DirectInput 3-7 test app, for testing dinputto8

dinput-test.cpp

#include <Windows.h>

#include <iomanip>
#include <iostream>

#pragma comment(lib, "dxguid.lib") 

#define DIRECTINPUT_VERSION 0x700
#include <dinput.h>

#include <wil/com.h>
#include <wil/win32_helpers.h>

static BOOL WINAPI DIEnumDevicesCallback(LPCDIDEVICEINSTANCE lpddi, LPVOID pvRef)
{
	GUID* pGuid = static_cast<GUID*>(pvRef);
	*pGuid = lpddi->guidInstance;

	std::wcout << "Found device: " << lpddi->tszProductName << std::endl << std::endl;

	return DIENUM_STOP;
}

BOOL WINAPI DIEnumDeviceObjectsCallback(LPCDIDEVICEOBJECTINSTANCE lpddoi, LPVOID pvRef)
{
	uint32_t* pEnumCount = static_cast<uint32_t*>(pvRef);
	std::wcout << (*pEnumCount)++ << ". dwOfs=" << static_cast<int32_t>(lpddoi->dwOfs) << ", tszName=" << lpddoi->tszName << ", dwType=" << std::hex << lpddoi->dwType << std::dec << std::endl;
	return DIENUM_CONTINUE;
}

HRESULT TestVersion(decltype(DirectInputCreateW) func, DWORD version)
{
	std::cout << "Testing version 0x" << std::hex << version << ":" << std::endl;

	wil::com_ptr_nothrow<IDirectInput> dinput;
	RETURN_IF_FAILED(func(GetModuleHandle(nullptr), version, dinput.put(), nullptr));

	// 2. Enumerate DirectInput devices and get the very first gamepad
	GUID instanceGuid(GUID_NULL);
	RETURN_IF_FAILED(dinput->EnumDevices(DIDEVTYPE_JOYSTICK, DIEnumDevicesCallback, &instanceGuid, DIEDFL_ATTACHEDONLY));
	if (instanceGuid == GUID_NULL)
	{
		return E_FAIL;
	}

	// Create a DirectInput device
	wil::com_ptr_nothrow<IDirectInputDevice> dinputDevice;
	RETURN_IF_FAILED(dinput->CreateDevice(instanceGuid, dinputDevice.put(), nullptr));

	std::cout << "Enumerating objects WITHOUT data format set" << std::endl;
	{
		uint32_t enumCount = 1;
		dinputDevice->EnumObjects(DIEnumDeviceObjectsCallback, &enumCount, DIDFT_ALL);
		std::cout << std::endl;
	}

	{
		DIOBJECTDATAFORMAT joystick[] = {
			{ &GUID_ZAxis, 0, DIDFT_AXIS|DIDFT_ANYINSTANCE, 0 },
			{ &GUID_XAxis, 12, DIDFT_AXIS|DIDFT_ANYINSTANCE, 0 },
			{ nullptr, DIJOFS_BUTTON(5), DIDFT_BUTTON|DIDFT_ANYINSTANCE, 0 },
			{ nullptr, DIJOFS_BUTTON(7), DIDFT_BUTTON|DIDFT_ANYINSTANCE, 0 },
			{ nullptr, DIJOFS_BUTTON(3), DIDFT_BUTTON|DIDFT_ANYINSTANCE, 0 },
		};

		const DIDATAFORMAT format = {
			sizeof(DIDATAFORMAT),
			sizeof(DIOBJECTDATAFORMAT),
			DIDF_ABSAXIS,
			sizeof(DIJOYSTATE),
			std::size(joystick),
			joystick
		};
		RETURN_IF_FAILED(dinputDevice->SetDataFormat(&format));
	}
	std::cout << "Enumerating objects WITH data format set" << std::endl;
	{
		uint32_t enumCount = 1;
		dinputDevice->EnumObjects(DIEnumDeviceObjectsCallback, &enumCount, DIDFT_ALL);
		std::cout << std::endl;
	}

	return S_OK;
}


int main(int argc, char* argv[])
{
	// 1. Create a DirectInput object
	wil::unique_hmodule dinputLib(LoadLibrary(TEXT("dinput")));
	RETURN_LAST_ERROR_IF_NULL(dinputLib);

	auto pDirectInputCreate = GetProcAddressByFunctionDeclaration(dinputLib.get(), DirectInputCreateW);
	RETURN_LAST_ERROR_IF_NULL(pDirectInputCreate);

	for (DWORD ver : { 0x300, 0x500, 0x50a, 0x5b2, 0x602, 0x61A, 0x700 })
	{
		TestVersion(pDirectInputCreate, ver);
		std::cout << std::endl;
	}

	return 0;
}