问题描述
如何转换 Platform::String 的内容以供需要基于 char* 的字符串的函数使用?我假设 WinRT 为此提供了帮助函数，但我找不到它们.
How do I convert the contents of a Platform::String to be used by functions that expect a char* based string? I'm assuming WinRT provides helper functions for this but I just can't find them.
谢谢！
推荐答案
Platform::String::Data() 将返回一个 wchar_t const* 指向内容的字符串(类似于 std::wstring::c_str()).Platform::String 代表一个不可变的字符串，因此没有访问器来获取 wchar_t*.您需要复制其内容，例如转换为 std::wstring，进行更改.
Platform::String::Data() will return a wchar_t const* pointing to the contents of the string (similar to std::wstring::c_str()). Platform::String represents an immutable string, so there's no accessor to get a wchar_t*. You'll need to copy its contents, e.g. into a std::wstring, to make changes.
没有直接方法来获得char*或char const*，因为Platform::String使用宽字符(所有 Metro 风格应用程序都是 Unicode 应用程序).您可以使用 WideCharToMultiByte 转换为多字节.
There's no direct way to get a char* or a char const* because Platform::String uses wide characters (all Metro style apps are Unicode apps). You can convert to multibyte using WideCharToMultiByte.
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