private static extern Boolean HidD_GetAttributes(IntPtr hidHandle, out HID_ATTRIBUTES attributes);
private int HIDSearch(int max_try)
{
HIDInfoList.Clear();
//指定HID类的GUID
Guid guidHID = Guid.Empty;
HidD_GetHidGuid(ref guidHID);
//获取GUID类型设备信息指针 hDevInfo
IntPtr hDevInfo = IntPtr.Zero;
hDevInfo = SetupDiGetClassDevs(ref guidHID, 0, IntPtr.Zero, DIGCF.DIGCF_PRESENT | DIGCF.DIGCF_DEVICEINTERFACE);
////设备信息数据 devInfoData
SP_DEVICE_INTERFACE_DATA DeviceInterfaceData = new SP_DEVICE_INTERFACE_DATA();
DeviceInterfaceData.cbSize = (UInt32)Marshal.SizeOf(DeviceInterfaceData);
SP_DEVINFO_DATA strtInterfaceData = new SP_DEVINFO_DATA();
strtInterfaceData.cbSize = (UInt32)Marshal.SizeOf(strtInterfaceData);
SP_DEVICE_INTERFACE_DETAIL_DATA detailData = new SP_DEVICE_INTERFACE_DETAIL_DATA();
detailData.cbSize = (UInt32)Marshal.SizeOf(detailData);
//循环内所需数据
int device_found = 0;
UInt32 device_index = 0;
int device_max_try = max_try;
int bufferSize = 0;
IntPtr hidHandle = IntPtr.Zero;
while (device_max_try > 0)
{
device_max_try--;
if (SetupDiEnumDeviceInterfaces(hDevInfo, IntPtr.Zero, ref guidHID, device_index, ref DeviceInterfaceData))
{
SetupDiGetDeviceInterfaceDetail(hDevInfo, ref DeviceInterfaceData, IntPtr.Zero, 0, ref bufferSize, strtInterfaceData);
IntPtr detailDataBuffer = Marshal.AllocHGlobal(bufferSize);
Marshal.StructureToPtr(detailData, detailDataBuffer, false);
if (SetupDiGetDeviceInterfaceDetail(hDevInfo, ref DeviceInterfaceData, detailDataBuffer, bufferSize, ref bufferSize, strtInterfaceData))
{
string devicePathName = Marshal.PtrToStringAuto(detailDataBuffer + sizeof(UInt32));
hidHandle = CreateFile(devicePathName, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, IntPtr.Zero, OPEN_EXISTING, 0, IntPtr.Zero);
if (hidHandle != IntPtr.Zero && hidHandle.ToInt32() != -1)
{
HID_ATTRIBUTES hidAttributes = new HID_ATTRIBUTES();
HidD_GetAttributes(hidHandle, out hidAttributes);
byte[] pname = new byte[NAME_LENS];
HidD_GetProductString(hidHandle, pname, NAME_LENS);
byte[] vname = new byte[NAME_LENS];
HidD_GetManufacturerString(hidHandle, vname, NAME_LENS);
string str_pname = Encoding.Default.GetString(pname);
string str_vname = Encoding.Default.GetString(vname);
HIDINFO hidInfo = new HIDINFO();
hidInfo.handle = hidHandle;
hidInfo.path = devicePathName;
hidInfo.pid = hidAttributes.ProductID;
hidInfo.vid = hidAttributes.VendorID;
hidInfo.pname = str_pname.Replace("\0", "");
hidInfo.vname = str_vname.Replace("\0", "");
HIDInfoList.Add(hidInfo);
device_found++;
}
}
}
device_index++;
}
return(device_found);
}
