public static IEnumerable <SynDevice> FindDevices(this ISynAPI synApi, ConnectionType connectionType, DeviceType deviceType)
{
int handle = 0;
var devices = new List <SynDevice>();
while (true)
{
try {
synApi.FindDevice((int)connectionType, (int)deviceType, ref handle);
} catch (FileNotFoundException) {
return(devices);
}
synApi.CreateDevice(handle, out SynDevice device);
devices.Add(device);
}
}
public void WorkLoop()
{
try {
synapi = new SynAPI();
} catch (COMException e) {
// COMException here indicates that SynAPI is not installed.
// Throw an exception to indicate this to the caller.
throw new COMInitializationFailedException("Synaptics driver version incorrect or not installed", e);
}
synapi.Initialize();
synapi.SetEventNotification(apiEvent.SafeWaitHandle);
while (true)
{
var deviceHandlers = EnumerateDevices()
.Select(DeviceHandler.Create)
.ToList();
DevicesEnumerated?.Invoke(deviceHandlers.Count);
var waitHandles = deviceHandlers
.Select(handler => handler.Event)
.Append(apiEvent)
.ToArray();
while (true)
{
var handleIdx = WaitHandle.WaitAny(waitHandles);
if (handleIdx < deviceHandlers.Count)
{
// Handle packets from this device.
deviceHandlers[handleIdx].HandlePackets();
}
else
{
// Reinitialize devices.
Console.WriteLine("Reinitializing devices.");
break;
}
}
deviceHandlers.ForEach(device => device.Dispose());
}
}
