[solved] undefined reference to 'vtable for ...'

[Kxyu]

Try rebuilding your project (just remove the build directory). It is a moc issue

[lgeyer]

Such problems are usually solved by (manually) re-running qmake.

[lowee]

Oh great, you're right, I deleted the build folder and that's work pretty good !! I don't really know why it doesn't work at the first time, the MOC is the pre-compiled processor instructions ?

[lgeyer]

No, moc is the "Meta-Object Compiler":http://doc.qt.nokia.com/latest/moc.html.

[lowee]

Ok thanks, I just have two more questions ...

1. Do you know how can I get some values of a QComboBox (I tried with currentIndex() function and currentText but it doesn't really works...)

2. Which project can let me generate an application but without Qt development tool (like .exe and can be ran without problems...)

Anyway, I appreciate your help

PS: I'm a beginner with Qt ...

[lgeyer]

• currentIndex() and currentText() is the way to go. If they return invalid data there is most probably no item selected or the combo box is empty.
• Every single Application type (Qt Quick Application, Qt Gui Application, Mobile Qt Application, ...) generates a standalone binary (.exe). But you will have to distribute - as with every other non-Qt application - the "runtime dependencies":http://doc.qt.nokia.com/latest/deployment-windows.html along with your application.

[Rahul Das]

In addition you can try compiling statically. so that every libraries and dependencies packed into a single executable.

"Ref":http://doc.qt.nokia.com/stable/deployment.html

[lowee]

Thanks a lot guys! You're getting me out of every problems and I appreciate it !!

[Rahul Das]

You're welcome :) Happy coding :)

[andr1312e]

It may happen if you change file path and header and cpp files has different paths