Hide OSX menu bar from Qt Application?

[fhdns]

I want to hide OSX Menu bar and OSX Dock panel. I tried to use this code:

int main(int argc, char *argv[]) {
  QApplication app(argc, argv);
  QDialog* dlg = new QDialog();
  QPushButton* btn = new QPushButton(this);
	connect(btn, &QPushButton::clicked, [this](){
  	[NSApp setPresentationOptions: [NSApp presentationOptions] | NSApplicationPresentationHideMenuBar | NSApplicationPresentationHideDock];
	})
	dlg->show();
  return app.exec();
}

This code hides Dock panel, but doesn't hide Menu bar. by experimentation it was found that the menu does not disappear because Application launched as agent with Info.plist option:

		<key>LSUIElement</key>
		<string>1</string>

If I delete LSUIElement, OSX Dock and Menu bar will be hided, but I don't want that Application has been shown in Dock.

I don't want to use full screen mode dlg->setFullscreen() bexause it creates new OSX screen.

How to doesn't show Application in Dock and hide OSX Menu Bar and Dock panel when Application is active?

[SGaist]

Hi,

Out of curiosity, can you describe what your application does that it needs all of these elements hidden ?