private void EnumerateDevices()
{
List <HidDevice> NewList = new List <HidDevice>();
// 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))
{
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);
try
{
NewList.Add(new HidDevice(devPath));
}
catch { }
Marshal.FreeHGlobal(DetailDataBuffer);
}
}
// Maintain Existing Devices
foreach (HidDevice HidDev in NewList)
{
if (DevList.Exists(new Predicate <HidDevice>(HidDev.Equals)))
{
NewList.RemoveAll(new Predicate <HidDevice>(HidDev.Equals));
NewList.Add(DevList.Find(new Predicate <HidDevice>(HidDev.Equals)));
}
else
{
HidDev.IsCheckedOut = false;
}
}
// Swap Device Lists
DevList = NewList;
//OnDeviceChange(this, new EventArgs());
}
private void EnumerateDevices()
{
List<HidDevice> NewList = new List<HidDevice>();
// 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))
{
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);
try
{
NewList.Add(new HidDevice(devPath));
}
catch { }
Marshal.FreeHGlobal(DetailDataBuffer);
}
}
// Maintain Existing Devices
foreach (HidDevice HidDev in NewList)
{
if (DevList.Exists(new Predicate<HidDevice>(HidDev.Equals)))
{
NewList.RemoveAll(new Predicate<HidDevice>(HidDev.Equals));
NewList.Add(DevList.Find(new Predicate<HidDevice>(HidDev.Equals)));
}
else
{
HidDev.IsCheckedOut = false;
}
}
// Swap Device Lists
DevList = NewList;
//OnDeviceChange(this, new EventArgs());
}
