private void EnumerateDevices()
{
if (devices.Count > 0)
{
foreach (HidDevice dev in devices.Values)
{
dev.Dispose();
}
}
devices.Clear();
// Platform Device Enumeration
int index = 0;
NativeApi.SP_DEVICE_INTERFACE_DATA DeviceInterfaceData;
using (DeviceInfoHandle DeviceHandle = NativeApi.SetupDiGetClassDevs(ref HidGuid, null, 0,
NativeApi.DIGCF_DEVICEINTERFACE | NativeApi.DIGCF_PRESENT))
{
DeviceInterfaceData = new NativeApi.SP_DEVICE_INTERFACE_DATA();
DeviceInterfaceData.cbSize = Marshal.SizeOf(DeviceInterfaceData);
while (NativeApi.SetupDiEnumDeviceInterfaces(DeviceHandle, 0, ref HidGuid, index++, ref DeviceInterfaceData))
{
string devPath = GetInterfacePath(ref DeviceInterfaceData, DeviceHandle);
AddDeviceToList(devPath);
}
}
}
private string GetInterfacePath(ref NativeApi.SP_DEVICE_INTERFACE_DATA DeviceInterfaceData, DeviceInfoHandle DeviceHandle)
{
int requiredSize = 0;
NativeApi.SetupDiGetDeviceInterfaceDetail(DeviceHandle, ref DeviceInterfaceData, IntPtr.Zero, 0, ref requiredSize, IntPtr.Zero);
IntPtr DetailDataBuffer = Marshal.AllocHGlobal(requiredSize);
Marshal.WriteInt32(DetailDataBuffer, 4 + Marshal.SystemDefaultCharSize);
NativeApi.SetupDiGetDeviceInterfaceDetail(DeviceHandle, ref DeviceInterfaceData, DetailDataBuffer, requiredSize, ref requiredSize, IntPtr.Zero);
IntPtr pDevPath = new IntPtr(DetailDataBuffer.ToInt32() + 4);
String devPath = Marshal.PtrToStringAuto(pDevPath);
Marshal.FreeHGlobal(DetailDataBuffer);
return(devPath);
}
private void EnumerateDevices()
{
if (devices.Count > 0)
{
foreach (HidDevice dev in devices.Values)
{
dev.Dispose();
}
}
devices.Clear();
// Platform Device Enumeration
int index = 0;
NativeApi.SP_DEVICE_INTERFACE_DATA DeviceInterfaceData;
using (DeviceInfoHandle DeviceHandle = NativeApi.SetupDiGetClassDevs(ref HidGuid, null, 0,
NativeApi.DIGCF_DEVICEINTERFACE | NativeApi.DIGCF_PRESENT))
{
DeviceInterfaceData = new NativeApi.SP_DEVICE_INTERFACE_DATA();
DeviceInterfaceData.cbSize = Marshal.SizeOf(DeviceInterfaceData);
while (NativeApi.SetupDiEnumDeviceInterfaces(DeviceHandle, 0, ref HidGuid, index++, ref DeviceInterfaceData))
{
string devPath = GetInterfacePath(ref DeviceInterfaceData, DeviceHandle);
AddDeviceToList(devPath);
}
}
}
