Problem closing QDialog based tool style application

kegon

My application uses QDialog as the base class instead of QMainWindow and I set the Qt::Tool window flag. Now when I click on the close window button the window disappears but the program is still running. Now I can only quit by control click on the dock icon or through the screen menu bar.

I tried setting QApplication::setQuitOnLastWindowClosed(true), I tried calling QDialog::accept() on the closeEvent.

I want the program to quit when the window is closed. It seems a bit rude to call exit() in the close event.

On Mac, the default style is that applications don't close when the last window closes but I don't want that here.

System: OSX 10.11, Qt 5.7.1

SGaist

Hi,

Can you show a minimal sample code that shows that behaviour ?

kegon

Minimal example follows...

dialogtool.pro:

QT       += core gui
CONFIG   += qt c++11 warn_all
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET   = DialogTool
TEMPLATE = app
SOURCES += main.cc dialogtool.cc
HEADERS += dialogtool.h

main.cc:

#include <QApplication>
#include "dialogtool.h"

int main(int argc, char *argv[])
{
  QApplication a(argc, argv);
  a.setQuitOnLastWindowClosed(true);
  DialogTool w;
  w.show();

  return a.exec();
}

dialogtool.h:

#ifndef dt_h
#define dt_h

#include <QDialog>

class DialogTool : public QDialog
{
  Q_OBJECT
public:
  DialogTool();
  ~DialogTool();
};

#endif

dialogtool.cc:

#include "dialogtool.h"

DialogTool::DialogTool() : QDialog(nullptr, Qt::Tool) { }
DialogTool::~DialogTool() { }

SGaist

I can confirm the behaviour. However it indeed does look a bit strange. I'd recommend checking the but report system to see if there's anything related.