Re: Explicitly calling the constructor

Already solved.

The necessity was to place the scope operator in front of the constructor
call, as in the following example:

pData->CTestClass::CTestClass();

-------

"Antti Keskinen" <antti.keskinen@xxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:ebU%23fgHfFHA.3692@xxxxxxxxxxxxxxxxxxxxxxx
> Hello !
>
> I have a simple but interesting problem. I am using the 'malloc' routine
> to reserve memory for a class object, and then trying to call the object's
> constructor via the pointer returned. For some reason, this does not work
> at all, and I have no idea why.
>
> The reason why I need to do this is that I'm developing a COM component,
> and in there it's suggested to use CoTaskMemAlloc to reserve memory
> instead of the 'new keyword'. The object I'm trying to initialize is a
> complex class, thus I need to call it's constructor.
>
> Here is a code sample, to which Visual Studio .NET 2003 answers with error
> C2273:
>
> #include <stdlib.h>
> #include <malloc.h>
> #include <queue>
> class CTestClass
> {
> public:
> CTestClass()
> {
> m_nData = 0;
> }
> private:
> int m_nData;
> };
>
> int main(void)
> {
> CTestClass* pData = (CTestClass*) malloc( sizeof(CTestClass) );
>
> if ( pData )
> {
> pData->CTestClass();
> free( pData );
> }
>
> return 0;
> }
>


.

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