General and Desktop

@ChrisW67: I have tried this solution already. Calling sudo -l requests for sudo password.

It is actually the mechamism behind cross-thread signals and slots. However, only use QCoreApplication::postEvent, not the sendEvent variant.

That isn't standard functionality. It will take quite a bit of programming to get this to work properly.

[quote author="Plissken" date="1341420919"]I've created a stylesheet to create black line (actually, just the bottom border visible) for text. However, there is a gap between the baseline of the characters and the line itself. Is there anyway to shift the characters to rest right on the line?[/quote] Sure there is: try playing around with the padding. You can try setting the bottom padding to a negative value.

sorry this topic posted one year ago!!

tucnak: Resources are read only, there is no need to worry about them getting changed:-) Qt Creator plugins tend to each have their own set of resources. Since each plugin is essentially a library that seems to work fine:-)

I do understand French though the topic is not about knowing how to use queries it's how to compile the drivers of MySQL for QT, but thanks anyways. [quote author="issam" date="1341397726"]Hi dsylebee. If you understand french, see this simple tutorial : http://www.siteduzero.com/tutoriel-3-267200-maitrisez-les-bases-de-donnees-avec-qtsql.html good luck ![/quote]

Ok, I solved it by not using real checkboxes at all, now I'm just returning the correct checkbox-icon in data() and nothing for CheckStateRole. I had to connect the clicked-signal from the view with an own slot in my model which implements the checkbox-behaviour... If somebody has a better idea, Id appreciate to hear it ;) But for now this problem is solved...

If you want more control over how the UI elements are created you could just create them directly in your code; you don't have to use the designer. If you don't already have it, the book 'C++ GUI Programming with Qt4' covers this approach in some detail. More information here: http://www.qtrac.eu/marksummerfield.html

@Andre Thanks for your valuable reply, Sir. I am looking forward to this interesting environment :) @notgary Thanks for guidance, sir. As advised, I am going through Getting started, but when ever I am stuck, I will seek help. I have taken Qt as SDK and my project is a mini project in C++ for my academic purpose. Thanks :)

Hi, It seems that the problem may with the PATH variable or with the mingw installed with the QtSDK. I added the following path C:\QtSDK\QtSources\static\bin;C:\QtSDK\mingw\bin And when running minggw32-make, it first tries to run the uic.exe from the path C:\QtSDK\QtSources\4.8.1\bin, but these are actually reside in the directory C:\QtSDK\QtSources\static\bin , why this problem? may be we make qt from a different director?

So OK the moc does not preprocess my macro apparently, and therefore the Q_ENUMS does not know about MyEnum while the moc is preprocessing it. But what is the solution then? Bill

Great! If that solves the issue for you, please prepend "[Solved]" to topic's title.

[quote author="john_god" date="1341390413"]In windows to restrain the user to use only one application, you have to use a combination of admin policies and regedit options.[/quote]

[quote author="Andre" date="1341390491"]Back on topic: I don't think you'll see much happening. First of all, you completely overrode the painting of the whole dialog. So, perhaps you'll see a small dot, but not much else being painted. Make sure to (in this case: first) call the base implementation: @ QDialog::paintEvent(paintEvent); @ Then, on the dot you draw itself. I doubt you'll even see that. The problem is: you are painting it right at the mouse cursor. And what is that spot overdrawn with? Exactly: the mouse cursor. [/quote] Nice analysis Andre [quote author="W.K.S" date="1341338884"]Thanks to both of you. You're right koahnig - I failed to check that the paintEvent() is actually called and that's where the problem was. Thanks a lot :) [/quote] Now I am wondering why it might have worked ?

You're welcome. Feel free to prepend the post title with [Solved] (just edit your initial post), as an indication that your problem has been solved and that there is a solution inside.

Run your program and look at the output it generates to the console or debug window. You will find there is a message similar to this: bq. Object::connect: No such slot YourClass::onDeviceDiscovered(const QextPortInfo &) indicating that it is not working. Connections happen at run time not compile time. To write a slot you declare a function in a class derived from QObject and then you implement it. It's just a C++ member function. To make it a slot you simply add the "slots" pseudo-keyword to the relevant access specifier. Here is a simple example with a slot called setValue(int): http://qt-project.org/doc/qt-4.8/signalsandslots.html#a-small-example You need to declare YourClass::onDeviceDiscovered(const QextPortInfo &info) and provide an implementation. In that implementation you can update the combo box.