Qt.dll download. The Qt.dll file is a dynamic link library for Windows 10, 8.1, 8, 7, Vista and XP. You can fix The file Qt.dll is missing. And Qt.dll not found. Support for Symbian Qt on Symbian. Qt is an integral part of the Symbian platform. The latest Symbian Belle phones include Qt as part of their firmware, and earlier phones have Qt support pre-installed as well.
Download Qt Libraries For Symbian
QBluetoothZero is a 3rd party bluetooth library written on Qt supported on Symbian and Windows. Its architecture is based on S60 Platform: Bluetooth API Developer's Guide.
So the architecture was extracted from S60 bluetooth API, and also source code was used from the following examples:
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NOTE: for more detailed description of the the library's components please advise the documentation. Documentation can be found in this site QBluetoothZero Documentation. To download source code visit project page.
An application using QBluetoothZero can be found here QuteMessenger - A Qt application using QBluetoothZero Cone calculator.
Some code examples from the Nokia Wiki:
If compiled for Symbian and Carbide is used as IDE then we Freeze Exports (Project->Freeze Exports) and it is ready.If compiled for Windows (in case of Visual Studio 2008 as IDE) just compile and the .dll and .lib files will be generated.
It's also possible to build the library with Nokia Qt SDK 1.0. However, the Symbian SDK that comes with Nokia Qt SDK 1.0 does not have all the libraries required to build the library (eg. BluetoothEngineAPI). The options are 1) copy the missing files from the 5th Edition SDK, or 2) choose the standalone SDKs as the Qt Version when configuring a project (Symbian device target).
Possible build errors
This section provides answers to some questions that might arise when building the library.
Qt Creator doesn't find the Symbian SDK header files
Add this to the QBluetoothZero .pro file, just before the HEADERS declaration at the beginning of the file.
Compiler error in <obexbase.h></obexbase.h>, line 205: extra qualification 'CObex::' on member '!CancelObexConnection'.
Edit the obexbase.h file and remove the CObex:: qualifier.
Qt Creator complains about missing libraries
The solution found so far for S60 5th Edition SDK and Nokia Qt SDK 1.0 is to install the BluetoothEngineAPI files from the S60 3rd Edition FP2 plugin pack. For the S60 3rd Edition FP1 SDK, please search for the plugin pack specific for this SDK.
If Qt Creator complains about or , when using as target Qt devices (Nokia Qt SDK 1.0): The solution so far is to either use another SDK (as the 5th Edition SDK), or to copy the missing files from the 5th Edition SDK). The files are:
These files are located in epoc32releasearmv5lib of the SDK installation directory.
Qt Creator doesn't generate the .sis file for the library
No known solution so far. Even if having configured the build target to sign the file with a developer certificate, Qt Creator (Nokia Qt SDK 1.0) does not generate the sis file. It seems to be a bug in Qt Creator.
To make Qt Creator generate the .pkg file, add this to the QBluetoothZero.pro file at the end of the file:
Compiler errors when modifying the public API (any public method of QBluetoothZero classes), with Qt Creator
When modifying the public API in Symbian DLLs, it's necessary to freeze the API. Currently, Qt Creator does not do this, and there's no way to instruct it to make this step. This is a known Qt Creator bug (https://bugreports.qt-project.org/browse/QTCREATORBUG-772).
To freeze the API it's necessary to run it from the command line. Create a .bat file and place it in the same directory where the QBluetoothZero .pro file resides. Write the text below:
Set the EPOCROOT variable to the root of the Symbian SDK that is being used by the project (without the drive letter as in the example). For Nokia Qt SDK 1.0, this is sdk instalation folder'SymbianSDK. Then, proceed as this:
Use the output of the previous build
The following lines must be inserted in the .pro file of the project that is going to use the QBluetoothZero library.
If compiling for Symbian, add in symbian scope:
If compiling for Windows, add in win32 scope (supposing that the folder QBluetoothZero containing all the headers is in the same directory as the project that is going to use it):
The LIBS label sets the location of the file containing the .lib file, the INCLUDEPATH sets the location of the header file and HEADERS is used to specify the exact header to be included.
At any case, whenever one of the library classes is to be used, the developer must include .
Use the binaries
In bin folder you can find the library already compiled and ready to be used.
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The binary is a Shared Dll Library. It is installed once and can be used from multiple client programs without conflicts.
It looks good BUT it has some catches.
