TCHAR 转 char

// crt_wcstombs_s.c

// This example converts a wide character

// string to a multibyte character string.

#include <stdio.h>

#include <stdlib.h>

#include <assert.h>



#define BUFFER_SIZE 100



int main( void )

{

size_t   i;

char      *pMBBuffer = (char *)malloc( BUFFER_SIZE );

wchar_t*pWCBuffer = L"Hello, world.";



printf( "Convert wide-character string:\n" );



// Conversion

wcstombs_s(&i, pMBBuffer, (size_t)BUFFER_SIZE, 

pWCBuffer, (size_t)BUFFER_SIZE );



// Output

printf("   Characters converted: %u\n", i);

printf("    Multibyte character: %s\n\n",

pMBBuffer );



// Free multibyte character buffer

if (pMBBuffer)

{

free(pMBBuffer);

}

}







基本语法：

errno_t wcstombs_s(

size_t *pConvertedChars,

char *mbstr,

size_t sizeInBytes,

const wchar_t *wcstr,

size_t count 

);







参数说明：

[out] pConvertedChars

Filled with the number of characters converted.

[out] mbstr

The address of a sequence of multibyte characters.

[in] sizeInBytes

Buffer size for mbstr.

[in] wcstr

The address of a sequence of wide characters.

[in] count

The maximum number of bytes that can be stored in the multibyte output string, or _TRUNCATE.

[in] locale

The locale to use.

返回值：

Zero if successful, otherwise an error code.