Error QApplication: no such file or directory

Question

I have installed C++SDK that have Qt but when I try compiling a code linking QApplication it gives me the error:

Error QApplication: no such file or directory
         


        

Answer 1

In Qt5 you should use QtWidgets instead of QtGui

#include      // incorrect in QT5
#include     // correct in QT5

Or

#include     // incorrect in QT5
#include     // correct in QT5