[VC(Visual C++) ]- 53_抓取硬體資訊

[VC(Visual C++) ]- 53_抓取硬體資訊

 

本篇分享53_抓取硬體資訊範例，有興趣的(C/P)同好，歡迎來http://yfdisk.com/file/jashliao/fdb36af8/索取，因為我不會上傳檔案分享哈哈 ^ ^。

程式碼

001       #include <stdio.h> 002       #include <windows.h> 003       #include <setupapi.h> 004       #include <devguid.h> 005       #include <regstr.h> 006    007       int main( int argc, char *argv[ ], char *envp[ ] ) 008       { 009           HDEVINFO hDevInfo; 010           SP_DEVINFO_DATA DeviceInfoData; 011           DWORD i; 012    013           // Create a HDEVINFO with all present devices. 014           hDevInfo = SetupDiGetClassDevs(NULL, 015               0, // Enumerator 016               0, 017               DIGCF_PRESENT | DIGCF_ALLCLASSES ); 018           019           if (hDevInfo == INVALID_HANDLE_VALUE) 020           { 021               // Insert error handling here. 022               return 1; 023           } 024           025           // Enumerate through all devices in Set. 026           027           DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA); 028           for (i=0;SetupDiEnumDeviceInfo(hDevInfo,i, 029               &DeviceInfoData);i++) 030           { 031               DWORD DataT; 032               LPTSTR buffer = NULL; 033               DWORD buffersize = 0; 034               035               // 036               // Call function with null to begin with, 037               // then use the returned buffer size (doubled) 038               // to Alloc the buffer. Keep calling until 039               // success or an unknown failure. 040               // 041               //  Double the returned buffersize to correct 042               //  for underlying legacy CM functions that 043               //  return an incorrect buffersize value on 044               //  DBCS/MBCS systems. 045               // 046               while (!SetupDiGetDeviceRegistryProperty( 047                   hDevInfo, 048                   &DeviceInfoData, 049                   SPDRP_DEVICEDESC, 050                   &DataT, 051                   (PBYTE)buffer, 052                   buffersize, 053                   &buffersize)) 054               { 055                   if (GetLastError() == 056                       ERROR_INSUFFICIENT_BUFFER) 057                   { 058                       // Change the buffer size. 059                       if (buffer) LocalFree(buffer); 060                       // Double the size to avoid problems on 061                       // W2k MBCS systems per KB 888609. 062                       buffer =(char *)LocalAlloc(LPTR,buffersize * 2); 063                   } 064                   else 065                   { 066                       // Insert error handling here. 067                       break; 068                   } 069               } 070               071               printf("Result:[%s]\n",buffer); 072               073               if (buffer) LocalFree(buffer); 074           } 075           076           077           if ( GetLastError()!=NO_ERROR && 078                GetLastError()!=ERROR_NO_MORE_ITEMS ) 079           { 080               // Insert error handling here. 081               return 1; 082           } 083           084           //  Cleanup 085           SetupDiDestroyDeviceInfoList(hDevInfo); 086           087           return 0; 088       }