QAction: No such file or directory

Question

I'm getting the error

QAction: No such file or directory

when I try to compile a project for plugin (C++ Library template). Weird, because I have a project for my app which also includes this header and there is no error. What might cause this?

Answer 1

For me I had some stale moc_ and ui_ files left over from compiling under a different version and configuration of Qt, so removing them solved the problem for me.

rm moc_* ui_* *.o

Answer 2

Make sure that you have the right include paths set up.

If you use QMake the *.pro should contain these settings if you want to include files from QtGui. They should be set by default but some templates may not set them.

CONFIG += qt
QT += gui

If you use another build system then make sure that you either use

#include <QtGui/QAction>

or you add $QTDIR/include/QtGui and not just $QTDIR/include to your include path