internal void Init(string path, WinHidDevice device)
{
IntPtr handle = NativeMethods.CreateFileFromDevice(path, NativeMethods.EFileAccess.Read | NativeMethods.EFileAccess.Write, NativeMethods.EFileShare.All);
if (handle == (IntPtr)(-1))
{
throw new IOException("Unable to open HID class device.");
}
_device = device;
_handle = handle;
HandleInitAndOpen();
}
protected override bool TryCreateDevice(object key, out HidDevice device, out object completionState)
{
string path = (string)key; var hidDevice = new WinHidDevice(path);
IntPtr handle = NativeMethods.CreateFileFromDevice(path, NativeMethods.EFileAccess.None, NativeMethods.EFileShare.All);
device = null; completionState = null; if (handle == (IntPtr)(-1))
{
return(false);
}
bool ok = false;
try { ok = hidDevice.GetInfo(handle); } catch { }
if (!ok)
{
NativeMethods.CloseHandle(handle); return(false);
}
device = hidDevice; completionState = handle;
return(true);
}