新手入门问题

xiaoboliang

各位大哥小弟刚刚入门就被HELLO WORLD编译卡住了，请各位指点一下 我们毕业设计要求用VS2005环境下开发的
代码如下
/* hello_world.c */
#include "stdafx.h"
//#include "hello world.h"
#include "protoolkit.h"
#include "prographics.h"
//#include "prostring.h"
extern "C" int user_initialize(int argc, char *argv[])
{
        int hello_function();

        hello_function();
        return (0);
}

extern "C" void user_terminate()
{
        printf("Pro/Toolkit application terminated successfully\n");

        return ;
}

extern "C" int hello_function()
{
        wchar_t wtext[64];
        double pt[3];
char helloworld[] = "Hello World!";
wchar_t  w_helloworld[PRO_NAME_SIZE];
        pt[0] = 150.0;
        pt[1] = 375.0;
ProStringToWstring( w_helloworld, helloworld );

        ProGraphicsTextDisplay(pt, wtext);
        return (0);
}
错误是“ProStringToWstring”: 找不到标识符

xiaoboliang

xiaoboliang