CODE 39 is the barcode developed by Intermec Corporation in 1975. Up to 43 characters including numbers, letters and some symbols can be included in the barcode: 0123456789 ABCDEFG HIJKLMNOP QRSTUVWXYZ-.$/+%. Since letters can be handled, CODE 39 is indispensable in the industrial fields and used in...
ShapeFile, also known as Shape is a figure or a set of complex shape figures (probably, unrelated). A Shape field can be one of the following types of geometry: point, polyline or polygon. It is also notable that together with a *.shp file, *.dbf file is formed and it contains the header informatio...
BMP, JPEG, TIFF, GIF – there is a variety of raster image formats. 1. BMP First of all, you should know that since BMP is an old image format it is not so popular among Internet users, only the bitmap images are saved in this format which doesn’t support the vector ones. The size of ....
The SVG file is a two-dimensional vector image based on documents in XML format. The SVG format is used not only for the description of two-dimensional vector graphics, but also for mixed vector-raster images. Let's list the main advantages of SVG format: First of all, as previously mentioned ...
The ODT file extension is used for Open Document text files, which are usually created using the OpenOffice or LibreOffice word processor apps. This document format is based on the XML markup language and therefore easy to convert. To understand what kind of format it is, it’s enough to see t...
It is often necessary to combine several documents into one (for example, PDF). It could be several chapters of documentation, catalog directories etc. Strictly speaking, this sometimes needs to be done not only for PDF, it’s just that this file format itself does not imply editing and “...
Summary of ODS and ODF ODS is an open format for spreadsheets made in accordance with the OpenDocument Format (ODF) standard. This format is distributed free of charge and uses the standards of the International Organization for Standardization. The standard was developed by OASIS technical committ...
“How to save in the HTML file format from Delphi?”, “how to create an HTML 5 file from Delphi?”, “how to create the HTML 5 file from Lazarus?” – these questions often arise among the developers. The HTML document is written in Hypertext Markup Language (HTM...
The Delphi programming language, or Turbo Pascal, has become a starting point for many developers. Thanks to the simple and clear syntax and the ability to write in a procedural style, it turned out to be very easy to learn. Many would compare it with Visual Basic, but at the peak of its popularity ...
Applications built in Delphi are less common than, for example, those built in C #. These programming languages are from different times. However, even nowadays Delphi and VCL can complete some of the modern tasks. There are many free and commercial libraries that can modernize even old applications...
As for Delphi applications, we understand that we are talking about applications implemented in VCL (Visual Component Library) for the Windows operating system. The popularity of Delphi VCL slightly faded with the advent of the C and .Net platform but there are lots of Delphi developers all around t...
Lately many countries have been digitizing payment processes. In other words, they convert existing payments to digital format. The most common way to automate payments is to use QR codes that are easily read by smartphones. The ability to encode a sufficiently large amount of information, high dama...
The TXT file stores text documents with information organized in the form of lines. In modern systems, strings are separated by line separators; in the past, storing strings in the form of records of constant or variable length was used. Sometimes the end of a text file (especially if the file size ...
Microsoft PowerPoint is a program for preparing and viewing presentations. It is a part of Microsoft Office and is available in editions for Microsoft Windows and macOS operating systems, as well as for Android and iOS mobile platforms.The program saves new presentations in * .pptx, * .ppt, * .ppsx ...
DOCX is an archive file that can be unpacked by a third-party program. This format is an upgraded version of the well-known DOC extension. A significant difference is a low file weight while maintaining all the original image parameters. If .doc is a binary text file, .docx contains XML files and ad...
CSV files (comma-separated values) are special types of files that you can create, read and edit in Excel. This format is textual and designed to provide tabular data. In CSV documents the data fields are separated by commas instead of columns (commas in English version or semicolons in Russian vers...
A frequent question is how to send a document from a Delphi application to RTF. It is a popular format and if you don’t have Microsoft Word installed on your computer you can use WordPad to open the file. This format is supported by Mac OS X’s default editor TextEdit. Most text editors s...
A developer has a huge choice of options when the task is to export to Excel from Delphi or Lazarus – it was partially described in the article “How to export a report to XLS Biff8 from Delphi” and there I also briefly explained why it is a bad choice. And what is a good choice, th...
Probably many have encountered the problem of using a CSV file as a DataSet in Delphi. Let's have a look at one of the solutions to this problem. We will connect the CSV file via TADOQuery and build a report from this data in FastReport VCL 6. Create a project and add the following components. ...
Quite often, you need to get a PDF document from a Pascal application - either Delphi or Lazarus. Usually it is recommended to use specialized solutions, PDF converters (such as itext, Synopse PDF Engine, PowerPDF, HotPDF, PDF Creator Pilot, PDFtoolkit VCL, Debenu Quick PDF Library etc.). In this ar...