Native Menu bar on macOS

sandy.martel23

How do I create an application that start with just a filled menu bar on macOS?

The following code works with Qt 4.8.7, 5.3.2 and 5.5.1 but does not with 5.6.1, 5.6.2 and 5.7.

#include <QApplication>
#include <QMenuBar>
#include <QMenu>

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);

	QMenuBar *m = new QMenuBar;
	QMenu *menu = new QMenu( "menu 1" );
	menu->addAction( "action 1" );
	menu->addAction( "action 2" );
	m->addMenu( menu );

	return a.exec();
}

No menu is shown with Qt 5.6.1 and 5.6.2.

m.sue

Hi,
you can try it this way:

QMenuBar *m = new QMenuBar(0);
QMenu *menu = 	m->addMenu( "menu 1" );
menu->addAction( "action 1" );
menu->addAction( "action 2" );

-Michael.

sandy.martel23

@m.sue
Explicitly specifying what is the default parent (0) ?
Nah, I tried, even if I couldn't see how that would help.

SGaist

Hi,

Which version of macOS are you running on ?

sandy.martel23

@SGaist
I tried 10.9, 10.11 and 10.12. This seems irrelevant to the problem.

sandy.martel23

workaround:

#include <QApplication>
#include <QMenuBar>
#include <QMenu>

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);

	QMenuBar *m = new QMenuBar;
	QMenu *menu = new QMenu( "menu 1" );
	menu->addAction( "action 1" );
	menu->addAction( "action 2" );
	m->addMenu( menu );
	
	m = new QMenuBar; // <-- Qt5.6, this seems to force the previous menu to show up
	m->deleteLater();

	return a.exec();
}

m.sue

@sandy.martel23 said in Native Menu bar on macOS:

even if I couldn't see how that would help

I did just copy what works here.
Maybe the Application needs to have a QMainWindow. At least, we call the code inside a QMainWindow derived class.
-Michael.

sandy.martel23

@m.sue
Yes Qt5 seems to require a window to show up as the application starts. Anyway, my workaround works.

sandy.martel23

https://bugreports.qt.io/browse/QTBUG-57072