/* get device path */
private string GetPath(IntPtr hInfoSet, ref DeviceInterfaceData iface)
{
/* detailed interface information */
var detIface = new DeviceInterfaceDetailData();
/* required size */
uint reqSize = (uint)Marshal.SizeOf(detIface);
/* set size. The cbSize member always contains the size of the
* fixed part of the data structure, not a size reflecting the
* variable-length string at the end. */
/* now stay with me and look at that x64/x86 maddness! */
detIface.Size = Marshal.SizeOf(typeof(IntPtr)) == 8 ? 8 : 5;
/* get device path */
bool status = HIDNativeAPIs.SetupDiGetDeviceInterfaceDetail(hInfoSet, ref iface, ref detIface, reqSize, ref reqSize, IntPtr.Zero);
/* whops */
if (!status)
{
/* fail! */
throw new Win32Exception();
}
/* return device path */
return(detIface.DevicePath);
}
/* browse all HID class devices */
public static List <HIDInfo> BrowseHID()
{
/* hid device class guid */
Guid gHid;
/* list of device information */
List <HIDInfo> info = new List <HIDInfo>();
/* obtain hid guid */
HIDNativeAPIs.HidD_GetHidGuid(out gHid);
/* get list of present hid devices */
//var hInfoSet = GetClassDevs(gHid, (uint)DIGCF.DIGCF_PRESENT | (uint)DIGCF.DIGCF_DEVICEINTERFACE);
var hInfoSet = GetClassDevs(Guid.Empty, (uint)DIGCF.DIGCF_ALLCLASSES | (uint)DIGCF.DIGCF_DEVICEINTERFACE);
/* allocate mem for interface descriptor */
var iface = new DeviceInterfaceData();
/* set size field */
iface.Size = Marshal.SizeOf(iface);
/* interface index */
uint index = 0;
/* iterate through all interfaces */
while (HIDNativeAPIs.SetupDiEnumDeviceInterfaces(hInfoSet, 0, ref gHid, index, ref iface))
{
bool isWork = false;
HIDInfo hidInfo = new HIDInfo(hInfoSet, iface, out isWork);
if (isWork)
{
info.Add(hidInfo);
}
/* next, please */
index++;
}
/* clean up */
if (HIDNativeAPIs.SetupDiDestroyDeviceInfoList(hInfoSet) == false)
{
/* fail! */
//throw new Win32Exception();
}
/* return list */
return(info);
}
public HIDInfo(IntPtr _hidInfoSet, DeviceInterfaceData _iface, out bool isWork)
{
hidInfoSet = _hidInfoSet;
iface = _iface;
//Get HW Path
string devPath = GetPath(hidInfoSet, ref iface);
//Open HID HW
hidHWDev = new HIDHWDev(devPath);
isWork = false;
if (hidHWDev.OpenAsync())
{
hidInfoStruct = new HIDInfoStruct()
{
Manufacturer = GetManufacturer(hidHWDev.HIDHandel),
Product = GetProduct(hidHWDev.HIDHandel),
SerialNumber = GetSerialNumber(hidHWDev.HIDHandel),
HIDFullPath = devPath,
};
hidInfoStruct.HIDCompareStr = devPath.Split('&')[2];
HiddAttributtes hidAttr = new HiddAttributtes();
try
{
hidAttr = GetVidPid(hidHWDev.HIDHandel);
}
catch (Exception ex)
{
Utilities.Logger(HIDAPIs.LogHIDHWDev, $"GetVidPid Error {ex.Message}");
}
hidInfoStruct.Vid = hidAttr.VendorID;
hidInfoStruct.Pid = hidAttr.ProductID;
hidInfoStruct.OutputBuffSize = hidHWDev.OutputBuffSize;
hidInfoStruct.InputBuffSize = hidHWDev.InputBuffSize;
isWork = true;
}
}
public static extern bool SetupDiGetDeviceInterfaceDetail(
IntPtr lpDeviceInfoSet, ref DeviceInterfaceData oInterfaceData,
ref DeviceInterfaceDetailData oDetailData,
uint nDeviceInterfaceDetailDataSize, ref uint nRequiredSize,
IntPtr lpDeviceInfoData);
public static extern bool SetupDiEnumDeviceInterfaces(
IntPtr lpDeviceInfoSet, uint nDeviceInfoData, ref Guid gClass,
uint nIndex, ref DeviceInterfaceData oInterfaceData);