mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.6 KiB
73 lines
1.6 KiB
#ifndef __ENUMERATORTEMPLATES_H__
|
|
#define __ENUMERATORTEMPLATES_H__
|
|
|
|
template <class TIMPL, class TELT>
|
|
class CEnumAny : public TIMPL
|
|
{
|
|
public:
|
|
CEnumAny() : _cRef(1), _cNext(0) {}
|
|
virtual ~CEnumAny() {}
|
|
|
|
// IUnknown methods
|
|
// STDMETHODIMP QueryInterface(REFIID riid, void **ppv);
|
|
STDMETHODIMP_(ULONG) AddRef()
|
|
{
|
|
return ++_cRef;
|
|
}
|
|
|
|
STDMETHODIMP_(ULONG) Release()
|
|
{
|
|
if (--_cRef > 0)
|
|
return _cRef;
|
|
|
|
delete this;
|
|
return 0;
|
|
}
|
|
|
|
// IEnumXXXX methods
|
|
STDMETHODIMP Next(ULONG celt, TELT *rgelt, ULONG *pcelt)
|
|
{
|
|
UINT cNum = 0;
|
|
ZeroMemory(rgelt, sizeof(rgelt[0])*celt);
|
|
while (cNum < celt
|
|
&& _Next(&rgelt[cNum]))
|
|
{
|
|
_cNext++;
|
|
cNum++;
|
|
}
|
|
|
|
if (pcelt)
|
|
*pcelt = cNum;
|
|
|
|
return (celt == cNum) ? S_OK: S_FALSE;
|
|
}
|
|
|
|
STDMETHODIMP Skip(ULONG celt)
|
|
{ return E_NOTIMPL; }
|
|
STDMETHODIMP Reset()
|
|
{ return E_NOTIMPL; }
|
|
STDMETHODIMP Clone(TIMPL **ppenum)
|
|
{ return E_NOTIMPL; }
|
|
|
|
protected:
|
|
virtual BOOL _Next(TELT *pelt) = 0;
|
|
protected:
|
|
LONG _cRef;
|
|
ULONG _cNext;
|
|
};
|
|
|
|
class CEnumAssociationElements : public CEnumAny<IEnumAssociationElements, IAssociationElement *>
|
|
{
|
|
public:
|
|
STDMETHODIMP QueryInterface(REFIID riid, void **ppv)
|
|
{
|
|
static const QITAB qit[] = {
|
|
QITABENT(CEnumAssociationElements, IEnumAssociationElements),
|
|
{ 0 }
|
|
};
|
|
return QISearch(this, qit, riid, ppv);
|
|
}
|
|
};
|
|
|
|
#endif // __ENUMERATORTEMPLATES_H__
|
|
|