Delphi is a form of Object Pascal that is most commonly known due to Borland Delphi that was popular in the 1990's.

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Records defining a partial memory layout

I'm working on a solution that should work in C++-Builder and Delphi, that's why I use Object Pascal syntax, but I'm not very familiar with it. I try to access a file mapping with a size that is not ...
5
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1answer
273 views

Can I use dynamic packages in Delphi if I plan to build my application for cross platform usage?

Now I'm thinking about the architecture of my program. I plan to provide access not only for Desktop usage, but for mobile platforms as well. I want to create a bpl package as separate file. That is ...
2
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4answers
750 views

How to sell an application? Licensing problems

I`ve built a simple but yet effective delphi-7 application that solves sudoku puzzles, and a keygen that produces a unique serial key for each PC. My purpose is not to make money, I want to understand ...
5
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2answers
702 views

Scripting custom drawing in Delphi application with IF/THEN/ELSE statements?

I'm building a Delphi application which displays a blueprint of a building, including doors, windows, wiring, lighting, outlets, switches, etc. I have implemented a very lightweight script of my own ...
4
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1answer
568 views

Multi-platform design with Delphi, Java, MySQL and CouchDB [closed]

What are the most obvious drawbacks to this idea for an enterprise(ish) model using the following technologies. Browser based and native developed GUI using Delphi to connect to Datasnap server (...
2
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2answers
560 views

Moving old desktop application to a robust platform [closed]

Several years ago I wrote a desktop application, a small accounting system, in Delphi 7, that is in user in a medium-sized company. The code belongs to me. I ported another Accounting system that I ...
4
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3answers
953 views

Mobile applications in Delphi [closed]

Many of us know that Delphi executables are little bit gigantic, but again it is acceptable as nowadays 1.5 mb is not a big issue in PC. But what about mobile devices? Currently Firemonkey supports ...
-2
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1answer
91 views

Error recovering emails in Delphi (POP3) [closed]

I'm new to programming with Delphi. I have the latest version. I'm trying to display my emails using POP3 but I have a problem. At one point I was wrong and did a loop with POP3.Retrieve() method ...
5
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2answers
929 views

How to make a legacy system time-zone sensitive?

I need to implement time zones in a very large and old Delphi system, where there's a central SQL Server database and possibly hundreds of client installations around the world in different time zones....
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5answers
9k views

What is needed to deploy an application that uses Microsofts new LocalDB?

I'd like to know what microsoft components need to be installed for this new LocalDB to run on a users machine. Now in CTP3: SQL Server Express LocalDB LocalDB is a new lightweight deployment ...
2
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0answers
607 views

Why does the .NET framework have no concept of classes as first-class types?

It's well known to those familiar with the history that C# and the .NET framework started out as essentially "Delphi rewritten to feel like Java," architected by the chief developer behind Delphi, ...
8
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1answer
4k views

Best practices for implementing MVVM and MVC in delphi Pascal

I'm a Delphi pascal programmer, I use the latest Embarcadero delphi XE, and I would like to take advantage of design patterns such as Model view controller and model view view-model. However, there ...
8
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4answers
747 views

Is integer used too much as a data type?

Do most application developers use signed integers in places where they really mean to use unsigned integers? I do it all the time, so do my co-workers. I haven't seen a lot of other extensive ...
0
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2answers
453 views

Delphi 7 using RAM for database

I have an existing database app written in D7 with apollo databases. The client has given me a fast desktop with 24gb ram Can I somehow load the database files into ram to speed up processing? With ...
1
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1answer
88 views

Is it a bad idea to have many protected variables, events and procedures in a unit?

