C++ 如何将 TCHAR 数组转换为 std::string？
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How to convert a TCHAR array to std::string?
提问by ashmish2
How do I convert a TCHARarray to std::string(not to std::basic_string)?
如何将TCHAR数组转换为std::string（而不是std::basic_string）？
回答by Alok Save
TCHARis just a typedef that, depending on your compilation configuration, either defaults to charor wchar_t.
TCHAR只是一个 typedef，根据您的编译配置，默认为char或wchar_t.
Standard Template Library supports both ASCII (with std::string) and wide character sets (with std::wstring). All you need to do is to typedefString as either std::string or std::wstring depending on your compilation configuration. To maintain flexibility you can use the following code:
标准模板库支持 ASCII（带std::string）和宽字符集（带std::wstring）。所有你需要做的是对的typedefString作为任何的std :: string或std ::根据您的编译配置wstring的。为了保持灵活性，您可以使用以下代码：
#ifndef UNICODE
typedef std::string String;
#else
typedef std::wstring String;
#endif
Now you may use Stringin your code and let the compiler handle the nasty parts. String will now have constructors that lets you convert TCHARto std::stringor std::wstring.
现在您可以String在您的代码中使用并让编译器处理讨厌的部分。String 现在将具有构造函数，可让您转换TCHAR为std::string或std::wstring。
回答by Naszta
TCHAR type is charor wchar_t, depending on your project settings.
TCHAR 类型为char或wchar_t，具体取决于您的项目设置。
#ifdef UNICODE
// TCHAR type is wchar_t
#else
// TCHAR type is char
#endif
So if you must use std::stringinstead of std::wstring, you should use a converter function. I may use wcstombsor WideCharToMultiByte.
因此，如果必须使用std::string而不是std::wstring，则应使用转换器函数。我可以使用wcstombs或WideCharToMultiByte。
TCHAR * text;
#ifdef UNICODE
/*/
// Simple C
const size_t size = ( wcslen(text) + 1 ) * sizeof(wchar_t);
wcstombs(&buffer[0], text, size);
std::vector<char> buffer(size);
/*/
// Windows API (I would use this)
std::vector<char> buffer;
int size = WideCharToMultiByte(CP_UTF8, 0, text, -1, NULL, 0, NULL, NULL);
if (size > 0) {
buffer.resize(size);
WideCharToMultiByte(CP_UTF8, 0, text, -1, static_cast<BYTE*>(&buffer[0]), buffer.size(), NULL, NULL);
}
else {
// Error handling
}
//*/
std::string string(&buffer[0]);
#else
std::string string(text);
#endif
回答by Bo Persson
TCHAR is either char or wchar_t, so a
TCHAR 要么是 char 要么是 wchar_t，所以
typedef basic_string<TCHAR> tstring;
is one way of doing it.
是一种方法。
The other is to skip charaltogether and just use std::wstring.
另一种是char完全跳过并使用std::wstring.
回答by Aemmel
My answer is late, I'll admit that, but with the answers of 'Alok Save' and some research I've found a good way! (Note: I didn't test this version a lot, so it might not work in every case, but from what I tested it should):
我的回答晚了，我承认这一点，但是通过“Alok Save”的答案和一些研究，我找到了一个好方法！（注意：我没有经常测试这个版本，所以它可能不适用于所有情况，但从我测试的情况来看应该是）：
TCHAR t = SomeFunctionReturningTCHAR();
std::string str;
#ifndef UNICODE
str = t;
#else
std::wstring wStr = t;
str = std::string(wStr.begin(), wStr.end());
#endif
std::cout << str << std::endl; //<-- should work!
回答by serup
Quick and dirty solution :
快速而肮脏的解决方案：
TCHAR str[256] = {};
// put something in str...
// convert to string
std::string strtmp(&str[0], &str[255]);
std::cout << strtmp << std::endl;
回答by user1567759
Simple!
简单的！
char* tcharToChar(TCHAR* buffer)
{
char *charBuffer = NULL;
int lengthOfbuffer = lstrlenW(buffer);
if(buffer!=NULL)
{
charBuffer = (char*)calloc(lengthOfbuffer+1,sizeof(char));
}
else
{
return NULL;
}
for (int index = 0;
index < lengthOfbuffer;
index++)
{
char *singleCharacter = (char*)calloc(2,sizeof(char));
singleCharacter[0] = (char)buffer[index];
singleCharacter[1] = '##代码##';
strcat(charBuffer, singleCharacter);
}
strcat(charBuffer, "##代码##");
return charBuffer;
}
Then capture the char * in std::string
然后在 std::string 中捕获 char *
