 2017 12:01:35 +0000
2017-03-13T12:01:35ZContrary to most other Delphi data-aware controls, the DBGrid component has many nice features and is more powerful than you would have thought. The
2017-03-13T12:01:35ZGet 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.
2017-03-13T12:01:35ZHave you ever needed to open documents in a file listbox, just by double clicking on them, without opening the associated program first? Learn how.
2017-03-13T12:01:35ZLearn symbolic constant names and keyboard equivalents for the virtual key codes used by Windows. How to enhance the functionality of a TDBgrid component.
2017-03-13T12:01:35ZDelphi string handling routines explained: declarations, descriptions and examples.
2017-03-13T12:01:35ZThe differences between a Delphi component Owner and its Parent explained. Plus: when to use the Controls and Component properties of a Delphi component.
2017-03-13T12:01:35ZNeed to create, encrypt or manage PDF (Portable Document Format) files from Delphi? Using the tools and components in this listing you will get powerful control of PDF documents in your applications. PDF is a worldwide standard for electronic documents. It was originally developed by Adobe.
2017-03-13T12:01:35ZReading and writing to text (ascii) files using Delphi code. Find out how to read a line by line of a txt file and how to write some data back to the file.
2017-03-13T12:01:35ZEverything you ever wanted to know about DLLs and Delphi but didn't know where to look for answers (or were to afraid to ask)
2017-03-13T12:01:35ZDelphi's StringReplace function returns a string in which a specified substring has been replaced with another substring.
2017-03-13T12:01:35ZDelphi's ExtractStrings function fills a string list with substrings parsed from a delimited list.
2017-03-13T12:01:35ZGoing undercover with Delphi: hiding from the task list, disabling task-switch, removing from the TaskBar, disabling Windows shut down, ...
2017-03-13T12:01:35ZDelphi's QuotedStr function returns the quoted version of a string.
2017-03-13T12:01:35ZCreating a console mode application with Delphi; a text-mode program that runs without a graphical interface. Learn more about no GUI Delphi applications.
2017-03-13T12:01:35Zclass="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" >Delphi provided
2017-03-13T12:01:35ZTQPDF - Delphi wrapper for the QPDF.DLL. QPDF is capable of creating linearized (also known as web-optimized) files and encrypted files. It is also capable of converting PDF files with object streams (also known as compressed objects) to files with no compressed objects or to generate object streams from files that don't have them (or even those that already do).
2017-03-13T12:01:35ZDelphi's PosEx function returns an integer specifying the position of the first occurrence of one string within another, where the search starts at a specified position.
2017-03-13T12:01:35ZSend email messages with attachments using Indy and Delphi. Full source code to a simple
2017-03-13T12:01:35ZThe 101 article was an introduction to interfaces and implementing them. This time we'll explore more topics related to working with interfaces. What to do when 2 interfaces define the same named method and you need to implement both? How to have properties in interfaces?
2017-03-13T12:01:35Zclass="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" >Users accustomed
2017-03-13T12:01:35ZDelphi's BoolToStr functionrReturns a string from a boolean value.
2017-03-13T12:01:35Zclass="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" > Delphi's support
2017-03-13T12:01:35ZResources support the program but are not executable code. Learn how Delphi uses standard Windows-format resource files: icons, bitmaps and cursors.
2017-03-13T12:01:35ZAn introduction to pointer data type in Delphi. What are pointers, why, when and how to use them.
2017-03-13T12:01:35ZAn Introduction to COM Programming with Delphi. COM stands for Component Object Model. It allows you to create COM objects that are not specific to any language, and in some cases, even platforms.
2017-03-13T12:01:35ZThe concept of arrays in Delphi is simple: arrays allow us to refer to a series of variables by the same name and to use a number (an index) to tell them apart. Arrays have both upper and lower bounds, and the elements of the array are contiguous within those bounds.
2017-03-13T12:01:35ZExploring design patterns in real programming, focusing on implementation issues in Delphi.
2017-03-13T12:01:35ZCreating a new Delphi (VCL, FMX) application would result in creating a single application (program) where all the units and forms used in the program would be compiled/linked into a singe executable file. If you would like to have the same code base in one program but also have an option to build two (or more) different applications - you should be looking at Delphi's conditional compilation.