I am writing a full fledged p2p networking library on top of Indy's UDP server with an intention of publishing it online. The design I have implemented has a P2P manager ( TIdUDPServer ) which can act ...
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2answers
344 views

Are all race conditions worth fixing? [closed]

I just wrote the following piece of code (in delphi): procedure Update(Value: Integer); begin // If the last update was yesterday, replace yesterday value if CompareDate(FLastUpdate,Now) <> ...
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2answers
210 views

Locking techniques

Delphi RAD libraries implement many thread friendly objects in a way which forces one to declare another object for storing the reference returned by that object's locking method. The object thus ...
0
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1answer
57 views

Difference between TSimpleRWSync's BeginWrite and BeginRead methods?

I have recently switched to TSimpleRWSync from TRTLCriticalSection. The methods BeginRead and BeginWrite confuse me as wherever I read help, they seemingly do the same thing i.e. acquire the critical ...
1
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1answer
256 views

Non-Recursive vs Recursive Locks?

I am thinking of using non-recursive locks; I have found them to be having performance superiority over the standard recursive locks (e.g. SimpleRWSync). I have mainly been using critical sections but ...
36
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10answers
11k views

WPF vs. WinForms - a Delphi programmer's perspective?

I have read most of the major threads on WPF vs. WinForms and I find myself stuck in the unfortunate ambivalence you can fall into when deciding between the tried and true previous tech (Winforms), ...
18
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6answers
3k views

Where can I find inspiration for a good user interface? [closed]

I've got a mental block as far as desigining the main screen interface for a desktop application that I'm currently upgrading. When I first developed this program the screen resolution was 640 X 480. ...
0
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2answers
425 views

Is it good practice on server/client systems to automatically install updates?

I'm working on an automated update system for a legacy server/client software package written in Delphi. The way I'm designing it is so the client's (customer's) server machine runs a service which... ...
7
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1answer
535 views

What is the justification of use .inc files to declare and implement code is some Delphi RTL units?

Starting with #Delphi #XE2 many of the new RTL units related to Vcl styles, OSX and so on, uses inc files to declare types, classes and implement code (just like the FPC does), what is the ...
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10answers
8k views

Best practices concerning exit in Delphi [duplicate]

A co-worker and myself are having a debate on whats best. Both concepts work and work well but is there a general consensus on not making a call to exit? Whats better? To call exit within a ...
3
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2answers
322 views

Memory concerns while plotting escape from DLL Hell in Delphi [closed]

I work on a program with about 50 DLLs that are loaded from one executable, it's an old organically grown program where the only rationale for creating a new DLL is that one previously didn't exist to ...
2
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2answers
881 views

Restrictions Calling DLLs Across Technologies?

I want to call a DLL in my programming language of 'choice'. The documentation surrounding this clearly states that it must be a 32-bit DLL written in C, C++ or Delphi. But I wanted to call a DLL ...
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13answers
2k views

What features contributed to the evolution of Pascal?

I am compiling a detailed history of the Pascal language, and there are a few details I am missing. There are so many features today that we take for granted. What features significantly contributed ...
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1answer
200 views

Would it be possible to publish my code on an official site with a third-party library?

I'm building a rather large and extensive wrapper in Delphi for an email system called Mandrill. There are wrappers for this API in many other languages, but not for Delphi. So, I'm hoping to produce ...
69
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13answers
55k views

What happened to Borland Delphi? [closed]

I have the impression that Delphi isn't very popular anymore. But now at work I had to make some changes to an old Delphi program that we are still using. I used Borland Developer Studio 2006 and it ...
5
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1answer
525 views

Delphi Build Server - Do I need to check in .dres files?

We're using final builder to build a Delphi project and the person managing the build server noticed that projects with no .dres files were not building because they're not in SVN and because they're ...
3
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2answers
1k views

Scalability: How does splitting a database table work on different replicated SQL Servers?

