请教如何查询当前系统的配置状况？

获取显存大小：#include <ddraw.h>#pragma comment(lib, "guids.lib") LPDIRECTDRAW2 lpdd;
HRESULT ddrval;

CoInitialize(NULL);

ddrval = CoCreateInstance(CLSID_DirectDraw,
NULL, CLSCTX_ALL, IID_IDirectDraw2, (void**)&lpdd);

if(!FAILED(ddrval))
{
ddrval = IDirectDraw2_Initialize(lpdd, NULL);
}

DDCAPS ddcaps;

ddcaps.dwSize = sizeof DDCAPS;
lpdd->GetCaps(&ddcaps, NULL);

lpdd->Release();

DWORD dwMem = ddcaps.dwVidMemTotal; int iMem = dwMem/1024/1024; CString strMem;
strMem.Format(_T("display memory is %d MB"),iMem); AfxMessageBox(strMem);

CoUninitialize();

http://community.csdn.net/Expert/topic/3248/3248633.xml?temp=.5899011

可以查注册表
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum 有所有信息

//给你我写的一个完整类：
/*
GetCurComputerInfo.h
*/
#ifndef __GETCURCOMPUTERINFO_H__
#define __GETCURCOMPUTERINFO_H__//CCurComputerInfo Class
#define MAXBUFSIZE 2000
class CGetCurComputerInfo
{
public:
CGetCurComputerInfo();
~CGetCurComputerInfo();

char* GetCurComputerName(char* szPCName, char* szRetCode);
char* GetCurUserName(char* szUserName, char* szRetCode);
char* GetCurOSVer(char* szOSVer, char* szRetCode);
char* GetCurCPUInfo(char* szCPUInfo, char* szRetCode);
char* GetCurMemSize(char* szMemSize);

protected:
BOOL GetOSVersion(char* szOSVer);
char* Trim(char* pStr);

private:
DWORD dwSize;

};#endif  //~__GETCURCOMPUTERINFO_H__
/*
GetCurComputerInfo.h
*/
#include "GetCurComputerInfo.h"
//Implementation of Class CGetCurComputerInfo
CGetCurComputerInfo::CGetCurComputerInfo()
{
dwSize = 256;
}CGetCurComputerInfo::~CGetCurComputerInfo()
{
}char* CGetCurComputerInfo::GetCurComputerName(char* szPCName, char* szRetCode)
{
BOOL  bRet; if (szPCName == NULL || szRetCode == NULL)
{
return NULL;
} bRet = GetComputerName(szPCName, &dwSize);
if (!bRet)
{
sprintf(szRetCode, "GetComputerName failed: %d", GetLastError());
return szRetCode;
} return szPCName;
}char* CGetCurComputerInfo::GetCurUserName(char* szUserName, char* szRetCode)
{
BOOL  bRet;
DWORD cchBuff = 256; if (szUserName == NULL || szRetCode == NULL)
{
return NULL;
}

//the second para cannot use &dwSize: why?
bRet = GetUserName(szUserName, &cchBuff);
if (!bRet)
{
sprintf(szRetCode, "GetUserName failed: %d", GetLastError());
return szRetCode;
}

