The very simple application posted below (it is a complete runnable example)
creates a window that puts up a menu on clicking in the window. If you select
"Open File..." it then puts up a QFileDialog to choose a file. Upon returning,
the window no longer appears to active. Experience with our real application
where we observe this behavior suggests that Qt thinks the window is still
active, but OS X does not. This causes other strange problems.
Application works as expected on Windows.
I am inclined to believe this is a Qt bug. But I would be interested to know
what others think, and if you might know of a work-around.
Thanks!
-John Weeks
#include <QApplication>
#include <QMainWindow>
#include <QMouseEvent>
#include <QFileDialog>
#include <QString>
#include <QDebug>
#include <QMenu>
#include <QAction>
class MainWindow : public QMainWindow
{
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
protected:
void mouseReleaseEvent(QMouseEvent * event);
private:
};
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent)
{
}
MainWindow::~MainWindow()
{
}
void MainWindow::mouseReleaseEvent(QMouseEvent * event)
{
QMenu menu;
menu.addAction("Open File...");
QAction * selectedAction = menu.exec(event->globalPos());
if (selectedAction)
{
QFileDialog::Options options = 0;
// options |= QFileDialog::DontUseNativeDialog;
QString fullQtPath = QFileDialog::getOpenFileName(NULL,
QStringLiteral("Dialog Caption"), QString(), QString(), nullptr, options);
qDebug() << fullQtPath;
}
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
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