Latest Changes

• Fixed a bug where BeaconWatcher failed to start with the error WCL_E_BLUETOOTH_LE_START_WATCHER_FAILED on certain Bluetooth drivers.
• New error code: WCL_E_BLUETOOTH_LE_WATCHER_DRIVER_REJECTED_SCAN_PARAMS.

Bluetooth Framework

• C++ Edition: Fixed a critical bug in RfCommClient that prevented connections from being established, which previously resulted in the WCL_E_BLUETOOTH_UNABLE_SET_EVENT error.
• OBEX: Fixed a bug that caused the OBEX server data processors to not respond to OpenSession requests on certain platforms.
• .NET Edition: Fixed a bug that caused an ObjectDisposedException when closing the RfCommClient.

Bluetooth Framework

• Fixed the issue where client disconnection could cause an A/V or ObjectDisposedException on the latest Windows 11.

Bluetooth Framework

• Fixed the issue where client disconnection could cause an A/V or ObjectDisposedException on the latest Windows 11.

Serial Framework

• The wclBluetoothLeBeaconWatcher frames processing speed increased.
• C++ Edition: fixed bug with not connecting to BLED112 dongle on Windows 11.
• C++ Edition: fixed bug with not communicating with Toshiba stack on Windows 11.

Bluetooth Framework

• C++ Edition: fixed bug with connecting to a Serial Port on Windows 11.
• Minor Windows 11 related bugs fixed.

Serial Framework

The Wireless Communication Library now includes the Limited Access Feature (LAF) unlocking functionality. You can find more details about LAF in this short article. The LAF Manager requires the Bluetooth Framework 7.19.16, Serial Framework 7.8.6, Wi-Fi Framework 7.12.6.

• The new wclLafManager class that allows to unlock any Limited Access Feature (LAF).
• New error code: WCL_E_LAF_NOT_FOUND.
• New error code: WCL_E_LAF_OPEN_KEY_FAILED.
• New error code: WCL_E_LAF_KEY_NOT_FOUND.
• New error code: WCL_E_LAF_DLL_LOAD_FAILED.
• New error code: WCL_E_LAF_FUNC_NOT_FOUND.
• New error code: WCL_E_LAF_ACQUIRE_CONTEXT_FAILED.
• New error code: WCL_E_LAF_CREATE_HASH_FAILED.
• New error code: WCL_E_LAF_CRYPT_HASH_FAILED.
• New error code: WCL_E_LAF_GET_CRYPTED_HASH_FAILED.
• New error code: WCL_E_LAF_IDENTITY_NOT_FOUND.
• New error code: WCL_E_LAF_IDENTITY_READ_FAILED.
• New error code: WCL_E_LAF_IDENTITY_INVALID.
• New error code: WCL_E_LAF_IDENTITY_EMPTY.
• New error code: WCL_E_LAF_IDENTITY_INVALID_FORMAT.
• New error code: WCL_E_LAF_UNLOCK_REQUEST_FAILED.
• New error code: WCL_E_LAF_GET_REQUEST_STATUS_FAILED.
• New error code: WCL_E_LAF_LOCKED.
• New error code: WCL_E_LAF_UNAVAILABLE.
• New error code: WCL_E_LAF_STATUS_UNKNOWN.
• New error code: WCL_E_LAF_MANAGER_OPENED.
• New error code: WCL_E_LAF_MANAGER_NOT_OPENED.
• New error code: WCL_E_LAF_MANAGER_CLOSED.
• New error code: WCL_E_LAF_MANAGER_CREATE_INIT_EVENT_FAILED.
• New error code: WCL_E_LAF_MANAGER_CREATE_TERM_EVENT_FAILED.
• New error code: WCL_E_LAF_MANAGER_START_THREAD_FAILED.
• New error code: WCL_E_LAF_MANAGER_FEATURE_NOT_SUPPORTED.
• New error code: WCL_E_LAF_MANAGER_GET_LAF_LIST_FAILED.

Wireless Communication Library

The Wireless Communication Libary VCL Edition package now includes pre-compiled binaries for Lazarus/FreePascal. It is no available with any WCL License including the WCL Demo version.

