121 lines
2.1 KiB
C++
121 lines
2.1 KiB
C++
|
// DriversEnum.cpp : Implementation of CDevCon2App and DLL registration.
|
||
|
|
|
||
|
|
#include "stdafx.h"
|
||
|
|
#include "DevCon2.h"
|
||
|
|
#include "DriversEnum.h"
|
||
|
|
#include "Driver.h"
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
|
||
|
|
CDriverPackagesEnum::~CDriverPackagesEnum()
|
||
|
|
{
|
||
|
|
DWORD c;
|
||
|
|
if(pDrivers) {
|
||
|
|
for(c=0;c<Count;c++) {
|
||
|
|
pDrivers[c]->Release();
|
||
|
|
}
|
||
|
|
delete [] pDrivers;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
HRESULT CDriverPackagesEnum::Next(
|
||
|
|
ULONG celt,
|
||
|
|
VARIANT * rgVar,
|
||
|
|
ULONG * pCeltFetched
|
||
|
|
)
|
||
|
|
{
|
||
|
|
ULONG fetched;
|
||
|
|
CDriverPackage *pDrv;
|
||
|
|
if(pCeltFetched) {
|
||
|
|
*pCeltFetched = 0;
|
||
|
|
}
|
||
|
|
for(fetched = 0; fetched<celt && Position<Count ; fetched++,Position++) {
|
||
|
|
VariantInit(&rgVar[fetched]);
|
||
|
|
|
||
|
|
pDrv = pDrivers[Position];
|
||
|
|
pDrv->AddRef();
|
||
|
|
V_VT(&rgVar[fetched]) = VT_DISPATCH;
|
||
|
|
V_DISPATCH(&rgVar[fetched]) = pDrv;
|
||
|
|
}
|
||
|
|
if(pCeltFetched) {
|
||
|
|
*pCeltFetched = fetched;
|
||
|
|
}
|
||
|
|
return (fetched<celt) ? S_FALSE : S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT CDriverPackagesEnum::Skip(
|
||
|
|
ULONG celt
|
||
|
|
)
|
||
|
|
{
|
||
|
|
DWORD remaining = Count-Position;
|
||
|
|
if(remaining<celt) {
|
||
|
|
Position = Count;
|
||
|
|
return S_FALSE;
|
||
|
|
} else {
|
||
|
|
Position += (DWORD)celt;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT CDriverPackagesEnum::Reset(
|
||
|
|
)
|
||
|
|
{
|
||
|
|
Position = 0;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT CDriverPackagesEnum::Clone(
|
||
|
|
IEnumVARIANT ** ppEnum
|
||
|
|
)
|
||
|
|
{
|
||
|
|
*ppEnum = NULL;
|
||
|
|
HRESULT hr;
|
||
|
|
CComObject<CDriverPackagesEnum> *pEnum = NULL;
|
||
|
|
hr = CComObject<CDriverPackagesEnum>::CreateInstance(&pEnum);
|
||
|
|
if(FAILED(hr)) {
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
if(!pEnum) {
|
||
|
|
return E_OUTOFMEMORY;
|
||
|
|
}
|
||
|
|
if(!pEnum->CopyDrivers(pDrivers,Count)) {
|
||
|
|
delete pEnum;
|
||
|
|
return E_OUTOFMEMORY;
|
||
|
|
}
|
||
|
|
pEnum->Position = Position;
|
||
|
|
|
||
|
|
pEnum->AddRef();
|
||
|
|
*ppEnum = pEnum;
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
BOOL CDriverPackagesEnum::CopyDrivers(CDriverPackage **pArray, DWORD NewCount)
|
||
|
|
{
|
||
|
|
DWORD c;
|
||
|
|
|
||
|
|
if(pDrivers) {
|
||
|
|
delete [] pDrivers;
|
||
|
|
pDrivers = NULL;
|
||
|
|
}
|
||
|
|
Count = 0;
|
||
|
|
Position = 0;
|
||
|
|
pDrivers = new CDriverPackage*[NewCount];
|
||
|
|
if(!pDrivers) {
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
for(c=0;c<NewCount;c++) {
|
||
|
|
pArray[c]->AddRef();
|
||
|
|
pDrivers[c] = pArray[c];
|
||
|
|
if(!pDrivers[c]) {
|
||
|
|
Count = c;
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Count = NewCount;
|
||
|
|
return TRUE;
|
||
|
|
}
|