问题描述
我尝试过实现这样的功能，但不幸的是它不起作用:
I've tried implementing a function like this, but unfortunately it doesn't work:
const wchar_t *GetWC(const char *c)
{
const size_t cSize = strlen(c)+1;
wchar_t wc[cSize];
mbstowcs (wc, c, cSize);
return wc;
}
我的主要目标是能够在 Unicode 应用程序中集成普通字符字符串.非常感谢你们提供的任何建议.
My main goal here is to be able to integrate normal char strings in a Unicode application. Any advice you guys can offer is greatly appreciated.
推荐答案
使用 std::wstring 而不是 C99 变长数组.当前标准保证 std::basic_string 的连续缓冲区.例如，
Use a std::wstring instead of a C99 variable length array. The current standard guarantees a contiguous buffer for std::basic_string. E.g.,
std::wstring wc( cSize, L'#' );
mbstowcs( &wc[0], c, cSize );
C++ 不支持 C99 可变长度数组，因此如果您将代码编译为纯 C++，它甚至无法编译.
C++ does not support C99 variable length arrays, and so if you compiled your code as pure C++, it would not even compile.
随着更改，您的函数返回类型也应该是 std::wstring.
With that change your function return type should also be std::wstring.
记得在main中设置相关的locale.
Remember to set relevant locale in main.
例如，setlocale( LC_ALL, "" ).
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