获取用户名

我就是我 2022-09-06 04:47 159阅读 0赞

在windows平台下，使用GetUserName获取当前用户名，使用GetComputerName获取当前计算机名；

#include <iostream>
    
    #include <windows.h>
    #include <cstring>
    #include <string>
    
    #include "lm.h"
    #pragma comment(lib,"netapi32.lib")
    
    using namespace std;
    
    // 多字节转string
    string WCharToMByte(LPCWSTR lpcwszStr)
    {
    	string str;
    	DWORD dwMinSize = 0;
    	LPSTR lpszStr = NULL;
    	dwMinSize = WideCharToMultiByte(CP_OEMCP, NULL, lpcwszStr, -1, NULL, 0, NULL, FALSE);
    	if (0 == dwMinSize)
    	{
    		return FALSE;
    	}
    	lpszStr = new char[dwMinSize];
    	WideCharToMultiByte(CP_OEMCP, NULL, lpcwszStr, -1, lpszStr, dwMinSize, NULL, FALSE);
    	str = lpszStr;
    	delete[] lpszStr;
    	return str;
    }
    
    
    string get_computer_name()
    {
        char buffer[512];
        DWORD name_len=512;
        string name;
        
        GetComputerName((LPSTR)buffer,&name_len);
        name.assign(buffer);
        
        return name;
    }
    
    void Get_LogUser(string &strName)
    {
    	TCHAR abyUserName[MAX_PATH] = { 0 };
    	DWORD dwSize = MAX_PATH;
    	::GetUserName(abyUserName, &dwSize);
    
    	LPUSER_INFO_3 bufptr = NULL;
    	NET_API_STATUS t3;
    	t3 = NetUserGetInfo(0, abyUserName, 3, (LPBYTE*)&bufptr);
    	if (t3 != NERR_Success)
    	{
    		return;
    	}
    
    	//全名不为空，就使用用户名的全名，为空就使用用户名
    	string strFullName = WCharToMByte(bufptr->usri3_full_name);
    	if (strFullName.empty())
    	{
    		strName = WCharToMByte(bufptr->usri3_name);
    	}
    	else
    	{
    		strName = WCharToMByte(bufptr->usri3_full_name);
    	}
    
    	NetApiBufferFree(bufptr);
    	bufptr = NULL;
    }
    
    int main()
    {
    	TCHAR strBuffer[256] = { 0 };
    	DWORD dwSize = 256;
    	//GetUserName(strBuffer, &dwSize);
    	string computerName;
    	Get_LogUser(computerName);
    	cout << "当前用户名：" << computerName << endl;
    	return 0;
    }