Delphi Source Files

The compiler expects to find Delphi source code in files of three kinds:

  • Unit source files (which end with the .pas extension)
  • Project files (which end with the .dpr extension)
  • Package source files (which end with the .dpk extension)

Unit source files typically contain most of the code in an application. Each application has a single project file and several unit files; the project file, which corresponds to the program file in traditional Pascal, organizes the unit files into an application. Borland development tools automatically maintain a project file for each application.

If you are compiling a program from the command line, you can put all your source code into unit (.pas) files. If you use the IDE to build your application, it will produce a project (.dpr) file.

Package source files are similar to project files, but they are used to construct special dynamically linkable libraries called packages.

Project Management Made Easy

Project Management Made Easy

What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

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