return szUserName;
}
BOOL CGetCurComputerInfo::GetOSVersion(char* szOSVer)
{
   OSVERSIONINFOEX osvi;
   BOOL bOsVersionInfoEx;
   char szBuf[MAXBUFSIZE];   // Try calling GetVersionEx using the OSVERSIONINFOEX structure.
   //
   // If that fails, try using the OSVERSIONINFO structure.   if (szOSVer == NULL)
   {
   return FALSE;
   }   ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
   osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);   if( !(bOsVersionInfoEx = GetVersionEx ((OSVERSIONINFO *) &osvi)) )
   {
      // If OSVERSIONINFOEX doesn't work, try OSVERSIONINFO.      osvi.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
      if (! GetVersionEx ( (OSVERSIONINFO *) &osvi) )
         return FALSE;
   }   switch (osvi.dwPlatformId)
   {
      case VER_PLATFORM_WIN32_NT:      // Test for the product.         if ( osvi.dwMajorVersion <= 4 )
            sprintf(szOSVer, "Microsoft Windows NT ");         if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 0 )
            sprintf(szOSVer, "Microsoft Windows 2000 ");         if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1 )
            sprintf(szOSVer, "Microsoft Windows XP ");      // Test for product type.
/*
         if( bOsVersionInfoEx )
         {
            if ( osvi.wProductType == VER_NT_WORKSTATION )
            {
               if( osvi.wSuiteMask & VER_SUITE_PERSONAL )
                  printf ( "Personal " );
               else
                  printf ( "Professional " );
            }            else if ( osvi.wProductType == VER_NT_SERVER )
            {
               if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
                  printf ( "DataCenter Server " );
               else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
                  printf ( "Advanced Server " );
               else
                  printf ( "Server " );
            }
         }
         else
*/         {
            HKEY hKey;
            char szProductType[80];
            DWORD dwBufLen;            RegOpenKeyEx( HKEY_LOCAL_MACHINE,
               "SYSTEM\\CurrentControlSet\\Control\\ProductOptions",
               0, KEY_QUERY_VALUE, &hKey );
            RegQueryValueEx( hKey, "ProductType", NULL, NULL,
               (LPBYTE) szProductType, &dwBufLen);
            RegCloseKey( hKey );
            if ( lstrcmpi( "WINNT", szProductType) == 0 )
               strcat(szOSVer, "Professional " );
            if ( lstrcmpi( "LANMANNT", szProductType) == 0 )
               strcat(szOSVer, "Server " );
            if ( lstrcmpi( "SERVERNT", szProductType) == 0 )
               strcat(szOSVer, "Advanced Server " );
         }      // Display version, service pack (if any), and build number.         if ( osvi.dwMajorVersion <= 4 )
         {
   sprintf(szBuf, "version %d.%d %s (Build %d)\n",
               osvi.dwMajorVersion,
               osvi.dwMinorVersion,
               osvi.szCSDVersion,
               osvi.dwBuildNumber & 0xFFFF);    strcat(szOSVer, szBuf);
         }
         else
         {
            sprintf(szBuf, "%s (Build %d)\n",
               osvi.szCSDVersion,
               osvi.dwBuildNumber & 0xFFFF); strcat(szOSVer, szBuf);
         }
         break;      case VER_PLATFORM_WIN32_WINDOWS:         if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 0)
         {
             sprintf(szOSVer, "Microsoft Windows 95 ");
             if ( osvi.szCSDVersion[1] == 'C' || osvi.szCSDVersion[1] == 'B' )
                strcat(szOSVer, "OSR2 " );
         }          if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 10)
         {
             sprintf(szOSVer, "Microsoft Windows 98 ");
             if ( osvi.szCSDVersion[1] == 'A' )
                strcat(szOSVer, "SE " );
         }          if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 90)
         {
             sprintf(szOSVer, "Microsoft Windows Me ");
         }
         break;      case VER_PLATFORM_WIN32s:         sprintf(szOSVer, "Microsoft Win32s ");
         break;
   }   return TRUE;
}
char* CGetCurComputerInfo::GetCurOSVer(char* szOSVer, char* szRetCode)
{
BOOL  bRet; if (szOSVer == NULL || szRetCode == NULL)
{
return NULL;
}

bRet = GetOSVersion(szOSVer);
if (!bRet)
{
sprintf(szRetCode, "GetUserName failed: %d", GetLastError());
return szRetCode;
}

return szOSVer;
}char* CGetCurComputerInfo::GetCurMemSize(char* szMemSize)
{
MEMORYSTATUS msStat;

if (szMemSize == NULL)
{
return NULL;
}

GlobalMemoryStatus (&msStat); sprintf(szMemSize, "%ldKB Free/%ldKB Total(Physical)", msStat.dwAvailPhys/1024, msStat.dwTotalPhys/1024);

return szMemSize;
}char* CGetCurComputerInfo::GetCurCPUInfo(char* szCPUInfo, char* szRetCode)
{
HKEY hKey;
LPCTSTR lpSubkey =  "HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0";
BYTE bBuf[100];
DWORD dwBufSize = 100;
DWORD dwType = REG_SZ;
long  lRet; ZeroMemory(bBuf, sizeof(bBuf));

lRet = RegOpenKeyEx(HKEY_LOCAL_MACHINE, lpSubkey, 0, KEY_READ, &hKey);
if (lRet != ERROR_SUCCESS)
{
sprintf(szRetCode, "RegOpenKeyEx Failed: %d", GetLastError());
return szRetCode;
} lRet = RegQueryValueEx(hKey, "ProcessorNameString", NULL, &dwType, bBuf, &dwBufSize);
if (lRet != ERROR_SUCCESS)
{
sprintf(szRetCode, "RegQueryValueEx Failed: %d", GetLastError());
RegCloseKey(hKey);
return szRetCode;
} sprintf(szCPUInfo, "%s", bBuf);
Trim(szCPUInfo); RegCloseKey(hKey);
return szCPUInfo;
}char* CGetCurComputerInfo::Trim(char* pStr)
{
char* pBegin;
char* pEnd;
long len;