Wireless Communication Library

• Fixed the incorrect OS version reading issue.
• Minor changes in connection parameters settings.
• .NET Edition: fixed the bug when changing connection parameters takes too long time.

Bluetooth Framework

• New error code: WCL_E_WIFI_ACCESS_DENIED_BY_SYSTEM.
• New error code: WCL_E_WIFI_ACCESS_DENIED_BY_USER.
• New error code: WCL_E_WIFI_HN_ACCESS_DENIED_BY_SYSTEM.
• New error code: WCL_E_WIFI_HN_ACCESS_DENIED_BY_USER.
• Windows 11 24H2 related fixes and updates.

Starting with Windows 11 24H2, Microsoft has modified the Wi-Fi security system, now requiring users to grant access to Location and Wi-Fi services. If the Wi-Fi Framework returns any of the following error codes: WCL_E_WIFI_ACCESS_DENIED_BY_SYSTEM, WCL_E_WIFI_ACCESS_DENIED_BY_USER, WCL_E_WIFI_HN_ACCESS_DENIED_BY_SYSTEM, WCL_E_WIFI_HN_ACCESS_DENIED_BY_USER you should prompt the user to enable access to Location and Wi-Fi for classic applications in the System Settings. The user must grant these permissions when requested to ensure your application can properly utilize Wi-Fi Framework functions.

Wi-Fi Framework

• Fixed the bug with changing scan parameters on Windows 11.
• Fixed the issue when changing BLE scan parameters on Windows 11 24H2 does not work.

Bluetooth Framework

• Correct BLE pairing termination when an application exits or when the Bluetooth Manager was closed.
• Fixed incorrect BLE pairing method selection when IO Capabilities set to iocapDisplayOnly or to iocapKeyboardOnly.

Bluetooth Framework

• Fixed the issue when connecting to a GATT-enabled device may fail with a timeout error too early.
• Fixed the issue that caused an application to freeze when calling Cancel() for asynchronous operations on Windows 11 23H2.
• Correct error code returning when a connection timed out.
• Correct error code returning when a connection was cancelled.
• Fixed the bug that causes the Access Violation exception during connecting to a paired GATT-enabled device on Windows 11.
• VCL Edition: Fixed C++ Builder building issue.

Bluetooth Framework

• Fixed the issue that caused an application to freeze when calling Cancel() for asynchronous operations on Windows 11 23H2.
• VCL Edition: Fixed C++ Builder building issue.
• The WiFiClient sample application has been updated.

Wi-Fi Framework

• Fixed the issue that caused an application to freeze when calling Cancel() for asynchronous operations on Windows 11 23H2.
• VCL Edition: Fixed C++ Builder building issue.

Serial Framework

• The critical bug has been fixed. The bug causes the Access Violation crash during BLE pairing.

Bluetooth Framework

• The new wclCriticalSection class has been added. The class implements the Critical Section synchronization primitive.
• The new wclMutex class has been added. The class implements the Mutex synchronization primitive.
• The new wclEvent class has been added. The class implements the Event synchronization primitive.
• The new wclAutoResetEvent class has been added. The class implements the Auto Reset Event synchronization primitive.
• The new wclManualResetEvent class has been added. The class implements Manual Reset Event synchronization primitive.

Bluetooth Framework

• The new wclCriticalSection class has been added. The class implements the Critical Section synchronization primitive.
• The new wclMutex class has been added. The class implements the Mutex synchronization primitive.
• The new wclEvent class has been added. The class implements the Event synchronization primitive.
• The new wclAutoResetEvent class has been added. The class implements the Auto Reset Event synchronization primitive.
• The new wclManualResetEvent class has been added. The class implements Manual Reset Event synchronization primitive.

Wi-Fi Framework

• The new wclCriticalSection class has been added. The class implements the Critical Section synchronization primitive.
• The new wclMutex class has been added. The class implements the Mutex synchronization primitive.
• The new wclEvent class has been added. The class implements the Event synchronization primitive.
• The new wclAutoResetEvent class has been added. The class implements the Auto Reset Event synchronization primitive.
• The new wclManualResetEvent class has been added. The class implements Manual Reset Event synchronization primitive.

