如何获取计算机的用户名，注册公司等信息啊在MFC里

怎么获取计算机的用户名，注册公司等信息啊，在MFC里
怎么获取计算机的用户名，注册公司等信息啊，在MFC里

当然还有其它的一些信息，比如硬盘，操作系统之类的

------解决方案--------------------
#include <windows.h>
#include <stdio.h>

TCHAR* envVarStrings[] =
{
"OS = %OS% ",
"PATH = %PATH% ",
"HOMEPATH = %HOMEPATH% ",
"TEMP = %TEMP% "
};
#define ENV_VAR_STRING_COUNT (sizeof(envVarStrings)/sizeof(TCHAR*))
#define INFO_BUFFER_SIZE 32767
void printError( TCHAR* msg );

void main( )
{
DWORD i;
TCHAR infoBuf[INFO_BUFFER_SIZE];
DWORD bufCharCount = INFO_BUFFER_SIZE;

// Get and display the name of the computer.
bufCharCount = INFO_BUFFER_SIZE;
if( !GetComputerName( infoBuf, &bufCharCount ) )
printError( "GetComputerName " );
printf( "\nComputer name: %s ", infoBuf );

// Get and display the user name.
bufCharCount = INFO_BUFFER_SIZE;
if( !GetUserName( infoBuf, &bufCharCount ) )
printError( "GetUserName " );
printf( "\nUser name: %s ", infoBuf );

// Get and display the system directory.
if( !GetSystemDirectory( infoBuf, INFO_BUFFER_SIZE ) )
printError( "GetSystemDirectory " );
printf( "\nSystem Directory: %s ", infoBuf );

// Get and display the Windows directory.
if( !GetWindowsDirectory( infoBuf, INFO_BUFFER_SIZE ) )
printError( "GetWindowsDirectory " );
printf( "\nWindows Directory: %s ", infoBuf );

// Expand and display a few environment variables.
printf( "\n\nSmall selection of Environment Variables: " );
for( i = 0; i < ENV_VAR_STRING_COUNT; ++i )
{
bufCharCount = ExpandEnvironmentStrings(envVarStrings[i], infoBuf,
INFO_BUFFER_SIZE );
if( bufCharCount > INFO_BUFFER_SIZE )
printf( "\n\t(Buffer too small to expand: \ "%s\ ") ",
envVarStrings[i] );
else if( !bufCharCount )
printError( "ExpandEnvironmentStrings " );
else
printf( "\n %s ", infoBuf );
}
}

void printError( TCHAR* msg )
{
DWORD eNum;
TCHAR sysMsg[256];
TCHAR* p;

eNum = GetLastError( );
FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, eNum,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
sysMsg, 256, NULL );

// Trim the end of the line and terminate it with a null
p = sysMsg;
while( ( *p > 31 ) || ( *p == 9 ) )
++p;
do { *p-- = 0; } while( ( p > = sysMsg ) &&
( ( *p == '. ' ) || ( *p < 33 ) ) );

// Display the message
printf( "\n\t%s failed with error %d (%s) ", msg, eNum, sysMsg );
}

------解决方案--------------------
有这么多函数，看函数名字就知道是干什么的了

ExpandEnvironmentStrings
GetComputerName
GetCurrentHwProfile
GetKeyboardType
GetSysColor
GetSystemDirectory
GetSystemInfo
GetSystemMetrics
GetUserName
GetVersionEx
GetWindowsDirectory
IsProcessorFeaturePresent
SetComputerName
SetSysColors
SystemParametersInfo