获取设备信息列表

1. #include <Windows.h> 
2. #include <SetupAPI.h> 
3. #include <stdio.h> 
4. #include <devguid.h> 
5. #include <RegStr.h> 
6.  
7. BOOL EnumDeviceInterface(const GUID * InterfaceClassGUID){ 
8.     HDEVINFO DeviceInfoSet; 
9.     HDEVINFO NewDeviceInfoSet; 
10.     SP_DEVICE_INTERFACE_DATA DeviceInterfaceData; 
11.     PSP_DEVICE_INTERFACE_DETAIL_DATA lpDeviceInterfaceDetailData; 
12.     DWORD dwBufferSize = 0; 
13.     DWORD i; 
14.  
15.     DeviceInfoSet = SetupDiCreateDeviceInfoList(NULL,NULL); 
16.     if(DeviceInfoSet == INVALID_HANDLE_VALUE){ 
17.         printf("Create device interface failed.(%d)\n",GetLastError()); 
18.         return 0; 
19.     } 
20.     NewDeviceInfoSet = SetupDiGetClassDevsEx(InterfaceClassGUID,NULL,NULL,DIGCF_DEVICEINTERFACE|DIGCF_PRESENT,DeviceInfoSet,NULL,NULL); 
21.     if(NewDeviceInfoSet == INVALID_HANDLE_VALUE){ 
22.         printf("Get device interface infomation failed."); 
23.         return 0; 
24.     } 
25.     DeviceInterfaceData.cbSize = sizeof(DeviceInterfaceData); 
26.     for(i=0;;i++){ 
27.         BOOL bResult = SetupDiEnumDeviceInterfaces(NewDeviceInfoSet,NULL,InterfaceClassGUID,i,&DeviceInterfaceData); 
28.         if(!bResult){ 
29.             if(bResult != NO_ERROR && GetLastError()!=ERROR_NO_MORE_ITEMS){ 
30.                 printf("ERROR:%d\n",GetLastError()); 
31.                 return FALSE; 
32.             } 
33.             break; 
34.         }else{ 
35.             lpDeviceInterfaceDetailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)HeapAlloc(GetProcessHeap(),0,sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA)); 
36.             lpDeviceInterfaceDetailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA); 
37.             dwBufferSize = lpDeviceInterfaceDetailData->cbSize; 
38.             while(!SetupDiGetDeviceInterfaceDetail(NewDeviceInfoSet,&DeviceInterfaceData,lpDeviceInterfaceDetailData,dwBufferSize,&dwBufferSize,NULL)){ 
39.                 if(ERROR_INSUFFICIENT_BUFFER == GetLastError()){ 
40.                     lpDeviceInterfaceDetailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)HeapReAlloc(GetProcessHeap(),0,lpDeviceInterfaceDetailData,dwBufferSize); 
41.                     lpDeviceInterfaceDetailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA); 
42.                 } 
43.             } 
44.             printf("DevicePath:%s\n",lpDeviceInterfaceDetailData->DevicePath); 
45.             HeapFree(GetProcessHeap(),0,lpDeviceInterfaceDetailData); 
46.         } 
47.     } 
48.     return TRUE; 
49. } 
50.  
51. int main(int argc,char * argv[],char *envp[]){ 
52.     printf("Get device interface information.\n"); 
53.     EnumDeviceInterface(&GUID_DEVINTERFACE_DISK); 
54.     return 0; 
55. } 

本文转hackfreer51CTO博客，原文链接：http://blog.51cto.com/pnig0s1992/684000，如需转载请自行联系原作者