问题描述
如何将字符串从 wchar_t
转换为 LPSTR
。
How can I convert a string from wchar_t
to LPSTR
.
推荐答案
wchar_t
字符串由16位单元组成,即 LPSTR
是指向八位字节串的指针,定义如下:
A wchar_t
string is made of 16-bit units, a LPSTR
is a pointer to a string of octets, defined like this:
typedef char* PSTR, *LPSTR;
重要的是LPSTR 可以空>终止。
What's important is that the LPSTR may be null-terminated.
从 wchar_t
转换为 LPSTR
时,您必须决定关于要使用的编码。完成此操作后,您可以使用函数执行转换。
When translating from wchar_t
to LPSTR
, you have to decide on an encoding to use. Once you did that, you can use the WideCharToMultiByte
function to perform the conversion.
例如,以下是翻译宽字符串转换为UTF8,使用STL字符串简化内存管理:
For instance, here's how to translate a wide-character string into UTF8, using STL strings to simplify memory management:
#include <windows.h>
#include <string>
#include <vector>
static string utf16ToUTF8( const wstring &s )
{
const int size = ::WideCharToMultiByte( CP_UTF8, 0, s.c_str(), -1, NULL, 0, 0, NULL );
vector<char> buf( size );
::WideCharToMultiByte( CP_UTF8, 0, s.c_str(), -1, &buf[0], size, 0, NULL );
return string( &buf[0] );
}
您可以使用此功能翻译 wchar_t *
到 LPSTR
:
You could use this function to translate a wchar_t*
to LPSTR
like this:
const wchar_t *str = L"Hello, World!";
std::string utf8String = utf16ToUTF8( str );
LPSTR lpStr = utf8String.c_str();
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