I would like to know more about the general concepts behind dividing data of a database into different servers. For example, suppose I have a SQL Server database which has a massive table. Assume one ...
3
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1answer
2k views

Understanding HTTP Cookies in Indy 10 for Delphi XE2

I have been working with Indy 10 HTTP Servers / Clients lately in Delphi XE2, and I need to make sure I'm understanding session management correctly. In the server, I have a "bucket" of sessions, ...
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1answer
151 views

Strategy for clients to retrieve real-time log from HTTP server

I have an HTTP Server Service application which has its own logging mechanism. It's written in Delphi. I would like to provide a way for multiple clients to connect to this service and get a real-time ...
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3answers
1k views

Methodology behind fetching large XML data sets in pieces

I am working on an HTTP Server in Delphi which simply sends back a custom XML dataset. I am not following any type of standard formatting, such as SOAP. I have the system working seamlessly, except ...
5
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1answer
819 views

Delphi Conversion to Prism?

At my office, we are about to embark on an epic journey of converting an old Delphi 5 application to something more modern. One of our options is to convert to Delphi Prism, but we want to see what ...
0
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2answers
547 views

How to access an encrypted INI file from C on an embedded system with little RAM

I want to encrypt an INI file using a Delphi program on a Windows PC. Then I need to decrypt & access it in C on an embedded system with little RAM. I will do that once & fetch all info; I ...
16
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2answers
556 views

Is there a precedent for the license on a compiler restricting the kind of development you can use it for?

It was recently let slip that the new EULA for Delphi XE3 will prohibit Client Server development with the Professional edition without the additional purchase of a Client Server license pack. This is ...
14
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4answers
20k views

Delphi vs C# for GUI programming [closed]

I'm coming from PHP and Python background with little knowledge of C, I have done many web based application now I'm thinking of Desktop application for windows platform. A friend told me to go for ...
10
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2answers
2k views

Is Oberon really “a better Pascal”? [closed]

Reading Niklaus Wirth, one can notice that despite some popularity of Pascal, he is not glad that Oberon (as a "polished" successor of Pascal and Modula) didn't get much popularity. I never did ...
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2answers
508 views

How to call modern Pascal?

Should the developers who creates programs with Delphi, FPC, Lazarus agree with the name of the language? This struck me since every possible variation not only adds confusion for new programmers, ...
2
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0answers
620 views

Provide an OnChange event for an internal property which is controlled externally?

For fun and by request I am updating this ImageGrid component, a kind of listbox for images that has a FileNames property of type TStrings. For ease of writing, I have been misusing its FileNames....
1
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3answers
319 views

Converting mysql and SQLServer tables quickly in an update utility

The requirements are to take an existing list of identical tables (AAA0001 - AAA9999) which generally don't meed our current requirements and need to be swapped out with three tables (XXX0001-XXX999, ...
60
votes
11answers
3k views

Best Practices for Handing over Legacy Code

In a couple of months a colleague will be moving on to a new project and I will be inheriting one of his projects. To prepare, I have already ordered Michael Feathers' Working Effectively with Legacy ...
2
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3answers
835 views

Design Patterns in Delphi [closed]

Delphi has a few problems implementing some design patterns because some features it lacks, like multiple inheritance and no pure abstract classes. Are there any good resources or "Adaptation-...
3
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2answers
508 views

How to Document the Security/Encryption Code of an Application

I am working on an application that I developed a security layer for. It uses the hardware ID of the hard drive, MAC address and another hardware serial key, to lock the software a particular piece of ...
0
votes
1answer
307 views

How to layout class definition when inheriting from multiple interfaces

Given two interface definitions ... IOmniWorkItem = interface ['{3CE2762F-B7A3-4490-BF22-2109C042EAD1}'] function GetData: TOmniValue; function GetResult: TOmniValue; function GetUniqueID: ...
14
votes
5answers
2k views

From Delphi to C# for Dummies [closed]

I'm a Delphi and C# coder and have been given the assignment to introduce the most fundamental concepts of .Net/C# to my coworkers in some trainings. They are seasoned Delphi Win32 coders but still ...
13
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7answers
7k views

How is Delphi XE2 going to work across platforms? [closed]

So I've been reading a little about Delphi XE2 and I probably will go to the world tour thing in Chicago coming up later this month and ask this question if no one can answer it here. What I wonder ...