Serial Framework

• Fixed the bug when the WCL_E_WINRT_ASYNC_OPERATION_TIMEOUT error returned too early.
• Fixed the bug when changing ScanInterval and ScanWindow properties of the wclBluetoothLeBeaconWatcher class to lower values raised an exception.

Bluetooth Framework

• wclSerialMonitor: The new OnStarted event that is called when serial devices monitoring is started.
• wclSerialMonitor: The new OnStopped event that is called when serial devices monitoring is stopped.
• wclUsbMonitor: The new OnStarted event that is called when USB devices monitoring is started.
• wclUsblMonitor: The new OnStopped event that is called when USB devices monitoring is stopped.
• .NET Edition: Fixed the bug when the default message processing for the wclSerialMonitor and the wclUsbMonitor was set to mpAsync.

Serial Framework

• The GATT server is now able to detect real client connections. Now you do not need to wait when a client subscribes, writes, or reads a characteristic.

Bluetooth Framework

• Fixed the bug in the C# GattClient sample application when the Write characteristic value code line was missed.
• GATT server write request processing speed was decreased; the code was completely reworked and optimized.
• .NET Edition: Fixed the Unity building issue when the IL2CPP compiling option is selected.

Bluetooth Framework

• Fixed the incorrect connectable and discoverable radio modes changing bug.
• Fixed the issue when a GATT server could receive data packets in incorrect order.
• Fixed the bug when a GATT server may hang on closing.
• The new Timestamp property was added to the wclGattLocalCharacteristicReadRequest class. This is a high-percision timestamp (with less than 1 ns resolution) that allows your application to know when the request was exactly received.
• The new Timestamp property was added to the wclGattLocalCharacteristicWriteRequest class. This is a high-percision timestamp (with less than 1 ns resolution) that allows your application to know when the request was exactly received. There is a known issue when a remote device writes too often to a GATT server; the GATT server may receive data packets in the wrong order. This timestamp will help your application to restore a data packet's order.

Bluetooth Framework

• The article about the OBEX protocol has been added.
• The article about the Wii Remote controller has been added.

• The Timeout parameter has been added to the WinRT WaitAsync method.
• Fixed the bug when classic Bluetooth devices returned during BLE discovering with the Microsoft Bluetooth driver.
• New error code: WCL_E_WINRT_ASYNC_OPERATION_TIMEOUT.
• The WCL_E_BLUETOOTH_LE_ADMIN_RIGHTS_REQUIRED error code has been removed.
• The WCL_E_BLUETOOTH_LE_CLIENT_NOT_CONNECTED error value has been changed from 0x000510E0 to 0x000510A7.
• Fixed the issue when connection to a Bluetooth GATT-enabled device can be blocked forever. The cause of this issue is usually a bug in a third-party Bluetooth driver or a Microsoft Bluetooth driver extension. Now, instead of blocking, the WCL_E_WINRT_ASYNC_OPERATION_TIMEOUT error code will be returned to indicate such a situation.
• VCL Edition: Fixed the problem when the demo version shows the demo warning dialog on the IDE startup; now it does not show the dialog when the IDE is running.
• C++ Edition: Fixed the freezing bug that appeared when starting the wclBluetoothLeAdvertiser.
• .NET Edition: Fixed the Access Violation error that appeared in the GetRemoteRssi method on Windows 11 when you build your application as x86 CPU (not AnyCPU) and run it on Windows 11 64 bits.

Bluetooth Framework

• The messaging subsystem now works on macOS.
• The Timeout parameter has been added to the WinRT WaitAsync method.
• New error code: WCL_E_WINRT_ASYNC_OPERATION_TIMEOUT.
• VCL Edition: Fixed the problem when the demo version shows the demo warning dialog on the IDE startup; now it does not show the dialog when the IDE is running.

Serial Framework

• The messaging subsystem now works on macOS.
• The Timeout parameter has been added to the WinRT WaitAsync method.
• New error code: WCL_E_WINRT_ASYNC_OPERATION_TIMEOUT.
• VCL Edition: Fixed the problem when the demo version shows the demo warning dialog on the IDE startup; now it does not show the dialog when the IDE is running.
• .NET Edition: Fixed the incorrect creation and connection date and time reading in the network list manager wclNlmNetwork class.

Wi-Fi Framework