2017-03-13T12:01:35ZHere's how to store TTreeView component items to XML (preserving the Text and other properties of a tree node) and how to populate a TreeView from an XML file.
2017-03-13T12:01:35ZAn overview of creating and using 'Borland Package Libraries' and how they compare with 'Dynamic Link Libraries' in creating smaller Delphi applications.
2017-03-13T12:01:35ZDelphi's Power function returns a real number raised any power.
2017-03-13T12:01:35ZChapter one of the free Delphi database online course. Delphi as the database programming tool, Data Access with Delphi...just a few words, Building a new MS Access database.
2017-03-13T12:01:35ZDelphi's Pos function returns an integer specifying the position of the first occurrence of one string within another.
2017-03-13T12:01:35ZCreate visually more attractive user interfaces for editing lookup fields inside a DBGrid - place a DBLookupComboBox into a cell of a DBGrid.
2017-03-13T12:01:35ZDelphi for Visual Basic developers. It seems many VB developers are turning to Delphi these days. This article provides specific information and resources to help developers migrate their applications (knowledge and skills) from VB to Delphi.
2017-03-13T12:01:35ZIf you allow a user to customize DBGrid's appearance at run time (Columns width and position), when the form is closed and reopened, all the user changes are lost. For a better user experience it would be ideal if your application could somehow store (and load when needed) all the changes the user has made to the Grid appearance. Here's how.
2017-03-13T12:01:35ZCode Completion in Delphi. A Beginner's Guide to Delphi Programming: Chapter 13. It's time to learn how to let Delphi help you code faster: start using code templates, code insight, code completion, shortcut keys, ...
2017-03-13T12:01:35ZThis document describes what Windows hooks are and how to use them within a Delphi application.
2017-03-13T12:01:35ZWorking with GIF images in Delphi. Need to display an animated GIF image in a Delphi application? Even though Delphi does not natively support GIF image files formats (like BMP or JPEG) there are a few great (free source) components available on the Net, which add the ability to display and manipulate GIF images at run as well as at design time to any Delphi application.
2017-03-13T12:01:35ZCreating XML files from Paradox (or any DB) tables using Delphi. See how to export the data from a table to a XML file and how to import that data back to the table.
2017-03-13T12:01:35ZDelphi's Copy function returns a substring of a string or a segment of a dynamic array.
2017-03-13T12:01:35ZThe TTreeView Delphi component displays a hierarchical list of items - tree nodes. A node is presented by node text and an optional image. In real-world applications your tree nodes would need to carry more info: some more properties or even an entire custom object. How to?
2017-03-13T12:01:35ZUnlike regular .LNK shortcuts (that point to a document or an application), Internet Shortcuts point to an URL (web document). Here's how to create an .URL file, Internet Shortcut, using Delphi.
2017-03-13T12:01:35ZDelphi's LeftStr function returns a string containing a specified number of characters from the left side of a string.
2017-03-13T12:01:35ZLearn about records, Delphi's data structure that can mix any of Delphi's built in types including any types you have created.
2017-03-13T12:01:35ZEverything you need to know about Delphi and the Extensible Markup Language. Find out about creating and parsing XML documents, look for parser components and more.
2017-03-13T12:01:35ZThe Win 3.1 Delphi components palette group includes several components that enable us to build our own custom File Open or File Save dialog box. The components are TFileListBox, TDirectoryListBox, TDriveComboBox, and TFilterComboBox. Let's see how we can build a simple File Navigating dialog box with these components and just a few lines of code.
2017-03-13T12:01:35ZLearn how to take advantage of the TADOQuery component to boost your ADO-Delphi productivity.
2017-03-13T12:01:35ZA Beginner's Guide to Delphi Programming. Free online programming tutorial / course for beginner developers. Focus on Borland Delphi.
2017-03-13T12:01:35ZA Dynamic Link library, or DLL, is a collection of routines (small programs) that can be called by applications and by other DLLs. Using Delphi, we can write and use our own DLLs, and we can call functions in DLLs developed with other systems / by other developers. Find out how.
2017-03-13T12:01:35ZMultiple row selection in Delphi DBGrid - providing the ability to select multiple records within the grid. Learn this step of Delphi Database Programming.
