[Interest] Can't get menu with QWidgetAction to close after click! (Mac OS 10.6.8, Qt 4.8.3)

[Stephen Chu]

Are you sure you want a push button or a text entry field in the menu
from the menu bar?

It's, hmm, very different way of building an UI. Especially on a Mac.

On 10/9/12 2:29 PM, Jim Prouty wrote:
> In this test program (Qt 4.8.3 on Mac OS X 10.6.8), I've got one
> QMenu added to the menubar, and the menu has several QWidgetActions,
> including one that has a Done QPushButton and a QSpinBox.
>
> Having connected the QPushButton to a slot, I'm trying to get the
> menu to close up after the button has been clicked(), but the menu
> resolutely stays visible:
>
>
>
>
>
> Based on Google search results, I've programmed my _onPushButton()
> slot to call QMenu::close() on the added menu.
>
> I've tried using a queued connection hoping to do an end run around
> the event handling, but neither direct nor queued connections succeed
> in closing the menu.
>
> I've checked that the slot is getting called (qDebug() is printing).
>
> What am I doing wrong here?
>
> (And yes, I see that there are other menu issues with the program; Qt
> for Mac seems a bit neglected.)
>
> main.cpp:
>
> #include <QApplication> #include <QLabel> #include <QMainWindow>
> #include <QMenu> #include <QMenuBar> #include <QDebug> #include
> <QWidgetAction> #include <QPushButton> #include <QSpinBox> #include
> <QLayout> #include <QLabel>
>
> class SpinBoxAction : public QWidgetAction { Q_OBJECT public:
> explicit SpinBoxAction(const QString& title, QWidget *parent = 0);
>
> virtual QSize minimumSizeHint () const { return QSize(300,35); }
>
> protected: virtual QWidget * createWidget ( QWidget * parent );
> virtual void deleteWidget ( QWidget * widget ); private: QString
> pStr; QWidget * pWidget; };
>
> SpinBoxAction::SpinBoxAction(const QString& title, QWidget *parent) :
> QWidgetAction(parent), pStr(title), pWidget(NULL) {
>
> }
>
> QWidget* SpinBoxAction::createWidget(QWidget *parent) { if( pWidget
> == NULL ) { QWidget * widget = new QWidget (parent);
> widget->setSizePolicy(QSizePolicy::Preferred,
> QSizePolicy::Expanding);
> widget->setObjectName(QLatin1String("parentOfButtonAndSpinBox"));
>
> QSpinBox * spinBox = new QSpinBox(NULL);
> spinBox->setObjectName(QLatin1String("spinbox"));
> spinBox->setSizePolicy(QSizePolicy::Preferred,
> QSizePolicy::Expanding);
>
> spinBox->setMinimumSize(200,20);
>
> QPushButton * button = new QPushButton(pStr);
> button->setObjectName(QLatin1String("button"));
>
> QHBoxLayout * layout = new QHBoxLayout();
> layout->setObjectName(QLatin1String("horizontal layout"));
>
> layout->addWidget (button); layout->addWidget (spinBox);
>
> widget->setLayout (layout); pWidget= widget; } return pWidget; }
>
> void SpinBoxAction::deleteWidget(QWidget *widget) { if( widget ==
> pWidget ) pWidget= NULL; QWidgetAction::deleteWidget(widget); }
>
> //#include "main.h"
>
> class SpinApplication : public QApplication { Q_OBJECT public:
> explicit SpinApplication ( int & argc, char ** argv ); QMenu *
> _menu;
>
> public slots: void _onPushButton(bool b); };
>
> // main.cpp SpinApplication::SpinApplication ( int & argc, char **
> argv ) : QApplication(argc, argv), _menu(NULL) {
>
> }
>
> void SpinApplication::_onPushButton(bool b) { Q_UNUSED(b); if(_menu)
> { //_menu->hide(); // doesn't help bool closed= _menu->close();	//
> doesn't close the menu. qDebug() << "Closed:" << closed; } }
>
> int main( int argc, char* argv[]) { SpinApplication app(argc, argv);
>
> QMenu * menu= new QMenu("TEST"); app._menu = menu;
>
> // Widget Action 1 QLabel* lbl = new QLabel( "-----------TEST
> LABEL------------" ); lbl->setObjectName(QLatin1String("test
> label"));
>
> QWidgetAction* wAction = new QWidgetAction( menu );
> wAction->setDefaultWidget( lbl );
> wAction->setObjectName(QLatin1String("test label widget action"));
>
> menu->addAction( wAction );
>
> // Widget Action 2 QLabel* lbl2 = new QLabel( "TEST LABEL 2" );
> lbl2->setObjectName(QLatin1String("test label 2"));
>
> QWidgetAction* wAction2 = new QWidgetAction( menu );
> wAction2->setDefaultWidget( lbl2 );
> wAction2->setObjectName(QLatin1String("test label 2 widget
> action"));
>
> menu->addAction( wAction2 );
>
> // Widget Action 3 SpinBoxAction * spinBoxAction = new
> SpinBoxAction(QLatin1String("Done"),menu); menu->addAction(
> spinBoxAction );
>
> if( QWidget *widget= spinBoxAction->requestWidget(menu) ) { if(
> QPushButton *button = widget->findChild<QPushButton *>() ) {
> QObject::connect(button, SIGNAL(clicked(bool)), &app,
> SLOT(_onPushButton(bool)), Qt::QueuedConnection); } }
>
> // normal action QAction *naction= new QAction(QLatin1String("Normal
> menu item"), menu);
> naction->setObjectName(QLatin1String("naction")); menu->addAction(
> naction );
>
> QMainWindow* w = new QMainWindow(); w->menuBar()->addMenu( menu );
> w->show();
>
> app.exec(); }
>
> #include "main.moc"
>
>
> ========================================================================
>
>  Jim "How does it work?" Prouty
>
> Voice: (503) 620-3001, FAX: (503) 620-6754 Makers of IGOR Pro,
> scientific data analysis and graphing for Mac and PC
> http://www.wavemetrics.com
>
>
>
> _______________________________________________ Interest mailing
> list Interest at qt-project.org
> http://lists.qt-project.org/mailman/listinfo/interest
>