<div dir="ltr">The assignment operator works by increasing the ref count of the object pointed to. But the object returned from the raw New has a ref count on it already, so combining it with the assignment operator results in a ref count of 2. If you use the raw New you have to save its value in a local non-smart-pointer variable and then Delete it when you are done with it. (That's the whole reason for having a smart pointer specific New method is to avoid that hassle.)<br>
<br><div>Does that make sense?</div><div><br></div><div>David</div><div><br></div><div><br><div class="gmail_quote">On Tue, Oct 7, 2008 at 10:58 AM, pjtr hahn <span dir="ltr"><<a href="mailto:pjtr.hahn@googlemail.com">pjtr.hahn@googlemail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hmm, Ok I didn't knew the usage you show in your example but<br>
netherless the docs have an assignment operator that should work as I<br>
expected, or am I wrong?<br>
<br>
vtkSmartPointer & operator= (T *r)<br>
<br>
<br>
Thanks so far for your hint and example.<br>
<br>
<br>
<br>
2008/10/7 David Cole <<a href="mailto:david.cole@kitware.com">david.cole@kitware.com</a>>:<br>
<div><div></div><div class="Wj3C7c">> I am not sure why that worked before...... It should have given you a memory<br>
> leak before. Maybe you didn't really have leak detection turned on before?<br>
> The correct New construct to use with vtkSmartPointer is:<br>
> vtkSmartPointer<vtkSomeObject> ptr<br>
> = vtkSmartPointer<vtkSomeObject>::New();<br>
> HTH,<br>
> David<br>
><br>
> On Tue, Oct 7, 2008 at 9:39 AM, pjtr hahn <<a href="mailto:pjtr.hahn@googlemail.com">pjtr.hahn@googlemail.com</a>> wrote:<br>
>><br>
>> Hello,<br>
>><br>
>> since my last CVS Update (today) vtkSmartPointer isn't working like<br>
>> expected anymore.<br>
>><br>
>> While code like<br>
>><br>
>> function_scope{<br>
>><br>
>> vtkSomeObject * ptr = vtkSomeObjekt::New();<br>
>><br>
>> ...... more code ......<br>
>><br>
>> ptr->Delete();<br>
>><br>
>> }<br>
>><br>
>> works I get memory leak error messages when changing the same code to<br>
>><br>
>> function_scope{<br>
>><br>
>> vtkSmartPointer< vtkSomeObject > ptr = vtkSomeObjekt::New();<br>
>><br>
>> ...... more code ......<br>
>><br>
>> } // end scope<br>
>><br>
>> This worked before.<br>
>><br>
>> I'm on Vista / Visual Studio Express 2008<br>
>><br>
>> regards,<br>
>><br>
>> Peter<br>
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><br>
><br>
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</div></div></blockquote></div><br></div></div>