[vtkusers] vtkMFCWindow: new and delete problems

Sun Oct 15 18:37:26 EDT 2006

Thank you for your response on this. However, the approach you suggest, that's exactly what i have done. In fact it also happens when i place both the new and the delete command directly after eachother, the same thing happens... I might try a rebuild...

Thanks anyway

----- Original Message ----
From: John Platt <jcplatt at dsl.pipex.com>
To: echinococcus Multilocularis <lintworm2 at yahoo.co.uk>
Cc: vtkusers at vtk.org
Sent: Monday, 16 October, 2006 12:27:05 AM
Subject: RE: [vtkusers] vtkMFCWindow: new and delete problems

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Try creating a new window in OnInitDialog()
and delete in ON_WM_DESTROY handler. You could also look at the example Examples\GUI\Win32\vtkMFC\vtkDLG.

HTH

John.

-----Original Message-----

From: echinococcus Multilocularis
[mailto:lintworm2 at yahoo.co.uk] 

Sent: 15 October 2006 21:00

To: John Platt

Subject: Re: [vtkusers]
vtkMFCWindow: new and delete problems

I am building a dialog
based program, and not using SDI, nor MDI.

Thank you for your
response.

Sincerely,

Han

-----
Original Message ----

From: John Platt <jcplatt at dsl.pipex.com>

To: echinococcus Multilocularis <lintworm2 at yahoo.co.uk>

Sent: Sunday, 15 October, 2006 9:31:13 PM

Subject: RE: [vtkusers] vtkMFCWindow: new and delete problems

If you
are using the document view architecture, you would normally let the document
create the view through an appropriate document template. SDI & MDI
projects will do this automatically for you. If you look at a typical CView
derived class you will see that the constructor is protected preventing the
kind of operation you are attempting.

HTH

John.

-----Original Message-----

From: vtkusers-bounces+jcplatt=dsl.pipex.com at vtk.org
[mailto:vtkusers-bounces+jcplatt=dsl.pipex.com at vtk.org] On Behalf Of echinococcus Multilocularis

Sent: 15 October 2006 16:15

To: vtkusers at vtk.org

Subject: [vtkusers] vtkMFCWindow:
new and delete problems

Hello,

I have restarted working with vtk, this time under windows, M$ VC++ 6.0. I have
vtk 5.0.2 installed, built in the release with symbols mode, on a windows 2000
machine. I want to use the MFC functionalities, and thus i looked into the
examples on MFC. I have started my own project and use the example to find the
nesecary steps.

So far so good. However, when want to create a vtkMFCWindow in debug-mode, and
delete it later on, so like this:

    m_pMFCWindow = new
vtkMFCWindow(this->GetDlgItem(DISPLAYFRAME));

    delete m_pMFCWindow;

I get a dialog telling me that a debug assertion failed. specifically it tells
me that it stops on:

    pHead->nBlockUsed == nBlockUsed

Furthermore i get a warning:

    Warning: calling DestroyWindow in CWnd::~CWnd; OnDestroy or
PostNcDestroy in derived class will not be called.

Again, all of this is only in debug mode. I know that i link the vtk library in
release mode w/ symbols on my program, can that be the problem? When i run my
program in Release mode, obviously i don't get the debug assertion failed
dialog. 

How do you create and destroy an object of the type vtkMFCWindow in a correct
way?

TIA!

Han

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