Use the C/C++ DLL Adapter to call functions and static class methods in DLLs. The C/C++ DLL Adapter obtains a list of available functions and methods from the list of exports contained in the DLL file. In addition, the C/C++ DLL Adapter determines parameter type information by reading a type library or by examining the decorated names the Microsoft Visual Studio compiler generates.

To ensure that the functions and methods are available to the C/C++ DLL Adapter, follow these rules when defining the functions and classes:

• Use __declspec(dllexport) to export the function or method. You can export an entire C++ class by placing the __declspec(dllexport) before the class name, or you can export a single method by placing __declspec(dllexport) before the method name.
• Make class methods static and public. The C/C++ DLL Adapter does not allow you to call public non-static methods.
• Use only types the C/C++ DLL Adapter recognizes.
• Avoid using a .DEF file to export symbols. Using a .DEF file prevents the C/C++ DLL Adapter from obtaining type information for function and method parameters.
• Avoid using the extern "C" syntax to export symbols. The extern "C" syntax prevents the C/C++ DLL Adapter from obtaining type information for function and method parameters.

Refer to the following examples for more information:

Example 1

class __declspec(dllexport) ClassName {

public: static void MethodName(void);

};

Example 2

class ClassName {

public: static void __declspec(dllexport) MethodName(void);

};

Example 3

void __declspec(dllexport) Function(void);