if (pStr == NULL)
{
return NULL;
}
len=strlen(pStr);
if(len<=0)
{
return pStr;
}

pBegin = pStr;
pEnd = pStr + len - 1;

while (isspace(*pBegin) && *pBegin != '\0')
pBegin ++;

while (isspace(*pEnd) && pEnd > pBegin)
pEnd --;

len = pEnd - pBegin + 1;
strncpy(pStr, pBegin, len);
pStr[len] = '\0';

return pStr;
}//Implementation of CGetCurComputerInfo end

小三大侠的查询注册表究竟怎样进行呀？楼上的完整类真的很好，但是怎么样设置MSVC .NET 2002英文版来使用呢？使用MFC，还是ATL，还是普通的WIN32？请能否给出项目文件呢？

VC访问注册表访问注册表编程的基本框架
========================
//声明 HEKY hk;
//Step 1 打开注册表的具体键RegOpenKeyEx
//Step 2 对注册表操作，RegQueryValueEx，RegSetValueEx.................
//关闭 ::RegCloseKey(hk); 前期准备
======== 声明方法： HEKY hk;
//可以换你喜欢的变量，MD说了一句废话关于键的值的类型：就是下面的 data_Get 的类型是 LPCTSTR 关于返回值：例如下面的 ret0 可以通过ERROR_SUCCESS判断，大家可以看下面的示例代码关于调用的API的参数问题：不要客气，打开MSDN，写得很清楚明白。访问注册表数据的例子
====================
//----------------------------------------------------------------
//获取WIN98版本
//---------------------------------------------------------------- HKEY hk; LPCTSTR data_Get="Software\\Microsoft\\Windows\\CurrentVersion";//在注册表里的位置 long ret0=::RegOpenKeyEx(HKEY_LOCAL_MACHINE,
//根 data_Get, 0,
//必须为0，保留 KEY_READ,
//安全访问屏蔽字，具体见MSDN，列出了所有的值 &hk);
//通过ERROR_SUCCESS判断打开是否成功。 if(ret0!=ERROR_SUCCESS) MessageBox("打开注册表出现错误！","错误"); LPBYTE win_version=new BYTE[80];DWORD type=REG_SZ;DWORD cbData=80; long ret1=::RegQueryValueEx(hk,"VersionNumber",
//请求得到的键的名称NULL,
//保留，必须为NULL&type,
//值的类型，具体见MSDNwin_version,
//接受值的缓冲区 &cbData);
//缓冲区大小if(ret1!=ERROR_SUCCESS){ MessageBox("读取注册表键值出现错误！","错误"); } CString str_winversion=CString(win_version); delete[] win_version;::RegCloseKey(hk);
//----------------------------------------------------------------
用API访问注册表就是一段套话，大家可以按照我的框架来写自己的访问注册表的代码。在进行VC编程的时候要有MSDN,在改写注册表的时候要先备份你的注册表。
在MFC中访问注册表
=================
MFC在类CWinApp里提供了一个成员函数SetRegistryKey(),调用它后就可以用访问.ini文件的成员函数访问注册表了。CWinApp::SetRegistryKey() 格式：void SetRegistryKey(LPCTSTR lpszRegistryKey);lpszRegistryKey 的含义：HKEY_CURRENT_USER\SoftWare 下的子键名称。调用后下面的函数就可以访问注册表了。CWinApp::GetProfileInt(...) CWinApp::GetProfileString(...) CWinApp::WriteProfileInt(...) CWinApp::WriteProfileString(...)例子：
//----------------------------------------------------------------
//在HKEY_CURRENT_USER\SoftWare下建立mykey主键，然后在它下面建立串
//值my_string_value 和 DWORD 键值 my_int_value
//---------------------------------------------------------------- CString strKey=mykey; CString strStringItem=my_string_value; CString strIntItem=my_int_value; CWinApp* pApp=AfxGetApp();pApp->SetRegistryKey(strkey);pApp->WriteProfileString(strKey,strStringItem,hello);CString strValue;strValue=pApp->GetProfileString(strKey,strStringItem,"默认值");ASSERT(strValue==test);int nValue;nValue=pApp->GetProfileInt(strKey,strIntItem,0); ASSERT(nValue==1111);
//End That's all.--

显示器的一些基本的显示特性和能力，比如尺寸是17寸，21寸，是CRT，还是LCD，等等；厉害厉害....
我顶:)

调试易

请教如何查询当前系统的配置状况？

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