[Insight-users] Display image with ITK+VTK in SDI Applica tion

Fri May 12 04:50:10 EDT 2006

Hi Alexander,

In which circumstances does the assertion show up? It would be useful if you
could have a look at the call stack to see where the error comes from. This
seems to come from an error with pointers, but without a piece of code or
more information is difficult to tell.

Regards

Iván

   _____  

De: Alexander.Wang [mailto:zjjywmy at 163.com] 
Enviado el: viernes, 12 de mayo de 2006 4:50
Para: iván macía
CC: insight-users 
Asunto: Re: RE: Re: [Insight-users] Display image with ITK+VTK in SDI
Applica tion

Hi Iván,

Thanks for your help. I have replaced the version of ITKCommon.dll and very
happy to see that exception never occurs again. However, anther error
appears which says:

Debug assertion failed!
Program:...\..\..\***.exe
File:dbgheap.c
Line:1011
Expresion:_CrtIsValidHeapPointer(pUserData)

For your information on how your program can cause an assertion
failure,see the Visual C++ documentations on asserts.

I google to find some related info. They said,

(1)This is a problem with fltk.
I suppose you are running the example in debug version.
By default ITK is using the release version of fltk libraries so if you run
the example in debug it will fail.
Try to run it in Release mode and that should work.
If you want to use the debug version you could modify the project
options by hand
in VC++ and replace fltk.lib by fltkd.lib, fltkgl.lib by fltkgld.lib
...etc...

Julien
------>But I don't use fltk in this program, though i compiled that before.

(2)If you are developing multithread application, be sure to link it with
the correct runtime library(/MD, /MT). That what "The pointer MUST come from
the 'local' heap." means.
Check what "runtime library" you use. It should be "Multithreaded (debug)
DLL"

Roman
------>I checked that the setting of "runtime library" is right.

Could you or anybody else give me some advice.

Thanks for attention!

   Alexander

   _____  

-----原始邮件-----
发件人:"Iván Macía" 
发送时间:2006-05-11 16:03:53
收件人:"'Alexander.Wang'" ,"'karthik krishnan'" 
抄送:"'insight-users'" 
主题:RE: Re: [Insight-users] Display image with ITK+VTK in SDI Applica tion

Hi Alexander,

Does this error always show up in Debug mode? Are you using ITK with dynamic
libraries? If so this could be due to your application accessing the wrong
version of itkCommon.dll (accessing Release version instead of Debug), as
both have the same name. This happened to me before.

Hope that helps 

Iván 

   _____  

De: insight-users-bounces+imacia=vicomtech.es at itk.org
[mailto:insight-users-bounces+imacia=vicomtech.es at itk.org] En nombre de
Alexander.Wang
Enviado el: jueves, 11 de mayo de 2006 9:51
Para: karthik krishnan
CC: insight-users
Asunto: Re: Re: [Insight-users] Display image with ITK+VTK in SDI Applica
tion

Hi,

Thanks for your warmly help. But it seems not because of the filename's
slashes. When i change the filename as the method your proposed, the
exception was thrown out as before. And further more, i succeed in
displaying image in Win32 console application, using both '\' and '/'. So i
think the bug lies somewhere esle.
Thanks again and i'll appreciate your further help!

   _____  

-----原始邮件-----
发件人:"Karthik Krishnan" 
发送时间:2006-05-10 23:11:42
收件人:"Alexander.Wang" 
抄送:insight-users at itk.org
主题:Re: [Insight-users] Display image with ITK+VTK in SDI Applica tion

On Wed, 2006-05-10 at 22:07 +0800, Alexander.Wang wrote:

> Hi users,

>  

> I recently started working on ITK, and I want to display images in

> windows using SDI Application. But there is some problem. When the

> Update() function of imagereader is executing, an exception is thrown

> out which says" Unhandles exception in ***.exe (KERNEL32.DLL):

> 0xE06D7363: Microsoft C++ Exception". Does anybody could give me some

> help? Thanks in advance. 

>  

> Sincerely, Alexander

> CString strFile="";

> char szFilter[]="bmp文件(*.bmp)|*.bmp|All files(*.*)|*.*||";

> CFileDialog dlg(TRUE,"bmp",NULL,OFN_HIDEREADONLY|

> OFN_OVERWRITEPROMPT,szFilter,this);

> dlg.m_ofn.lpstrInitialDir=".";

> 

> if(dlg.DoModal()==IDOK)

> {

>  strFile=dlg.GetPathName();

> }

> 

> imageReader2D_1->SetFileName( strFile );

> 

I suspect the filename's slashes are getting escaped. It should end up

looking like c:/foo/foo.png or like "c:\\foo\\foo.png" You could use

itksys to convert these paths from the native windows style paths.

#include "itksys/SystemTools.hxx"

std::string fname = strFile

itksys::SystemTools::ConvertToUnixSlashes(fname);

if (!itksys::SystemTools::FileExists(fname.c_str()))

  {

  std::cerr << fname << " doesn't exist.. check again" << std::endl;

  }

> //Exception thrown out when executing this expression

> imageReader2D_1->Update();

> 

> vtkImageViewer* viewer=vtkImageViewer::New();

> vtkRenderWindowInteractor*

> ImgRenderWindowInteractor=vtkRenderWindowInteractor::New();

> 

> connector->SetInput(imageReader2D_1->GetOutput());

>  

> HWND hwnd = this->GetSafeHwnd();

> 

> viewer->SetParentId(hwnd);

> viewer->SetPosition(0,0);

> viewer->SetSize(512,512);

> viewer->SetupInteractor(ImgRenderWindowInteractor);

>  

> viewer->SetInput(connector->GetOutput());

> viewer->Render();

> 

> viewer->SetColorWindow(255);

> viewer->SetColorLevel(128);

> ImgRenderWindowInteractor->Start();

> 

> //Code End

> 

> 

> 

> 

> 

> 

> 

> 

> 

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