Mobile and Embedded

bq. But how to show a user informative dialog boxes that disappear/invisible after 5 sec. create a pair of signal/slot that take the message text and time as arguments: @ public slots: void displayMessage(QString message, int seconds); @ The main class then displays the message and starts a timer that removes the message after the time elapses. Or you send one signal to display the text and later another signal to hide the text.

Not long ago I read the guidelines of Googles SDK and I cannot remember that there was something related written there. I think what you are asking for is not supported by Android - although your idea is not that bad. I clean up my SD card manually every few month after uninstalling applications. They all leave some garbage there.

You do not need a QBluetoothServiceInfo to open a connection. You only need the destination addressand either the port number or the service UUID. BluetoothService provides the address and the UUID - so you have already what you need. QBluetoothSocket::connectToService(const QBluetoothAddress & address, const QBluetoothUuid & uuid, OpenMode openMode = ReadWrite)

Hi, Did you install it ?

Hi, Because it's a generated file that you should never modify. What complains are you getting ?

sure.. ill check this and update in the header

Hey, that worked. Thanks!

Take a look at the QtMacExtras module and the cocoa platform plugins, they show it nicely

I found a solution. Please go to : http://qt-project.org/forums/viewthread/48250/

use "\n" or slot "append" =)

@Image { source: "foo.png" }@ will try to load "foo@2x.png" on iOS retina screens automatically, no need for custom logic there.

Maybe you have switched the Qt version in Kit settings? In Qt 4, QAction is part of QtGui module. In Qt 5, it is part of QtWidgets module. Best option is not to specify the module name when including the header.

Hi, Did you install the QtMacExtras module ?

AFAIK, X should pass the events to Qt where you can then handle them. If you want to handle X11 events in your application you have the x11EventFilter and x11ProcessEvent methods that you can reimplement.

Sure. However, I found another solution, which may be better in terms of security. When the app is first launched, I generate a UUID and store it in the app's settings file. The UUID stays the same and will be renewed only when the user reinstalls the app. So, I no longer need the MAC addresses. Since the settings file may be accessible on a rooted device, I don't use the UUID directly as the key to my SecureStore. Instead, I obtain the key by passing the UUID to a modified version of the bcrypt password hashing algorithm.

Dear SGaist, cybercatalyst, mrdebug, Thanks a lot for giving me the pointers to start with :) Cheers !

Hi Please make the following changes. void Window::openFile() { Comment the following code. /* QString path = QFileDialog::getOpenFileName(this, tr("Open PDF File"), /lastPath/"./", tr("PDF files (*.pdf)")); if (path.isEmpty()) return; qDebug() << "open file is executing"; char val = getchar(); qDebug() << "getchar executed"; */ Change the path variable value to "./somedocument.pdf" documentWidget->setDocument(path); hope this will help.

Thanks! But I had been try your suggestion... After search and researching on the web I found I solution in this post: "http://qt-project.org/forums/viewthread/45095":http://qt-project.org/forums/viewthread/45095