Crystal Reports has always been a leader in report design and development tools, with powerful functions and flexible design. In version 8.5 of Crystal Reports, more COM ideas are integrated and more emphasis is placed on the concept of RDC (Report Designer Component). This book details the design of Crystal Reports and the development of Crystal Reports on the Windows platform (including development in three language environments: Visual C++, Visual Basic, and Visual Studio.NET). Through a large number of examples, it explains the specific report design in a simple and easy-to-understand way, which has strong practicality and guiding significance. The content of this book is easy to understand, and the examples are detailed. It provides the most comprehensive summary of the design and development of Crystal Reports. The large number of examples is urgently needed by programmers. Both report system designers and report application developers can benefit from this book.