This book addresses the need for interfaces, or bridges, between the multiple popular programming languages. With the development of the advanced computer controls and applications, the single programming language sometimes has a limitation for today's complicated projects. Programmers will frequently be working with multiple programming languages at a time and, currently, do not have a "bridge" language to tie things together. They spend countless work hours either converting code or working simultaneously on 2 (or more) different languages at once. To solve this problem and to utilize the advantages of multiple languages, an interface is needed to set a bridge between the different languages. The programming languages covered in this book include: C/C++ and Visual C++ 6.0, Visual Basic 6.0, Java 1.2 and 1.3, Perl, LabView, LabWindows/CVI and Measurement Studio, Matlab, Matlab C/C++ Math library, Matlab compiler and Matlab Graphic library, and SmallTalk. Practical and hands-on programming examples are provided with each project in the book. All program examples, which are stored in the attached CD-ROM, have been tested, debugged and applied in the actual projects. Readers can easily select the examples to suit their special needs.