2017-03-13T12:01:35ZA quick journey through the main parts and tools of the Delphi integrated development environment.
2017-03-13T12:01:35ZWith the release of .NET Microsoft forced developers to think more of Web development as the number one job description in the future. Let's see what are the options for Delphi developers. Here's a list of the selected tools to help you speed up your Web projects. From VCL components (*http enabled*) to true RAD tools the list offers the best choices.
2017-03-13T12:01:35ZAdding components to a DBGrid. Here's how to place a check box into a DBGrid. Create visually attractive user interfaces for editing boolean fields.
2017-03-13T12:01:35ZMDI, as a preferred user interface for applications that allow multiple documents to be contained within a single window, is being abandoned by Microsoft during the last few years. Microsoft started to promote a different user interface for such applications - TDI: Tabbed User Interface. Here's how to add TDI on top of MDI for your Delphi application.
2017-03-13T12:01:35ZLearn how to enable dragging and dropping from and to a TDBGrid component.
2017-03-13T12:01:35ZThe SaveToFile method of the TStringList class adds an empty line to the file. Here's how to remove that extra line feed in in your Delphi applications you need one line of text to really be one line of text in the saved document.
2017-03-13T12:01:35ZAn overview of VCL components allowing you to access a MySQL database from Delphi using standard data controls without using BDE/ADO/ODBC. Plus a few MYSQL related tools.
2017-03-13T12:01:35ZLearning Delphi online - where to search for help, tutorials and sample code
2017-03-13T12:01:35ZMulti-threading in Delphi lets you create applications that include several simultaneous paths of execution. When several threads are running in the application a question arises: how to update your GUI (user interface) as a result of a thread execution. The question lies in the TThread class Synchronize method.
2017-03-13T12:01:35ZHow to sort records in Delphi DbGrid by clicking on the column title. Plus: how to change the appearance of the selected column title with sort order.
2017-03-13T12:01:35ZIntercepting keyboard input for controls that cannot receive the input focus. Working with keyboard hooks in Delphi.
2017-03-13T12:01:35ZHere's how to save a web page displayed inside a WebBrowser (TWebBrowser component) as a raw HTML file or into a single (MHT) file (MHTML format: web archive - single file) programmatically using Delphi.
2017-03-13T12:01:35ZSome basic facts and code samples on using Delphi and the Windows Registry database.
2017-03-13T12:01:35ZLooking for a single-file, single-user database for your next Delphi application? Need to store some application specific data but you do not want to user the Registry / INI / or something else?
2017-03-13T12:01:35ZA Beginner's Guide to ASP.NET Programming for Delphi developers: Chapter 18. Find out what events (and in what order) are generated when ASP.NET receives a request for a Web Form. Learn about the ViewState - a technique ASP.NET uses to maintain page state changes across postbacks.
2017-03-13T12:01:35ZCommenting Delphi code. Learn the art of helping yourself, when it comes to code maintenance. The purpose of adding comments to Delphi code is to provide more program readability using understandable description of what your code is doing.
2017-03-13T12:01:35Zclass="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" >A feature of the
2017-03-13T12:01:35ZWhen you start programming in Delphi you might get errors like
2017-03-13T12:01:35ZHere's how to add check boxes and radio buttons to a TTreeView Delphi component. Give your applications a more professional and smoother look.
2017-03-13T12:01:35ZDelphi's CompareDate function compares two TDateTime values (returns 'less', 'equal' or 'greater'). Ignores the Time part if both values 'fall' on the same day.
2017-03-13T12:01:35ZLearn about Date/Time Delphi functions and procedures in RTL.
2017-03-13T12:01:35ZOne of the keys to traditional Windows programming is handling the messages sent by Windows to applications. Handling Windows Messages the Delphi way!
2017-03-13T12:01:35ZA free network (Internet / intranet) traffic (download / upload) monitor. Network traffic monitor allows you to quickly and easily examine the network usage of the local computer. Full Delphi source code included.
2017-03-13T12:01:35ZUnderstanding and managing string data types in Delphi's Object Pascal. Learn about differences between Short, Long, Wide and null-terminated strings.
2017-03-13T12:01:35ZDelphi's RightStr function returns a string containing a specified number of characters from the right side of a string.
