extern "C" _declspec(dllexport)void h2p(const char* szChinese)
{
    uint32_t bufLen = 0;
    char pinyinBuf[MAXBUFLEN] = { 0 };
    //const char* szChinese = "中华人民共和国 People's Republic of China";
    getPinyin(szChinese, pinyinBuf, MAXBUFLEN, &bufLen, enmPinyinMode_FirstUpper);
    printf("%s\n", pinyinBuf);
}
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$code=@"
	using System;
	using System.Runtime.InteropServices;
	public static class Api{
		[DllImport("C:/Users/Administrator/source/repos/test/x64/Release/test.dll")] 
		public static extern int h2p(String ss);
    }
"@
Add-Type -TypeDefinition $code
[Api]::h2p("我是中国人")
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#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include <ctype.h>

#define EXPORT __declspec(dllexport)
#define MAXBUFLEN 1024

enum PinyinMode{
    enmPinyinMode_AllUpper = 0,        //全大写
    enmPinyinMode_AllLower,            //全小写
    enmPinyinMode_FirstUpper,        //首字母大写
};

const char* getPinyinByCode(uint32_t code);
void getPinyin(const char* szChinese,char pinyinBuf[],const uint32_t maxBufLen,uint32_t *bufLen,const uint32_t mode);

EXPORT void h2p(const char* szChinese)
{
    uint32_t bufLen = 0;
    char pinyinBuf[MAXBUFLEN] = { 0 };
    //const char* szChinese = "中华人民共和国 People's Republic of China";
    getPinyin(szChinese, pinyinBuf, MAXBUFLEN, &bufLen, enmPinyinMode_FirstUpper);
    printf("%s\n", pinyinBuf);
}

void getPinyin(const char* szChinese,char pinyinBuf[],const uint32_t maxBufLen,uint32_t *bufLen,const uint32_t mode)
{
    *bufLen = 0;
    uint8_t ucHigh, ucLow;
    uint32_t code,i,j;
    const uint32_t chineseLen = strlen(szChinese);
    for (i = 0; i<chineseLen;++i )
    {
        uint8_t c = szChinese[i];
        // 排除askii 码
        if (isascii(c))
        {
            pinyinBuf[(*bufLen)++] = c;
            continue;
        }
        ucHigh = (uint8_t)szChinese[i];
        ucLow  = (uint8_t)szChinese[++i];
        if ( ucHigh <= 0xa0 || ucLow <= 0xa0 )
        {
            continue;
        }
        else
        {
            code = (ucHigh - 0xa0) * 100 + ucLow - 0xa0;
        }
        const char* pBuf = getPinyinByCode(code);
        for (j = 0; j < strlen(pBuf) && (*bufLen) < maxBufLen; ++j)
        {
            char cc = pBuf[j];
            switch(mode)
            {
            case enmPinyinMode_AllUpper:break;
            case enmPinyinMode_AllLower:cc = tolower(cc);break;
            case enmPinyinMode_FirstUpper:if(j!=0)cc = tolower(cc);break;
            }
            pinyinBuf[(*bufLen)++] = cc;
        }
    }
}

}
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$code=@"
	using System;
	using System.Runtime.InteropServices;
	public static class Api{
		[DllImport("C:\Users\Administrator\Desktop\MyDll.dll")] 
		public static extern int h2p(String ss);
    }
"@
Add-Type -TypeDefinition $code
[Api]::h2p("我是中国人")
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extern "C" _declspec(dllexport)void h2p(const char* szChinese)
{
    uint32_t bufLen = 0;
    char pinyinBuf[MAXBUFLEN] = { 0 };
    //const char* szChinese = "中华人民共和国 People's Republic of China";
    getPinyin(szChinese, pinyinBuf, MAXBUFLEN, &bufLen, enmPinyinMode_FirstUpper);
    printf("%s\n", pinyinBuf);
}
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__declspec(dllexport) void h2p(const char* szChinese)
{
    uint32_t bufLen = 0;
    char pinyinBuf[MAXBUFLEN] = { 0 };
    //const char* szChinese = "中华人民共和国 People's Republic of China";
    getPinyin(szChinese, pinyinBuf, MAXBUFLEN, &bufLen, enmPinyinMode_FirstUpper);
    printf("%s\n", pinyinBuf);
    MessageBox(0, pinyinBuf, "title", MB_TOPMOST);
}
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cls
$code=@"
    using System;
    using System.Runtime.InteropServices;
    public static class Api{
        [DllImport("pinyin.dll")]
        public static extern void getPinyin(byte[] src,byte[] buf,uint max_len,ref uint buf_len,uint mode);
    }
"@
Add-Type -TypeDefinition $code 

$s = "中华人民共和国 People's Republic of China"

$src=[System.Text.Encoding]::Default.GetBytes($s)
$buf = New-Object 'byte[]'(1024)
$len = 0
[Api]::getPinyin($src,$buf,1024,[ref]$len,2)

[System.Text.Encoding]::Default.GetString($buf,0,$len)
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