- the binaries are self signed so only the basic Capabiliites are supported: !LocalServices, !NetworkServices, !ReadUserData, !UserEnvironment, !WriteUserData, Location.
- The UID of the binary comes from the protected range. This means that it is only for testing and personal use. There is no guaranty that the UID will not confict with programs from other developers.
- In case someone wants to use the binary for an application that will be placed in Ovi Store, the binary has to be rebuild using a UID that the developer got a publisher.
In case you use Qt Creator, the following line:
must be changed into (just add a '$' character):
Discovering devices in range
QBtDeviceDiscoverer is used to inquire for bluetooth devices in range.- create new instance- call startDiscovery() to initiate inquiry- call getInquiredDevices() to retrieve the devices found so far or connect to SIGNAL newDeviceFound (QBtDevice) to be reported each time a device is found
Discovering services on a device
QBtServiceDiscoverer is used to inquire a remote device for the services it supports. After instantiation, user can call one of the 3 overloads of startDiscovery()- startDiscovery(QBtDevice*) : get all the device's supported services- startDiscovery(QBtDevice*,QBtConstants::!ServiceClass) : get all the device's supported services whose UUID equals to the given- startDiscovery(QBtDevice*,QBtConstants::!ServiceProtocol) : get all the device's supported services whose mechanism contains the service protocol given as argument
Use getInquiredServices() to get the services found so far or connect to the SIGNAL newServiceFound(const QBtDevice&, QBtService) to be reported each time a service is found.
Example: inquire a device (variable name remoteDevice) for all the Serial Port Protocols (SPP) it supports.
QBtServiceDiscoverer* serviceDiscoverer = new QBtServiceDiscoverer(this); connect (serviceDiscoverer, SIGNAL(newServiceFound(const QBtDevice&, const QBtService&)), this, SLOT (handlerFunction(const QBtDevice&, const QBtService& )));
serviceDiscoverer->startDiscovery (remoteDevice, QBtConstants::SerialPort);
Publish a service
QBtServiceAdvertiser is responsible to advertise a given bluetooth service.
After the instantiation of the class, startAdvertising(const QBtService&) can be called to start advertising the given bluetooth service. If successful then advertisingStarted(const QBtService&) signal is emitted.
NOTE: Currently there is no implementation on the Windows platform so after the instantiation of this object, any call to any function will emit an error(QBtServiceAdvertiser::FeatureNotSupported) signal.
QBtService newService; newService.setName(p_ptr->trService->getName()); newService.setClass(QBtConstants::SerialPort); newService.setPort(aChannel); newService.addProtocol(QBtConstants::L2CAP); newService.addProtocol(QBtConstants::RFCOMM);
Qt Library For Linux
QBtServiceAdvertiser* advertiser = new QBtServiceAdvertiser(this); advertiser->startAdvertising(newService);
Send/receive a file
QBtObjectExchangeClient is used to connect to a remote OBEX server and send or recieve files or raw data. Download driver pack 14 full iso.
Example connecting to a remote OBEX server. At successful connection user send a file to the server.
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Header
Source
OBEX server
QBtObjectExchangeServer is used to create an OBEX server. After instantiation user can call startServer(const QString&) to start the server. The feedback from the server's operations is given through SIGNALS.
Connecting to a Serial Port Server
In this case we use QBtSerialPortClient. Call connect(const QBtDevice&, const QBtService&) to connect to a remote Serial Port (SPP) Server. If successfull client can send data using sendData(const QString &) function and reports received data through SIGNAL dataReceived(const QString).
Creating a Serial Port Server
QBtSerialPortServer is used. Call startServer(const QString&) to start server and set the name of the publishing service and then wait for a client to connect. When a client is connected, it is reported through clientConnected(QBtAddress) SIGNAL. At this point server is able to send data through sendData(const QString) and the data received are reported through dataReceived(QString).
On the Windows implementation side, the bluetooth functions are provided by the Bluesoleil SDK. So in order to use the Windows implementation user must download the Bluesoleil SDK and Bluesoleil Drivers 6.4 and above. I know that this restriction is a drawback but I had a couple of months of experience on that SDK so it was the only chance for me to make a Windows implementation at this moment..but it works.
Qt Software Download
This project is licensed under the Apache License, Version 2.0.
A few code portions are used from other Nokia code examples thus in the root directory of the project there are these two files:stating the license of each.
Qt Library Download
The project is further developed to its project page.
Qt Library DownloadFavoritas37 00:29, 5 January 2012 (EET)Comments are closed.
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