Not getting correct feature report - c++

Question

I have asked a similar question previously, but 1. no one answered and 2. it is a bit different. I have managed to get the correct file Path and created a handler by using CreateFile. I have then tried to use the HidD_GetFeature() function, but when I print out the report, it is all in symbols - not letters, numbers or readable sign. Does anyone know why it is doing that?? Here's my code:
/*****************************Mainframe.cpp**************************************/
#include"DeviceManager.h"
int main()
{
int iQuit;
DeviceManager deviceManager;
//deviceManager.ListAllDevices();
deviceManager.GetDevice("8888", "0308");
std::cin >> iQuit;
return 0;
}
/***********************************DeviceManager.h***************************/
#include <windows.h>
//#include <hidsdi.h>
#include <setupapi.h>
#include <iostream>
#include <cfgmgr32.h>
#include <tchar.h>
#include <devpkey.h>
extern "C"{
#include <hidsdi.h>
}
//#pragma comment (lib, "setupapi.lib")
class DeviceManager
{
public:
DeviceManager();
~DeviceManager();
void ListAllDevices();
void GetDevice(std::string vid, std::string pid);
HANDLE PSMove;
byte reportBuffer[57];
GUID guid;
private:
HDEVINFO deviceInfoSet; //A list of all the devices
SP_DEVINFO_DATA deviceInfoData; //A device from deviceInfoSet
SP_DEVICE_INTERFACE_DATA deviceInterfaceData;
SP_DEVICE_INTERFACE_DETAIL_DATA deviceInterfaceDetailedData;
};
/********************************DeviceManager.cpp*********************************/
#include"DeviceManager.h"
DeviceManager::DeviceManager()
{
HidD_GetHidGuid(&guid);
deviceInfoSet = SetupDiGetClassDevs(&guid, NULL, NULL, DIGCF_PRESENT|DIGCF_DEVICEINTERFACE); //Gets all Devices
}
DeviceManager::~DeviceManager()
{
}
void DeviceManager::ListAllDevices()
{
DWORD deviceIndex = 0;
deviceInfoData.cbSize = sizeof(deviceInfoData);
while(SetupDiEnumDeviceInfo(deviceInfoSet, deviceIndex, &deviceInfoData))
{
deviceInfoData.cbSize = sizeof(deviceInfoData);
ULONG tcharSize;
CM_Get_Device_ID_Size(&tcharSize, deviceInfoData.DevInst, 0);
TCHAR* deviceIDBuffer = new TCHAR[tcharSize]; //the device ID will be stored in this array, so the tcharSize needs to be big enough to hold all the info.
//Or we can use MAX_DEVICE_ID_LEN, which is 200
CM_Get_Device_ID(deviceInfoData.DevInst, deviceIDBuffer, MAX_PATH, 0); //gets the devices ID - a long string that looks like a file path.
/*
//SetupDiGetDevicePropertyKeys(deviceInfoSet, &deviceInfoData, &devicePropertyKey, NULL, 0, 0);
if( deviceIDBuffer[8]=='8' && deviceIDBuffer[9]=='8' && deviceIDBuffer[10]=='8' && deviceIDBuffer[11]=='8' && //VID
deviceIDBuffer[17]=='0' && deviceIDBuffer[18]=='3' && deviceIDBuffer[19]=='0' && deviceIDBuffer[20]=='8') //PID
{
std::cout << deviceIDBuffer << "\t<-- Playstation Move" << std::endl;
}
else
{
std::cout << deviceIDBuffer << std::endl;
}*/
std::cout << deviceIDBuffer << std::endl;
deviceIndex++;
}
}
void DeviceManager::GetDevice(std::string vid, std::string pid)
{
DWORD deviceIndex = 0;
deviceInfoData.cbSize = sizeof(deviceInfoData);
while(SetupDiEnumDeviceInfo(deviceInfoSet, deviceIndex, &deviceInfoData))
{
deviceInfoData.cbSize = sizeof(deviceInfoData);
ULONG IDSize;
CM_Get_Device_ID_Size(&IDSize, deviceInfoData.DevInst, 0);
TCHAR* deviceID = new TCHAR[IDSize];
CM_Get_Device_ID(deviceInfoData.DevInst, deviceID, MAX_PATH, 0);
if( deviceID[8]==vid.at(0) && deviceID[9]==vid.at(1) && deviceID[10]==vid.at(2) && deviceID[11]==vid.at(3) && //VID
deviceID[17]==pid.at(0) && deviceID[18]==pid.at(1) && deviceID[19]==pid.at(2) && deviceID[20]==pid.at(3)) //PID
{
DWORD deviceInterfaceIndex = 0;
deviceInterfaceData.cbSize = sizeof(deviceInterfaceData);
//HDEVINFO deviceInterfaceSet = SetupDiGetClassDevs(&guid, NULL, NULL, DIGCF_DEVICEINTERFACE);
if(SetupDiEnumDeviceInterfaces(deviceInfoSet, &deviceInfoData, &guid, deviceInterfaceIndex, &deviceInterfaceData))
{
deviceInterfaceData.cbSize = sizeof(deviceInterfaceData);
deviceInterfaceDetailedData.cbSize = sizeof(deviceInterfaceDetailedData);
DWORD requiredSize;
SetupDiGetDeviceInterfaceDetail(deviceInfoSet, &deviceInterfaceData, NULL, 0, &requiredSize, &deviceInfoData); //Gets the size
SetupDiGetDeviceInterfaceDetail(deviceInfoSet, &deviceInterfaceData, &deviceInterfaceDetailedData, requiredSize, NULL, NULL); //Sets the deviceInterfaceDetailedData
//std::cout << deviceInterfaceDetailedData.DevicePath << std::endl;
PSMove = CreateFile(deviceInterfaceDetailedData.DevicePath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
reportBuffer[0] = 0;
ULONG reportBufferLength = sizeof(reportBuffer);
HidD_GetFeature(PSMove, &reportBuffer, reportBufferLength);
std::cout << reportBuffer << std::endl;
//deviceInterfaceIndex++;
}
break;
}
deviceIndex++;
}
}
the HidD_GetFeature() function is at the bottom of this huge block of code.
UPDATE: I've managed to print the report now, but it is just a random 8 bit hex. Everytime I close the program down and run it again, it prints out different results. Why's that?

Answer 1

The ListAllDevices() function isn't displaying the info correctly because you're outputting a wchar_t* to std::cout. You need to use std::wcout for wide chars.