Exceptions

  • Thread starter Thread starter Nils
  • Start date Start date
N

Nils

Hi,
sometime the following line produces an exception:
((CMessageDialog*)vec->at(0))->EndDialog(1);
Now I want to catch this Exception, tried it with c++ and mfc exception
handling, like:
C++ in MFC

try
{
((CMessageDialog*)vec->at(0))->EndDialog(1);
}
catch(CException *e)
{

}
---------------------------------------------------------
MFC Makro
TRY
{
((CMessageDialog*)vec->at(0))->EndDialog(1);
}
CATCH(CNotSupportedException, pEx)
{
}
END_CATCH
The Debugger still shows exceptions but never enters the chatch area.....

Can anyone please help me, why the exception is not catched?

Thank you
 
Nils said:
Hi,
sometime the following line produces an exception:
((CMessageDialog*)vec->at(0))->EndDialog(1);
Now I want to catch this Exception [...]
Click to expand...


The question would be: What of this line
produces the exception?
From what I see it could either be 'at()'
or 'EndDialog()'. If it's the formerm a
'catch(const std::exception&)' would catch
it.
[...]
Thank you
Click to expand...

Schobi

--
(e-mail address removed) is never read
I'm Schobi at suespammers dot org

"Sometimes compilers are so much more reasonable than people."
Scott Meyers
 
Hi,
the 0. position is a pointer to an Dialog. I think two threads try to acces
the dialog... So it is an Accessexception, the id is 0xc0000005.
But the exception is not chaught.

in german:
Hi,
Du sprichst deutsch oder? :=)
Also ich an der 0.ten Position befindet sich ein Zeiger auf einen Dialog...
Die Exception ist eine Zugriffsexception weil 2 Threads auf den Dialog
zugreifen. Der Dialog sollte synchronisiert und gelockt sein..
Aber ich kann den Exception nciht abfangen...
In MFC sind doch alle Exception von CException abgeleitet, oder?


Hendrik Schober said:
Nils said:
Hi,
sometime the following line produces an exception:
((CMessageDialog*)vec->at(0))->EndDialog(1);
Now I want to catch this Exception [...]
Click to expand...


The question would be: What of this line
produces the exception?
From what I see it could either be 'at()'
or 'EndDialog()'. If it's the formerm a
'catch(const std::exception&)' would catch
it.
[...]
Thank you
Click to expand...

Schobi

--
(e-mail address removed) is never read
I'm Schobi at suespammers dot org

"Sometimes compilers are so much more reasonable than people."
Scott Meyers
Click to expand...
 
Nils said:
Hi,
the 0. position is a pointer to an Dialog. I think two threads try to acces
the dialog... So it is an Accessexception, the id is 0xc0000005.
But the exception is not chaught.
Click to expand...

Access violations shouldn't be caught,
they should be fixed. They represent
an error in your program. You don't
want to hide that error. You want it
to be seen so it gets fixed.
That said, if you really want to catch
it, Structured Exception Handling is
what you need.
in german:
Hi,
Du sprichst deutsch oder? :=)
Also ich an der 0.ten Position befindet sich ein Zeiger auf einen Dialog...
Die Exception ist eine Zugriffsexception weil 2 Threads auf den Dialog
zugreifen. Der Dialog sollte synchronisiert und gelockt sein..
Click to expand...

Gut. Und wenn das getan wurde, gibt es
hoffentlich keine AV mehr. Warum willst
Du sie fangen?
Aber ich kann den Exception nciht abfangen...
Click to expand...

Suche SEH in der MSDN Lib. Oder laß es
lieber, und behebe den Fehler.
In MFC sind doch alle Exception von CException abgeleitet, oder?
Click to expand...

Ich habe MFC nie benutzt.
[...]
Click to expand...


Schobi

--
(e-mail address removed) is never read
I'm Schobi at suespammers dot org

"Sometimes compilers are so much more reasonable than people."
Scott Meyers
 
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