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#include "stdafx.h"
#include <iostream>
#include <stdlib.h>
#include <windows.h>
#include <setupapi.h>
#define MY_DEVICE_ID "Vid_04d8&Pid_0040"
int main()
{
// GUID des devices qui nous intéressent, qu'on va passer en parametre de la fonction SetupdiGetClassDevs()
GUID InterfaceClassGuid = {0x4d1e55b2, 0xf16f, 0x11cf, 0x88, 0xcb, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30};
HDEVINFO DeviceInfoTable = INVALID_HANDLE_VALUE;
PSP_DEVICE_INTERFACE_DATA InterfaceDataStructure = new SP_DEVICE_INTERFACE_DATA;
PSP_DEVICE_INTERFACE_DETAIL_DATA DetailedInterfaceDataStructure = new SP_DEVICE_INTERFACE_DETAIL_DATA;
SP_DEVINFO_DATA DevInfoData;
DWORD InterfaceIndex = 0;
DWORD StatusLastError = 0;
DWORD dwRegType;
DWORD dwRegSize;
DWORD StructureSize = 0;
PBYTE PropertyValueBuffer;
bool MatchFound = false;
DWORD ErrorStatus;
HANDLE WriteHandle = INVALID_HANDLE_VALUE;
HANDLE ReadHandle = INVALID_HANDLE_VALUE;
//First populate a list of plugged in devices (by specifying "DIGCF_PRESENT"), which are of the specified classGUID.
DeviceInfoTable = SetupDiGetClassDevs(&InterfaceClassGuid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
InterfaceDataStructure->cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
SetupDiEnumDeviceInterfaces(DeviceInfoTable, NULL, &InterfaceClassGuid, InterfaceIndex, InterfaceDataStructure);
ErrorStatus = GetLastError();
if(ERROR_NO_MORE_ITEMS == GetLastError()) //Did we reach the end of the list of matching devices in the DeviceInfoTable?
{ //Cound not find the device. Must not have been attached.
SetupDiDestroyDeviceInfoList(DeviceInfoTable); //Clean up the old structure we no longer need.
//return ;
}
//Now retrieve the hardware ID from the registry. The hardware ID contains the VID and PID, which we will then
//check to see if it is the correct device or not.
//Initialize an appropriate SP_DEVINFO_DATA structure. We need this structure for SetupDiGetDeviceRegistryProperty().
DevInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
SetupDiEnumDeviceInfo(DeviceInfoTable, InterfaceIndex, &DevInfoData);
//First query for the size of the hardware ID, so we can know how big a buffer to allocate for the data.
SetupDiGetDeviceRegistryProperty(DeviceInfoTable, &DevInfoData, SPDRP_HARDWAREID, &dwRegType, NULL, 0, &dwRegSize);
//Allocate a buffer for the hardware ID.
PropertyValueBuffer = (BYTE *) malloc (dwRegSize);
if(PropertyValueBuffer == NULL) //if null, error, couldn't allocate enough memory
{ //Can't really recover from this situation, just exit instead.
SetupDiDestroyDeviceInfoList(DeviceInfoTable); //Clean up the old structure we no longer need.
// return;
}
//Retrieve the hardware IDs for the current device we are looking at. PropertyValueBuffer gets filled with a
//REG_MULTI_SZ (array of null terminated strings). To find a device, we only care about the very first string in the
//buffer, which will be the "device ID". The device ID is a string which contains the VID and PID, in the example
//format "Vid_04d8&Pid_0040".
SetupDiGetDeviceRegistryProperty(DeviceInfoTable, &DevInfoData, SPDRP_HARDWAREID, &dwRegType, PropertyValueBuffer, dwRegSize, NULL);
// a ce stade dans PropertyValueBuffer, on a un REG_MULTI_SZ qui est un tableau de "null terminated strings".o find a device, we only care about the very first string in the
//buffer, which will be the "device ID". The device ID is a string which contains the VID and PID, in the example
//format "Vid_04d8&Pid_0040"
_tprintf(_TEXT("\t\t%s\n"), PropertyValueBuffer);
system("pause");
return 0;
} |
