/// <summary>
/// Initializes a new instance of the <see cref="GorgonRawHIDInfo"/> class.
/// </summary>
/// <param name="deviceHandle">The device handle.</param>
/// <param name="hidPath">The hid path.</param>
/// <param name="className">Name of the class.</param>
/// <param name="description">The description.</param>
/// <param name="deviceInfo">The device information.</param>
internal GorgonRawHIDInfo(IntPtr deviceHandle, string hidPath, string className, string description, RID_DEVICE_INFO_HID deviceInfo)
{
Handle = deviceHandle;
HIDPath = hidPath;
DeviceClass = className;
Description = description;
ProductID = deviceInfo.dwProductId;
VendorID = deviceInfo.dwVendorId;
Version = deviceInfo.dwVersionNumber;
Usage = (HIDUsage)deviceInfo.usUsage;
UsagePage = (HIDUsagePage)deviceInfo.usUsagePage;
}
private bool Is3DxDevice(RID_DEVICE_INFO_HID hidInfo)
{
return(hidInfo.dwVendorID == LOGITECH_3DX_VID &&
hidInfo.usUsagePage == HID_USAGE_PAGE_GENERIC &&
hidInfo.usUsage == HID_USAGE_GENERIC_MULTIAXIS_CONTROLLER);
}
/// <summary>
/// Iterates through the list provided by GetRawInputDeviceList,
/// counting 3Dx devices and adding them to deviceList.
/// </summary>
/// <returns>The number of 3Dx devices found.</returns>
public int EnumerateDevices()
{
var NumberOfDevices = 0;
uint deviceCount = 0;
var dwSize = (Marshal.SizeOf(typeof(RAWINPUTDEVICELIST)));
if (GetRawInputDeviceList(IntPtr.Zero, ref deviceCount, (uint)dwSize) == 0)
{
var pRawInputDeviceList = Marshal.AllocHGlobal((int)(dwSize * deviceCount));
GetRawInputDeviceList(pRawInputDeviceList, ref deviceCount, (uint)dwSize);
for (var i = 0; i < deviceCount; i++)
{
uint pcbSize = 0;
var rid = (RAWINPUTDEVICELIST)Marshal.PtrToStructure(
new IntPtr((pRawInputDeviceList.ToInt32() + (dwSize * i))),
typeof(RAWINPUTDEVICELIST));
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICENAME, IntPtr.Zero, ref pcbSize);
if (pcbSize > 0)
{
var pData = Marshal.AllocHGlobal((int)pcbSize);
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICENAME, pData, ref pcbSize);
var deviceName = Marshal.PtrToStringAnsi(pData);
//If the device is identified as a HID device with usagePage 1, usage 8,
//create a DeviceInfo object to store information about it
if (rid.dwType == RIM_TYPEHID)
{
var dInfo = new DeviceInfo();
// Create an object to set the size in the struct. Then marshall it to a ptr to pass to RI.
var hidInfo = new RID_DEVICE_INFO_HID();
var dwHidInfoSize = Marshal.SizeOf(hidInfo);
hidInfo.cbSize = dwHidInfoSize;
var pHIDData = Marshal.AllocHGlobal(dwHidInfoSize);
Marshal.StructureToPtr(hidInfo, pHIDData, true);
var uHidInfoSize = (uint)dwHidInfoSize;
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICEINFO, pHIDData, ref uHidInfoSize);
// Marshal back to an object to retrieve info
hidInfo = (RID_DEVICE_INFO_HID)Marshal.PtrToStructure(pHIDData, typeof(RID_DEVICE_INFO_HID));
dInfo.deviceName = Marshal.PtrToStringAnsi(pData);
dInfo.deviceHandle = rid.hDevice;
//If it is a 3Dx device and it isn't already in the list,
//add it to the deviceList hashtable and increase the
//NumberOfDevices count
if (Is3DxDevice(hidInfo) && !deviceList.Contains(rid.hDevice))
{
Console.WriteLine("Using 3Dx device: " + deviceName);
NumberOfDevices++;
deviceList.Add(rid.hDevice, dInfo);
}
Marshal.FreeHGlobal(pHIDData);
}
Marshal.FreeHGlobal(pData);
}
}
Marshal.FreeHGlobal(pRawInputDeviceList);
return NumberOfDevices;
}
throw new ApplicationException("Error!");
}
/// <summary>
/// Iterates through the list provided by GetRawInputDeviceList,
/// counting 3Dx devices and adding them to deviceList.
