MantisBT - VTK
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IDProjectCategoryView StatusDate SubmittedLast Update
0015013VTK(No Category)public2014-09-29 09:472016-08-12 09:55
ReporterB3nni 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version6.0.0 
Target VersionFixed in Version 
ProjectTBD
Typeincorrect functionality
Summary0015013: QMainMenu behaves weirdly if QVTKWidget is the central widget of QMainWindow
DescriptionAs already posted to http://stackoverflow.com/questions/25797486/qmainmenu-behaves-weirdly-if-qvtkwidget-is-the-central-widget-of-qmainwindow [^] (without any outcome).
Qt Version: 5.3.1
vtk Version: 6.1.0

The main menu in my Qt/vtk application is behaving weirdly if the central widget is QVTKWidget. Errornous clicking behaviour on the menu is as follows:

First click: pop down
Second click: pop up
Third click: does nothing
Fourth click: pop down again

Now this wouldn't be that bad, but the problem is that the states are remembered. So if the user clicks the menu twice -- i.e., closes it manually -- the next click on the menu bar will not do anything, even if he used other GUI element in between. This leads to an annoying user experience.

I created a minimal failing example:


#include <QAction>
#include <QApplication>
#include <QLabel>
#include <QMainWindow>
#include <QMenu>
#include <QMenuBar>

#include <QVTKWidget.h>

int main(int argc, char** argv)
{
  QApplication app(argc, argv);

  QMainWindow mainWindow;
  QMenu *menu = mainWindow.menuBar()->addMenu("TestMenu");
  QAction *action = menu->addAction("TestAction");

  // Setting the central widget to QVTKWidget, produces a weirdly
  // behaving menu bar:
  // First click: pop down
  // Second click: pop up
  // Third click: does nothing
  // Fourth click: pop down again
  mainWindow.setCentralWidget(new QVTKWidget());

  // Setting the central widget to any other QWidget, like QLabel, produces a
  // normally behaving menu bar:
  // First click: pop down
  // Second click: pop up
  // Third click: pop down again
  // mainWindow.setCentralWidget(new QLabel("TestLabel"));

  mainWindow.show();

  return app.exec();
}
Steps To Reproduce
Additional Information
Tagsqt, VTK
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Attached Files
Issue History
Date ModifiedUsernameFieldChange
2014-09-29 09:47B3nniNew Issue
2014-09-29 09:48B3nniTag Attached: qt
2014-09-29 09:48B3nniTag Attached: VTK
2015-03-26 23:59B3nniNote Added: 0034328
2016-07-06 16:47Berk GeveciStatusbacklog => expired
2016-08-12 09:55Kitware RobotNote Added: 0037342
2016-08-12 09:55Kitware RobotStatusexpired => closed
2016-08-12 09:55Kitware RobotResolutionopen => moved
2016-08-12 09:55Kitware RobotAssigned To => Kitware Robot

Notes
(0034328)
B3nni   
2015-03-26 23:59   
The bug does not occur any more in vtk 6.2.0 with Qt 5.4.1.
Close?
(0037342)
Kitware Robot   
2016-08-12 09:55   
Resolving issue as `moved`.

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