Re: How to solve this problem?
I find: hr=pISub->QueryInterface(IID_IAdd,(void**)&pIAdd);
it is error?why?
"Igor Tandetnik" <itandetnik@mvps.org> ????????
news:e2ExQebBIHA.912@TK2MSFTNGP05.phx.gbl...
"Lee Tow" <fbjlt@pub3.fz.fj.cn> wrote in message
news:uFy$dZbBIHA.3848@TK2MSFTNGP05.phx.gbl
1:I write a idl,the file name is IAdd.idl,
and then: midl IAdd.idl, and then it build IAdd.h,IAdd_i.c,
4:now I write client codes,
#include <windows.h>
#include <iostream.h>
#include "..\sub\sub.h"
#include "..\sub\sub_i.c"
Don't you want to also include IAdd.h and IAdd_i.c ?
void main()
{
HRESULT hr;
hr=CoInitialize(NULL);
ISub *pISub=NULL;
hr=CoCreateInstance(CLSID_Sub,NULL,CLSCTX_INPROC_SERVER,IID_ISub,(void**)&pI
Sub);
long res;
hr=pISub->Min(22,10,&res);
IAdd *pIAdd=NULL;
hr=pISub->QueryInterface(IID_IAdd,(void**)&pIAdd);
if(FAILED(hr))
{
cout<<"error"<<endl; //I find the error on this.
}
....
}
Who could tell me how to solve it?
To solve what? You never stated what the problem is with this code.
--
With best wishes,
Igor Tandetnik
With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925