Mastering Delphi Programming: A Complete Reference Guide

Using a proxy DLL in Delphi

To use any DLL from a Delphi program, we must firstly import functions from the DLL. There are different ways to do this—we could use static linking, dynamic linking, and static linking with delayed loading. There's plenty of information on the internet about the art of DLL writing in Delphi so I won't dig into this topic. I'll just stick with the most modern approach—delay loading.

The code archive for this book includes two demo programs, which demonstrate how to use the DllLib1.dll library. The simpler one, CppClassImportDemo uses the DLL functions directly, while CppClassWrapperDemo wraps them in an easy-to-use class.

Both projects use the CppClassImport unit to import the DLL functions into the Delphi program. ...