2017-03-13T12:01:35ZThe TSplitter Delphi control does a nice job of allowing the user to resize user elements like panels on a form to make the the user interface more flexible. A nice to have for a splitter would be to have a grab bar - and here's how to easily paint one on all your splitter - without having to redesign your user interface.
2017-03-13T12:01:35ZDelphi organizes applications into what is called projects. A project is made up of the visual interface along with the code that activates the interface. Each project can have multiple forms, allowing us to build applications that have multiple windows. Find out about Delphi's Project File in this article!
2017-03-13T12:01:35ZUseful tips to make your Delphi programs run faster.
2017-03-13T12:01:35ZThis chapter explores the Factory patterns, which, instead of changing an object’s behaviour, provide ways of creating different objects to suit run time requirements.
2017-03-13T12:01:35ZLearn about placing Delphi applications in the System Tray in easy steps. The perfect place form programs can run for a long time without user interaction.
2017-03-13T12:01:35ZAccess violations, invalid page faults, general protection faults; the name changes, but the nature of the problem is always the same. Find the solution to your Delphi AVs.
2017-03-13T12:01:35ZCreate a Delphi form from a string. You do not need to know the exact class type of a form object. By providing a variable, a form can be created from its name.
2017-03-13T12:01:35ZDelphi makes it easy to program dragging and dropping into our applications. You can even drag and drop from one form to another.
2017-03-13T12:01:35ZThe .INI files have a text-based file format for representing application configuration data in a format which is easily editable by humans and readable by a simple automatic parser. Learn how to use Delphi's TIniFile to read and write INI configuration files.
2017-03-13T12:01:35ZThis article will show you how to use the TClipboard object to implement cut-copy-paste features in your Delphi application.
2017-03-13T12:01:35ZIf you are up to creating a rock solid (OOP driven) Delphi application in a way that your code is maintainable, reusable, and flexible the OOP nature of Delphi will help you drive the first 70% of your route. Defining interfaces and implementing them will help with the remaining 30%.
2017-03-13T12:01:35ZAbout.com's Delphi Programming site (http://delphi.about.com) proudly presents: free online programming tutorials for (beginner) Delphi developers!
2017-03-13T12:01:35ZA guide to developing Delphi programs in Windows API (without the use of the VCL). Free online programming course for intermediate/advanced Delphi developers. Focus on raw Windows API programming.
2017-03-13T12:01:35ZDelphi For Beginners: Interface, Implementation, Initialization, Finalization, Uses and other funny words.
2017-03-13T12:01:35ZLooking for a free source multi-purpose Delphi component collection to add more power to your applications? Look no more, here's a list of the best Delphi component (free with source) sets on the Net!
2017-03-13T12:01:35ZLearn how to track the mouse activity even when your application is not active, sits in the Tray or does not have any UI at all. By installing a system wide (or global) mouse hook you can track what the user is doing with the mouse and act accordingly.
2017-03-13T12:01:35ZFind out how you can include the manifest into a Delphi project to allow your application to share the same look and feel of Windows XP.
2017-03-13T12:01:35ZHave you ever found yourself writing the same code over and over to perform some common task within event handlers? Yes? It's time for you to learn about programs within a program. Let's call those mini programs subroutines.
2017-03-13T12:01:35Zclass="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" >Delphi Programming
2017-03-13T12:01:35ZLearn how to locate a TreeView node given by node text using Delphi. For those developing Delphi applications using the TreeView component. .
2017-03-13T12:01:35ZWhispering about reverse engineering Delphi applications: 'I have a Delphi program's .exe, can I decompile it and get the source?'. Page 3.
2017-03-13T12:01:35ZA Beginner's Guide to ASP.NET Programming for Delphi developers: Chapter 22. Learn how to programmatically implement the ITemplate interface to dynamically create the ItemTemplate content for a DataList Web Server control.
2017-03-13T12:01:35ZA selected collection of open source, free, and commercial Delphi components to help you add ZIP / UNZIP functionality to your application. Compressing and deflating files and directories in well-known formats like ZIP, RAR, TAR, GZIP, CAB will not longer be a missing piece in your Delphi projects!
2017-03-13T12:01:35ZLearn how to read and manipulate XML documents with Delphi using the TXMLDocument component. Let's see how to extract the most current