test_test

Question

/* com_com.h */

#ifndef _COM_COM_H
#define _COM_COM_H

#define COMP_CALL  /* __cdecl */

#define interface            struct
#define DECLARE_INTERFACE(iface) \
        struct iface##Vtbl;  \
        interface iface { \
            struct iface##Vtbl * lpVtbl; \
        }; \
        typedef interface iface iface; \
        typedef iface * P##iface;\
        struct iface##Vtbl

#define METHOD(method)       ULONG  (COMP_CALL * method)
#define METHOD_(type,method) type (COMP_CALL * method)

#endif /* _COM_COM_H */

Answer 1

/* makefile */

COM_INCS = -Iinclude
COM_CFLG = -g -Wall
COM_SRCS = src/com_fun.c src/test_com.c

TEST:
        gcc -o $@ $(COM_SRCS) $(COM_INCS) $(COM_CFLG)
clean:
        rm TEST

Answer 2

/* com_fun.c */

#include <stdio.h>
#include "com_fun.h"

/* Function declartion */
int testHelloCProgram(char *pszVal);
int testHelloCPlusPlus(char *pszVal);
int testHelloJava(char *pszVal);

struct IIF_COMMON_TESTVtbl g_ComTestInterface =
{
    testHelloCProgram,
    testHelloCPlusPlus,
    testHelloJava,
};

int testHelloCProgram(char *pszVal)
{
    printf("[C]%s\n", pszVal);
    return 0;
}

int testHelloCPlusPlus(char *pszVal)
{
    printf("[CPP]%s\n", pszVal);
    return 0;
}

int testHelloJava(char *pszVal)
{
    printf("[JAVA]%s\n", pszVal);
    return 0;
}

Answer 3

/* common.h */
#ifndef _COMMON_H
#define _COMMON_H

#include <stdio.h>
#include "com_com.h"

DECLARE_INTERFACE(IIF_COMMON_TEST)
{
    METHOD_(int, pf_testHelloWorld)(char *pszVal);
    METHOD_(int, pf_testHelloCProgram)(char *pszVal);
    METHOD_(int, pf_testHelloCPlusPlus)(char *pszVal);
    METHOD_(int, pf_testHelloJava)(char *pszVal);   
};

#endif

Answer 4

/* test_com.c */
#include <stdio.h>
#include "com_fun.h"

extern struct IIF_COMMON_TESTVtbl g_ComTestInterface;

int main(int argc, char *argv[])
{
    char * pszMsg = "Great Module";
   
    g_ComTestInterface.pf_testHelloCPlusPlus(pszMsg);

    return 0;
}