You can access existing C++ classes from other languages such as ILE C,but you need to write your own functions to display and manipulate the data members of these classes.
A shared C/C++ header for class MyClass might look like the following:
Mapping a C++ Class to a C Structure
A C++ class without virtual functions can be mapped to a corresponding C structure, but there are fundamental differences between both data types. The C++ class contains data members and member functions to access and manipulate these data members.The corresponding C structure contains only the data members, but not the member functions contained in the C++ class.
The class Class1 in C++ is:
To access a C++ class from a C program you need to write your own functions to inspect and manipulate the class data members directly.
Note: While data members in the C++ class can be public, protected, or private, the variables in the corresponding C structure are always publicly accessible. Be careful, you may eliminate the safeguards built into the C++ language.
You can use C++ operators on this class if you supply your own definitions of these operators in the form of member functions.
When you write your own C++ classes that you want to access from other languages:
Using C++ Objects in a C Program
This program shows how you can access the data members in C++ classes from source code written in C.
The program consists of these files:
In its main() function the program:
The C++ source file hourclas.cpp is:
The program output is:
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Introduction To The Ile C/c++ Compiler
Creating A Program
Working With Exports From Service Programs
Example - Creating A Sample Ile C Application
Running A Program
Debugging A Program
Using Stream And Record I/o Functions With Iseries Data
Using Ile C/c++ Stream Functions With The Iseries Integrated File System
Using Externally Described Files In Your Programs
Using Database Files And Distributed Data Management Files In Your Programs
Using Device Files In Your Programs
Handling Exceptions In Your Program
Using Iseries Pointers In Your Program
Using Packed Decimal Data In Your C Programs
Internationalizing Your Program
International Locale Support
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