可以通过GetEnvironmentVariableW函数来获取当前登录帐号和登录域
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#include <stdlib.h>
wchar_t UserName [0x400];
wchar_t UserDomain [0x400];
/**
* 将wchar_t* 转成char*
*/
void w2c(char *pcstr,const wchar_t *pwstr, size_t len);
/**
* 将char* 转成 wchar_t*
*/
void c2w(wchar_t *pwstr,const char *str,size_t len);
int main(int agc,char* argv[])
{
GetEnvironmentVariableW(L"USERNAME", UserName, 0x400);
GetEnvironmentVariableW(L"USERDOMAIN", UserDomain, 0x400);
wprintf(L"the login userName is %s and the domain is %s\n",UserName,UserDomain);
char *pUserName = (char *)malloc(sizeof(char)*(2 * wcslen(UserName)+1));
char *pUserDomain = (char *)malloc(sizeof(char)*(2 * wcslen(UserDomain)+1));
memset(pUserName , 0 , 2 * wcslen(UserName)+1 );
w2c(pUserName,UserName,2 * wcslen(UserName)+1) ;
memset(pUserDomain , 0 , 2 * wcslen(UserDomain)+1 );
w2c(pUserDomain,UserDomain,2 * wcslen(UserDomain)+1) ;
printf("the login userName is %s and the domain is %s\n",pUserName,pUserDomain);
free(pUserName);
free(pUserDomain);
char c[]="this is from ascii";
wchar_t *wc = (wchar_t*) malloc(sizeof(wchar_t)*(strlen(c)/2)+1);
memset(wc , 0 , wcslen(wc)+1 );
c2w(wc,c,wcslen(wc)+1);
printf("%s\n",c);
wprintf(L"%s\n",wc);
free(wc);
return 0;
}
//将wchar_t* 转成char*的实现函数如下:
void w2c(char *pcstr,const wchar_t *pwstr, size_t len)
{
int nlength=wcslen(pwstr);
//获取转换后的长度
int nbytes = WideCharToMultiByte( 0, // specify the code page used to perform the conversion
0, // no special flags to handle unmapped characters
pwstr, // wide character string to convert
nlength, // the number of wide characters in that string
NULL, // no output buffer given, we just want to know how long it needs to be
0,
NULL, // no replacement character given
NULL ); // we don't want to know if a character didn't make it through the translation
// make sure the buffer is big enough for this, making it larger if necessary
if(nbytes>len) nbytes=len;
// 通过以上得到的结果,转换unicode 字符为ascii 字符
WideCharToMultiByte( 0, // specify the code page used to perform the conversion
0, // no special flags to handle unmapped characters
pwstr, // wide character string to convert
nlength, // the number of wide characters in that string
pcstr, // put the output ascii characters at the end of the buffer
nbytes, // there is at least this much space there
NULL, // no replacement character given
NULL );
}
void c2w(wchar_t *pwstr,const char *str,size_t len)
{
if(str)
{
size_t nu = strlen(str);
size_t n =(size_t)MultiByteToWideChar(0,0,(const char *)str,(int)nu,NULL,0);
if(n>=len)n=len-1;
MultiByteToWideChar(0,0,(const char *)str,(int)nu,pwstr,(int)n);
pwstr[n]=0;
}
}
这是在网上东找西找的结果哈,由于api需要的参数是wchar_t*类型的,所以在网上找了个wchar_t* TO char*的函数