/// <summary>
/// Called when a WM_DEVICECHANGE message has arrived,
/// indicating that a device has been attached or removed.
/// </summary>
///
/// <param name="m"> a message with information about the device </param>
public void OnDeviceChange(Message m)
{
Tracer.Trace("OnDeviceChange() - m.WParam=" + m.WParam);
try
{
switch (m.WParam.ToInt32())
{
case DeviceManagement.DBT_DEVNODES_CHANGED:
// this one comes independent of the registration.
Tracer.Trace("DBT_DEVNODES_CHANGED");
break;
case DeviceManagement.DBT_DEVICEARRIVAL:
// you have to issue MyDeviceManagement.RegisterForDeviceNotifications() first to receive this notification.
// If WParam contains DBT_DEVICEARRIVAL, a device has been attached.
Tracer.Trace("A device has been attached.");
// Find out if it's the device we're communicating with.
if (MyDeviceManagement.DeviceNameMatch(m, myDevicePathName))
{
Tracer.Trace("OK: My device attached.");
}
break;
case DeviceManagement.DBT_DEVICEREMOVECOMPLETE:
// you have to issue MyDeviceManagement.RegisterForDeviceNotifications() first to receive this notification.
// If WParam contains DBT_DEVICEREMOVAL, a device has been removed.
Tracer.Trace("Warning: A device has been removed.");
// Find out if it's the device we're communicating with.
if (MyDeviceManagement.DeviceNameMatch(m, myDevicePathName))
{
Tracer.Trace("Warning: My device removed.");
// Set MyDeviceDetected False so on the next data-transfer attempt,
// FindTheHid() will be called to look for the device
// and get a new handle.
myDeviceDetected = false;
}
break;
}
}
catch (Exception ex)
{
Tracer.Error(ex);
throw;
}
}
/// <summary>
/// Handler for WndProc WM_DEVICECHANGE message.
/// </summary>
/// <param name="m"></param>
private void OnDeviceChange(Message m)
{
if (m.WParam.ToInt32() == DeviceManagement.DBT_DEVICEARRIVAL)
{
if (MyDeviceManagement.DeviceNameMatch(m, myDevicePathName))
{
Debug.WriteLineIf(WRITE_DEBUG_INFO, "Nintendo controller attached.");
}
}
else if (m.WParam.ToInt32() == DeviceManagement.DBT_DEVICEREMOVECOMPLETE)
{
if (MyDeviceManagement.DeviceNameMatch(m, myDevicePathName))
{
Debug.WriteLineIf(WRITE_DEBUG_INFO, "Nintendo controller removed.");
myDeviceDetected = false;
}
}
}