/// </summary>
/// <returns>The number of 3Dx devices found.</returns>
public int EnumerateDevices()
{
int NumberOfDevices = 0;
uint deviceCount = 0;
int dwSize = (Marshal.SizeOf(typeof(RAWINPUTDEVICELIST)));
if (GetRawInputDeviceList(IntPtr.Zero, ref deviceCount, (uint)dwSize) == 0)
{
IntPtr pRawInputDeviceList = Marshal.AllocHGlobal((int)(dwSize * deviceCount));
GetRawInputDeviceList(pRawInputDeviceList, ref deviceCount, (uint)dwSize);
for (int i = 0; i < deviceCount; i++)
{
uint pcbSize = 0;
RAWINPUTDEVICELIST rid = (RAWINPUTDEVICELIST)Marshal.PtrToStructure(
new IntPtr((pRawInputDeviceList.ToInt32() + (dwSize * i))),
typeof(RAWINPUTDEVICELIST));
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICENAME, IntPtr.Zero, ref pcbSize);
if (pcbSize > 0)
{
IntPtr pData = Marshal.AllocHGlobal((int)pcbSize);
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICENAME, pData, ref pcbSize);
string deviceName = Marshal.PtrToStringAnsi(pData);
//If the device is identified as a HID device with usagePage 1, usage 8,
//create a DeviceInfo object to store information about it
if (rid.dwType == RIM_TYPEHID)
{
DeviceInfo dInfo = new DeviceInfo();
// Create an object to set the size in the struct. Then marshall it to a ptr to pass to RI.
RID_DEVICE_INFO_HID hidInfo = new RID_DEVICE_INFO_HID();
int dwHidInfoSize = Marshal.SizeOf(hidInfo);
hidInfo.cbSize = dwHidInfoSize;
IntPtr pHIDData = Marshal.AllocHGlobal(dwHidInfoSize);
Marshal.StructureToPtr(hidInfo, pHIDData, true);
uint uHidInfoSize = (uint)dwHidInfoSize;
GetRawInputDeviceInfo(rid.hDevice, RIDI_DEVICEINFO, pHIDData, ref uHidInfoSize);
// Marshal back to an object to retrieve info
hidInfo = (RID_DEVICE_INFO_HID)Marshal.PtrToStructure(pHIDData, typeof(RID_DEVICE_INFO_HID));
dInfo.deviceName = Marshal.PtrToStringAnsi(pData);
dInfo.deviceHandle = rid.hDevice;
//If it is a 3Dx device and it isn't already in the list,
//add it to the deviceList hashtable and increase the
//NumberOfDevices count
if (Is3DxDevice(hidInfo) && !deviceList.Contains(rid.hDevice))
{
Console.WriteLine("Using 3Dx device: " + deviceName);
NumberOfDevices++;
deviceList.Add(rid.hDevice, dInfo);
}
Marshal.FreeHGlobal(pHIDData);
}
Marshal.FreeHGlobal(pData);
}
}
Marshal.FreeHGlobal(pRawInputDeviceList);
return(NumberOfDevices);
}
else
{
throw new ApplicationException("Error!");
}
}
private bool Is3DxDevice(RID_DEVICE_INFO_HID hidInfo)
{
return hidInfo.dwVendorID == LOGITECH_3DX_VID &&
hidInfo.usUsagePage == HID_USAGE_PAGE_GENERIC &&
hidInfo.usUsage == HID_USAGE_GENERIC_MULTIAXIS_CONTROLLER;
}
