将多字节UTF8转换为wchar_t以便与_wfopen()一起使用

#include <Windows.h>
#include <iostream>

int main() {
    const char* utf8String = "你好，世界！";
    int utf8Length = strlen(utf8String);

    int wideCharLength = MultiByteToWideChar(CP_UTF8, 0, utf8String, utf8Length, NULL, 0);
    wchar_t* wideCharString = new wchar_t[wideCharLength + 1];
    MultiByteToWideChar(CP_UTF8, 0, utf8String, utf8Length, wideCharString, wideCharLength);
    wideCharString[wideCharLength] = L'\0';

    // 使用wideCharString与_wfopen()一起使用
    FILE* file = _wfopen(wideCharString, L"r");
    if (file != NULL) {
        // 文件打开成功，进行后续操作
        // ...
        fclose(file);
    }

    delete[] wideCharString;

    return 0;
}