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Development: Runtime Error with QAction in OMEdit

#3963  Permalink Top

Development: Runtime Error with QAction in OMEdit

Dec-24-13 12:47:03

Hi!

I want to implement a new feature, that will show/hide annotations in text mode.
For this I wanted to add a toggle button next to mpConnectModeAction.

So I added in MainWindow.h line 241:

Code:

  QAction *mpAnnotationVisibleAction;

and in MainWindow.cpp line 1819:

Code:

  mpAnnotationVisibleAction = new QAction(QIcon(":/Resources/icons/connect-mode.png"), tr("Show/hide annotations"), mpShapesActionGroup);

  connect(mpAnnotationVisibleAction, SIGNAL(triggered()), SLOT(toggleShapesButton()));

(For this first test the icon is the same one).

and in MainWindow.cpp line 2098:

Code:

  mpShapesToolBar->addAction(mpAnnotationVisibleAction);

OMEdit compiles fine in my Eclipse environment, but I receive an runtime error at startup (splash screen)!

In a second step, I also implemented the function

Code:

QAction* MainWindow::getAnnotationVisibleAction()

{

  return mpAnnotationVisibleAction;

}

...with the same result (runtime error at OMEdit startup)

I really have no idea, what is going on there!
Do you have an idea? - Thank you very much!

And Merry Christmas!!!

Best Regards
Jan

#3967  Permalink Top

Re: Development: Runtime Error with QAction in OMEdit

Dec-24-13 19:39:41

The crash is because of MainWindow.cpp line 1441,

Code:

GraphicsView *pGraphicsView = mpModelWidgetContainer->getCurrentModelWidget()->getDiagramGraphicsView();

OMEdit preserves the user customizations & you have connect mode enabled so when OMEdit starts it triggers the toggleShapesButton SLOT.
Since there is no ModelWidget available so,

Code:

mpModelWidgetContainer->getCurrentModelWidget();

returns 0. You should check it before asking for the DiagramGraphicsView instance.

BTW, why do you want to make show/hide annotations part of toggle Shapes? It should be an option in the Options Dialog not in the toolbar.

Adeel.

#3969  Permalink Top

Re: Development: Runtime Error with QAction in OMEdit

Dec-24-13 23:01:09

Hi Adeel,

thank you for your quick response. Cause this thing really bugs me...

Sadly your suggested fix isn't working.
I tried it with:

Code:

  if (mpModelWidgetContainer->getCurrentModelWidget()==0)

    return; // OMEdit is starting up

an even commented out the whole "cancel connection if another tool is chosen"-block.
...with no success at all.

I mean if I would know at which code line OMEdit crashes exactly, I could debug it by myself.
But I just run the OMEdit.exe and receive a Windows message, that the programm isn't working any longer.

Is there a possibility to setup the Eclipse debugger for OMEdit?
Right now, the green "Run As..." button and the debug button is not working.

The intension was to have this "show/hide annotations" feature very quickly available.
In the shaps toolbar it might be the wrong place, but I would prefere to place it in a toolbar in general.

Best Regards
Jan

#3970  Permalink Top

Re: Development: Runtime Error with QAction in OMEdit

Dec-25-13 02:20:08

You can configure it in Eclipse but you need to install CDT with mingw tool chain. MDT doesn't provide such features.

Why don't you use Qt Creator for debugging?

Do a make clean and use GDB to find out the exact location of the bug.

Adeel.

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