请教一个ruby调用dll的问题

网上关于ruby调用Win32API的资料不多，现在有一个ICTCLAS.dll文件，相关接口如下

bool ICTCLAS_Init(const char * sInitDirPath=NULL);
bool ICTCLAS_ParagraphProcess(const char *sParagraph,char *sResult);
bool ICTCLAS_Exit();

下面是一段c的实现

#include "ICTCLAS.h"
#include <stdio.h>
#include <string.h>

int main(int argc, char* argv[])
{
	//Sample1: Sentence or paragraph lexical analysis with only one result
        char sSentence[2000],sSentenceResult[5000];
	if(!ICTCLAS_Init())	
	{
	   printf("Init fails\n");
	   return -1;
	}
	printf("Input sentence now('q' to quit)!\n");
	scanf("%s",sSentence);
	while(_stricmp(sSentence,"q")!=0)
	{
		ICTCLAS_ParagraphProcess(sSentence,sSentenceResult);
		printf("%s\nInput string now('q' to quit)!\n",sSentenceResult);
		scanf("%s",sSentence);
	}
        ICTCLAS_Exit();
	return 0;
}

请问用ruby如何实现
大致结构是
require 'Win32API'
a = Win32API.new('dll.dll', 'getSome', paramsType, returnValueType)
a.call(params)
但是尝试失败，请指教，谢谢．

间接的用LoadLibrary这个函数试试。

public synchronized native boolean init(int i, int j);
public synchronized native String paragraphProcess(String sParagraph);
public synchronized native boolean fileProcess(String source, String target);

require 'Win32API'
a = Win32API.new('ICTCLAS', 'Init',['i','i'], 'v')
a.call(0,1)
b = Win32API.new('ICTCLAS','ParagraphProcess','P','P')
puts b.call("你太有才了")
c = Win32API.new('ICTCLAS','FileProcess',['P','P'],'v')
puts c.call("in.txt","out.txt")

现在就是

b = Win32API.new('ICTCLAS','ParagraphProcess','P','P')
puts b.call("你太有才了")

这个接口调用失败，请问String类型的参数我是指定为'P'吗？

知道了

b = Win32API.new('ICTCLAS','ParagraphProcess','PP','v')
res = '\0'*256   
b.call("你太有才了",res)
puts res