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Delphi uses Tcomm component Spcomm for serial communicationAbsrtact: Using Delphi to develop industrial control system software becomes more and more developer's choice, and serial communication is one of the problems that must be solved in this process. Based on the analysis and comparison of several common serial communication methods, this paper emphatically discusses the method of using Spcomm control t

introduction Marco Cantu is a well-known Delphi expert. He has published a series of "proficient Delphi" books, delphi development manual and e-book proficient Pascal (this e-book is available for free online ). He teaches basic and advanced development skills in Delphi. You can get more information about him through

There are a number of tools for programming in Windows, such as VB,DELPHI,VC and so on. I don't want to discuss this childish question of "What's more specific about them." Anyone who has ever played a DOS program knows that The real core of many languages in DOS is to invoke the assembly interrupt function provided by the system. Under Windows, it became the API we used to talk about. While writing programs in Windows is often called API, language is

The obvious difference between Borland and other software vendors has been in its pragmatic approach-providing the most appropriate and competitive development tool for today's developers, while at the same time guiding them to understand the future of the new technology, and make it believe that their development investment will guarantee the future relevance , adaptable and scalable in an invincible position. This article from a Delphi developer pe

first, the basic knowledge of COM components introduction: 1, what is COM COM is a Microsoft set up a component of the specification, the purpose is to achieve the reuse of components, whether you are in C, DELPHI, VB what language to write, as long as the observance of this specification is COM components, can be invoked between each other. What is this specification, the simplest is to use the interface according to the rules, Microsoft has set a I

declaration: Type Int64 = -9223372036854775808..9223372036854775807; Description: Int64 is a signed integer that is 64-bit stored. This size is already fixed and will not change in future Delphi versions. Functions like IntToStr also support the Int64 type (implemented by overloading). When an integer constant exceeds the maximum value of an integer type, it is cast to the Int64 type. Note: There are no unsigned 64-bit integers in

downloaded on the www.Delphiuser.com website.First, let's talk about free third-party controls (with source code):㈠ interface Style class------------A good software should have an excellent operating interface, I think this should be indisputable. However, the use of C + + programming friends will certainly have such a sigh, make a beautiful and easy to get started interface is too tired (except BCB). But since Delphi was born, all this suddenly chan

After reading the Boulevard to Jane, I found that the book is always talking about a language, or a programming tool--delphi.I have seen some of the blog content in front of my friends may find that I have published a small program with Delphi, in fact, after that also using Delphi to do some programming, small to the calculator, large to the level measurement record software (tabular output and calculation

Source: Internet Weekly Report: Delphi garden. The price of $23 million seems to be a cheap sale. The price is only enough for a movie from Hollywood stars, and the cost of making a second-stream movie is not enough.When I read the news online, I suddenly found a message: Borland Software has sold the codegear development tool department for $23 million. I suddenly realized that Delphi and C ++ Builder are

Tutorial on full solution of Chinese Delphi instances DelphiTutorial Series of books(046)ChineseDelphiInstance full solution tutorial Organize netizens (state)Email:Shuaihj@163.com : PDF Prepared by Zhang Zhiqiang Published by: southern publishing house Publishing date: 2004-01 ISBN: 780660954 Package: Flat Opening: 16 Page count: 462 pages Printed: 1 time Introduction As an excellent object-oriented visual development tool,

Delphi object-oriented programming thoughts DelphiTutorial Series of books(013)《DelphiObject-Oriented Programming ideas Organize netizens (state)Email:Shuaihj@163.com : PDF Author: Liu Yi [Translator's introduction] Book Series name: Borland Core Technology series Press: Machinery Industry Press ISBN: 7111127722 Mounting time: 2003-10-10 Published on: February 1, September 2003 Start: 16 Page number: 476 Version: 1-1 Introduction This is

Delphi 6.02 preemptive research-bizsnap/soap/WebService 4-- Significance of patch 2 # Borland released the second patch for C ++ Builder 6 and Delphi 6. This is a very important patch for Delphi 6. It not only fixes some problems in Delphi 6, but also greatly enhances the functions of

// Replace the General stringVaRReg: tperlregex;BeginReg: = tperlregex. Create (Nil);Reg. Subject: = 'I love Delphi, But Delphi does not love me! ';Reg. RegEx: = 'delphi ';Reg. Replacement: = '◆ ';Reg. replaceall;Showmessage (Reg. Subject); // return: I love Delphi, but ◆ don't love me!Freeandnil (REG );End; // Case i

Borland company recently released its latest version of the Windows Development Tool Delphi 2005, the new software in the same development environment to join the Win32,. Net, Delphi and C # support, while integrating the Borland Application Lifecycle management tools. The new version of Delphi, code-named Diamondback, is designed to support Borland's all-encomp

Look forward to the N days, every day on the website of CodeGear, finally, this afternoon to see Delphi for PHP Trial version can be downloaded, so can't wait to download to my machine, ready for the first time trial. Download speed is slow, about 57K speed bar, download filename d4php_trial.exe, size is 30,165,616 bytes (28M), spents 8 minutes 29 seconds. BDN login to download, before downloading will be prompted to register the mailbox to send a t

Today it took one hours to write a small program, my Delphi PHP's first program. The function is to display a simple addition problem in the browser, the user can input the answer, the computer will tell you right or wrong, and then you can have another question. function is very simple, mainly in order to familiarize yourself with Delphi for PHP, when writing, check out PHP help, find this codegear PHP hel

The first step: writing the server application First in the Delphi IDE, select "file| new| Other ... ", and then select the SOAP Server application icon in the WebServices page. Then select the Web App Debugger executable in the new Soap Server Application dialog box. After clicking on the OK button, Delphi automatically generates a webmodule that contains three WebServices controls in this module. Then

of the existing visual development environments have encapsulated this process into the various classes, parts, and methods of the components. When we use them to write an application, we must consider what each object will do, decompose them into different message handlers, and correspond to different messages. Although there are a wide variety of controls (parts), it is very convenient to write programs. But these are some common objects and message handlers, and if we're going to write our

Reprint: In case of a blogMultithreading should be a basic skill for programmers, but the foundation is a bit difficult for me (at least yesterday).The beginning should be a voluminous text, but I still advocate to do it first, in the attempt to understand. Try this first.Procedure Tform1.button1click (sender:tobject); var i:integer;begin for i:= 0 to 500000 do begin Canvas.textout (Ten, IntToStr (i)); End;end;When the above program is running, our form is basically "dea

, so the current Delphi market of skin controls are tested one by one, including stability testing, memory leak testing, mapping effect testing, use efficiency, The five major items of the skin interface are compared in a horizontal way to give some references to friends who are preparing to use the skin. This choice of products are "famous" control package, why add the word "famous", this is reasonable, skin this thing directly affect the operation