/// <summary>
/// Requests to stop receiving notification messages when a device in an
/// interface class is attached or removed.
/// </summary>
///
/// <param name="deviceNotificationHandle"> handle returned previously by
/// RegisterDeviceNotification. </param>
internal void StopReceivingDeviceNotifications(IntPtr deviceNotificationHandle)
{
try
{
// ***
// API function
// summary
// Stop receiving notification messages.
// parameters
// Handle returned previously by RegisterDeviceNotification.
// returns
// True on success.
// ***
// Ignore failures.
DeviceManagement.UnregisterDeviceNotification(deviceNotificationHandle);
}
catch (Exception ex)
{
throw;
}
}
/** Code taken from www.endurance-rc.com/software.php **/
private void FindHid()
{
if (hid.deviceDetected) return;
DeviceManagement deviceManager = new DeviceManagement();
Boolean deviceFound = false;
String[] devicePathName = new String[128];
Guid hidGuid = Guid.Empty;
Int32 memberIndex = 0;
Int32 myProductID = 0x1299;
Int32 myVendorID = 0x0925;
Boolean success = false;
try
{
Hid.HidD_GetHidGuid(ref hidGuid);
// Fill an array with the device path names of all attached HIDs.
deviceFound = deviceManager.FindDeviceFromGuid(hidGuid, ref devicePathName);
// If there is at least one HID, attempt to read the Vendor ID and Product ID
// of each device until there is a match or all devices have been examined.
if (deviceFound)
{
memberIndex = 0;
do
{
hid.hidHandle = FileIO.CreateFile(devicePathName[memberIndex], 0, FileIO.FILE_SHARE_READ | FileIO.FILE_SHARE_WRITE, IntPtr.Zero, FileIO.OPEN_EXISTING, 0, 0);
if (!hid.hidHandle.IsInvalid)
{
hid.DeviceAttributes.Size = Marshal.SizeOf(hid.DeviceAttributes);
success = Hid.HidD_GetAttributes(hid.hidHandle, ref hid.DeviceAttributes);
if (success)
{
// Find out if the device matches the one we're looking for.
if ((hid.DeviceAttributes.VendorID == myVendorID) && (hid.DeviceAttributes.ProductID == myProductID))
{
hid.deviceDetected = true;
// Save the DevicePathName for OnDeviceChange().
hid.devicePathName = devicePathName[memberIndex];
}
else
{
// It's not a match, so close the handle.
hid.deviceDetected = false;
hid.hidHandle.Close();
}
}
else
{
// There was a problem in retrieving the information.
hid.deviceDetected = false;
hid.hidHandle.Close();
}
}
// Keep looking until we find the device or there are no devices left to examine.
memberIndex = memberIndex + 1;
}
while (!((hid.deviceDetected || (memberIndex == devicePathName.Length))));
}
if (hid.deviceDetected)
{
// Learn the capabilities of the device.
hid.Capabilities = hid.GetDeviceCapabilities(hid.hidHandle);
// Get handles to use in requesting Input and Output reports.
hid.readHandle = FileIO.CreateFile(hid.devicePathName, FileIO.GENERIC_READ, FileIO.FILE_SHARE_READ | FileIO.FILE_SHARE_WRITE, IntPtr.Zero, FileIO.OPEN_EXISTING, FileIO.FILE_FLAG_OVERLAPPED, 0);
hid.writeHandle = FileIO.CreateFile(hid.devicePathName, FileIO.GENERIC_WRITE, FileIO.FILE_SHARE_READ | FileIO.FILE_SHARE_WRITE, IntPtr.Zero, FileIO.OPEN_EXISTING, 0, 0);
// Flush any waiting reports in the input buffer. (optional)
hid.FlushQueue(hid.readHandle);
}
return;
}
catch (Exception ex)
{
return;
}
}