1.在正常的中文系统下执行MultiByteToWideChar很正常,其中,第一个参数为:CP_ACP
2.在英文系统下执行MultiByteToWideChar,取得的字符编码全部变成了3F,后将"CP_ACP"替换为936,就正常显示了。
主要是WideCharToMultiByte的第一个参数codepage造成的,如前面所使用的CP_ACP所表达的意思是使用系统字符集转换,但是由于此时的系统字符集为英文,在这个codepage中并没有中文,所以转换出错。
维基百科上面是这样解释codepage 936的:936为Microsoft's character encoding for simplified Chinese。
#define MY_CONV_CODE_PAGE 936
wchar_t * ANSIToUnicode( const char* str )
{
int textlen ;
wchar_t * result;
textlen = MultiByteToWideChar( MY_CONV_CODE_PAGE, 0, str,-1, NULL,0 );
result = (wchar_t *)malloc((textlen+1)*sizeof(wchar_t));
memset(result,0,(textlen+1)*sizeof(wchar_t));
MultiByteToWideChar(MY_CONV_CODE_PAGE, 0,str,-1,(LPWSTR)result,textlen );
return result;
}
char * UnicodeToANSI( const wchar_t* str )
{
char* result;
int textlen;
textlen = WideCharToMultiByte( MY_CONV_CODE_PAGE, 0, str, -1, NULL, 0, NULL, NULL );
result =(char *)malloc((textlen+1)*sizeof(char));
memset( result, 0, sizeof(char) * ( textlen + 1 ) );
WideCharToMultiByte( MY_CONV_CODE_PAGE, 0, str, -1, result, textlen, NULL, NULL );
return result;
}
wchar_t * UTF8ToUnicode( const char* str )
{
int textlen ;
wchar_t * result;
textlen = MultiByteToWideChar( CP_UTF8, 0, str,-1, NULL,0 );
result = (wchar_t *)malloc((textlen+1)*sizeof(wchar_t));
memset(result,0,(textlen+1)*sizeof(wchar_t));
MultiByteToWideChar(CP_UTF8, 0,str,-1,(LPWSTR)result,textlen );
return result;
}
char * UnicodeToUTF8( const wchar_t* str )
{
char* result;
int textlen;
textlen = WideCharToMultiByte( CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL );
result =(char *)malloc((textlen+1)*sizeof(char));
memset(result, 0, sizeof(char) * ( textlen + 1 ) );
WideCharToMultiByte( CP_UTF8, 0, str, -1, result, textlen, NULL, NULL );
return result;
}
/*宽字符转换为多字符Unicode - ANSI*/
char* w2m(const wchar_t* wcs)
{
int len;
char* buf;
len = wcstombs(NULL,wcs,0);
if (len == 0)
return NULL;
buf = (char *)malloc(sizeof(char)*(len+1));
memset(buf, 0, sizeof(char) *(len+1));
len =wcstombs(buf,wcs,len+1);
return buf;
}
/*多字符转换为宽字符ANSI - Unicode*/
wchar_t* m2w(const char* mbs)
{
int len;
wchar_t* buf;
len =mbstowcs(NULL,mbs,0);
if (len == 0)
return NULL;
buf = (wchar_t *)malloc(sizeof(wchar_t)*(len+1));
memset(buf, 0, sizeof(wchar_t) *(len+1));
len =mbstowcs(buf,mbs,len+1);
return buf;
}
char* ANSIToUTF8(const char* str)
{
return UnicodeToUTF8(ANSIToUnicode(str));
}
char* UTF8ToANSI(const char* str)
{
return UnicodeToANSI(UTF8ToUnicode(str));
}