QWidget::insertAction Attempt to insert null action at runtime - c++

Question

So, I'm trying to run my spreadsheet application in QT Creator and it compiles without errors, but when I try to run the application I get the following error QWidget::insertAction Attempt to insert null action. The problem is that I have no idea where the issue is coming from... The error is not appearing in the error section of QT Creator but in the little terminal created when running programs.
I have a createActions() function that initializes all the actions initilized in the header, maybe is coming from there?
The actions in the private part of the header look like this:
QAction *newAction;
QAction *openAction;
QAction *aboutQtAction;
QAction *closeAction;
QAction *exitAction;
QAction *selectAllAction;
QAction *showGridAction;
QAction *saveAction;
QAction *saveAsAction;
QAction *cutAction;
QAction *copyAction;
QAction *pasteAction;
QAction *deleteAction;
QAction *selectRowAction;
QAction *selectColumnAction;
QAction *findAction;
QAction *goToCellAction;
QAction *recalculateAction;
QAction *sortAction;
QAction *autoRecalcAction;
QAction *aboutAction;
Here's the function:
void MainWindow::createActions()
{
newAction = new QAction(tr("&New"), this);
newAction->setIcon(QIcon(":/images/avatar.jpeg"));
newAction->setShortcut(QKeySequence::New);
newAction->setStatusTip(tr("Create a new spreadsheet file"));
connect(newAction, SIGNAL(triggered()), this, SLOT(newFile()));
for (int i = 0; i < MaxRecentFiles; ++i) {
recentFileActions[i] = new QAction(this);
recentFileActions[i]->setVisible(false);
connect(recentFileActions[i], SIGNAL(triggered()),this, SLOT(openRecentFile()));
}
closeAction = new QAction(tr("&Close"), this);
closeAction->setShortcut(QKeySequence::Close);
closeAction->setStatusTip(tr("Close this window"));
connect(closeAction, SIGNAL(triggered()), this, SLOT(close()));
exitAction = new QAction(tr("E&xit"), this);
exitAction->setShortcut(tr("Ctrl+Q"));
exitAction->setStatusTip(tr("Exit the application"));
connect(exitAction, SIGNAL(triggered()),
qApp, SLOT(closeAllWindows()));
selectAllAction = new QAction(tr("&All"), this);
selectAllAction->setShortcut(QKeySequence::SelectAll);
selectAllAction->setStatusTip(tr("Select all the cells in the "
"spreadsheet"));
connect(selectAllAction, SIGNAL(triggered()),
spreadsheet, SLOT(selectAll()));
showGridAction = new QAction(tr("&Show Grid"), this);
showGridAction->setCheckable(true);
showGridAction->setChecked(spreadsheet->showGrid());
showGridAction->setStatusTip(tr("Show or hide the spreadsheet's "
"grid"));
connect(showGridAction, SIGNAL(toggled(bool)),
spreadsheet, SLOT(setShowGrid(bool)));
aboutQtAction = new QAction(tr("About &Qt"), this);
aboutQtAction->setStatusTip(tr("Show the Qt library's About box"));
connect(aboutQtAction, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
}
These actions, after being created, are added to the menus in the createMenus() function:
void MainWindow::createMenus(){
fileMenu = menuBar()->addMenu(tr("&File"));
fileMenu->addAction(newAction);
fileMenu->addAction(openAction);
fileMenu->addAction(saveAction);
fileMenu->addAction(saveAsAction);
separatorAction = fileMenu->addSeparator();
for (int i = 0; i < MaxRecentFiles; ++i)
fileMenu->addAction(recentFileActions[i]);
fileMenu->addSeparator();
fileMenu->addAction(exitAction);
...
Someone has any idea where this error is coming from?
Thanks!
Axel

Answer 1

In createActions(), you don't appear to be initializing openAction, saveAction, or saveAsAction - which you then insert into your menu. I'd guess that's the problem, unless you just didn't include the code initializing those particular actions.