Mlang COM example

mlang_example.cpp

// Mlang via COM example.
// https://msdn.microsoft.com/en-us/library/aa767865.aspx

#pragma comment(lib, "ole32.lib")

#include <windows.h>
#include <mlang.h>
#include <stdio.h>
#include <string.h>

void mlang_example1()
{
    IMultiLanguage3 *pMultiLanguage;
    HRESULT hr;
    UINT srclen;
    char src[256];
    UINT dstlen;
    char dst[256];
    DWORD mode;

    hr = CoCreateInstance(CLSID_CMultiLanguage, NULL, CLSCTX_INPROC_SERVER, IID_IMultiLanguage3, (void**)(&pMultiLanguage));
    if (!SUCCEEDED(hr)) {
        printf("CoCreateInstance() failed\n");
        return;
    }

    sprintf(src, "%s", "こんにちは世界");
    srclen = strlen(src) + 1;
    dstlen = sizeof(dst);
    mode = 0;
    hr = pMultiLanguage->ConvertString(&mode, 65001 /* UTF-8 */, 932 /* CP932 */, (BYTE*)src, &srclen, (BYTE*)dst, &dstlen);
    if (!SUCCEEDED(hr)) {
        printf("ConvertString() failed\n");
        return;
    }

    printf("%s\n", dst);

    pMultiLanguage->Release();
}

void mlang_example2()
{
    IMultiLanguage3 *pMultiLanguage;
    HRESULT hr;
    UINT srclen;
    char src[256];
    UINT dstlen;
    char dst[256];
    UINT wlen;
    wchar_t wbuf[256];
    DWORD mode;

    hr = CoCreateInstance(CLSID_CMultiLanguage, NULL, CLSCTX_INPROC_SERVER, IID_IMultiLanguage3, (void**)(&pMultiLanguage));
    if (!SUCCEEDED(hr)) {
        printf("CoCreateInstance() failed\n");
        return;
    }

    sprintf(src, "%s", "こんにちは世界");
    srclen = strlen(src) + 1;
    wlen = sizeof(wbuf) / sizeof(wbuf[0]);
    mode = 0;
    hr = pMultiLanguage->ConvertStringToUnicodeEx(&mode, 65001 /* UTF-8 */, src, &srclen, wbuf, &wlen, 0, NULL);
    if (!SUCCEEDED(hr)) {
        printf("ConvertStringToUnicodeEx() failed\n");
        return;
    }

    dstlen = sizeof(dst);
    mode = 0;
    hr = pMultiLanguage->ConvertStringFromUnicodeEx(&mode, 932 /* CP932 */, wbuf, &wlen, dst, &dstlen, MLCONVCHARF_USEDEFCHAR, L"Y");
    if (!SUCCEEDED(hr)) {
        printf("DoConversion() failed\n");
        return;
    }

    printf("%s\n", dst);

    pMultiLanguage->Release();
}

int main()
{
    CoInitialize(NULL);
    mlang_example1();
    mlang_example2();
    CoUninitialize();
    return 0;
}