how to execute non-static method on class instance?   

Hello,

I have one question. If I want to execute static method in WMI, there is no 
problem.

CComPtr<IWbemServices> pSvc = NULL;
// set pSvc through ConnectServer()
hres = pSvc->ExecMethod(_bstr_t(_T("BcdStore")), _bstr_t(_T("OpenStore")), 
0, NULL, pInParamsObj, &pOutParamsObj, NULL);

This works since OpenStore is static method of BcdStore class.

But once I have BcdStore class instance (OpenStore method creates instance), 
then I need to call its member method OpenObject. How to do this?

I get output param from static method OpenStore() - BcdStore object:
IWbemClassObject* pBcdObj;

But now how should I call OpenObject method on this BcdStore object?
hres = pSvc->ExecMethod(strObjectPath, _bstr_t(_T("OpenObject")), 0, NULL, 
pInParamsObj, &pOutParamsObj, NULL);
How should I use pBcdObj to get strObjectPath used in previous line of code? 
Or is there some other way how to call method on class instance?

Thanks very much.

Michal

date: Thu, 17 Jul 2008 06:04:02 -0700   author:   trencan

RE: how to execute non-static method on class instance?   

"trencan" wrote:

> Hello,
> 
> I have one question. If I want to execute static method in WMI, there is no 
> problem.
> 
> CComPtr<IWbemServices> pSvc = NULL;
> // set pSvc through ConnectServer()
> hres = pSvc->ExecMethod(_bstr_t(_T("BcdStore")), _bstr_t(_T("OpenStore")), 
> 0, NULL, pInParamsObj, &pOutParamsObj, NULL);
> 
> This works since OpenStore is static method of BcdStore class.
> 
> But once I have BcdStore class instance (OpenStore method creates instance), 
> then I need to call its member method OpenObject. How to do this?
> 
> I get output param from static method OpenStore() - BcdStore object:
> IWbemClassObject* pBcdObj;
> 
> But now how should I call OpenObject method on this BcdStore object?
> hres = pSvc->ExecMethod(strObjectPath, _bstr_t(_T("OpenObject")), 0, NULL, 
> pInParamsObj, &pOutParamsObj, NULL);
> How should I use pBcdObj to get strObjectPath used in previous line of code? 
> Or is there some other way how to call method on class instance?
> 
> Thanks very much.
> 
> Michal


You could try using IWbemClassObject::Get() to get pBcdObj __PATH system 
property.

-- 
urkec

date: Thu, 17 Jul 2008 07:56:01 -0700   author:   urkec

RE: how to execute non-static method on class instance?   

"urkec" wrote:

> "trencan" wrote:
> 
> > Hello,
> > 
> > I have one question. If I want to execute static method in WMI, there is no 
> > problem.
> > 
> > CComPtr<IWbemServices> pSvc = NULL;
> > // set pSvc through ConnectServer()
> > hres = pSvc->ExecMethod(_bstr_t(_T("BcdStore")), _bstr_t(_T("OpenStore")), 
> > 0, NULL, pInParamsObj, &pOutParamsObj, NULL);
> > 
> > This works since OpenStore is static method of BcdStore class.
> > 
> > But once I have BcdStore class instance (OpenStore method creates instance), 
> > then I need to call its member method OpenObject. How to do this?
> > 
> > I get output param from static method OpenStore() - BcdStore object:
> > IWbemClassObject* pBcdObj;
> > 
> > But now how should I call OpenObject method on this BcdStore object?
> > hres = pSvc->ExecMethod(strObjectPath, _bstr_t(_T("OpenObject")), 0, NULL, 
> > pInParamsObj, &pOutParamsObj, NULL);
> > How should I use pBcdObj to get strObjectPath used in previous line of code? 
> > Or is there some other way how to call method on class instance?
> > 
> > Thanks very much.
> > 
> > Michal
> 
> 
> You could try using IWbemClassObject::Get() to get pBcdObj __PATH system 
> property.
> 
> -- 
> urkec

That's right. Thank you very much. Only small comment, property __PATH was 
empty, but __RELPATH is OK. Now it works.

Michal

date: Fri, 18 Jul 2008 02:01:01 -0700   author:   trencan