HRESULT CWIAPropertyManager::DeletePropertyData(__in PWIA_PROPERTY_INFO_DATA pInfo)
{
HRESULT hr = E_INVALIDARG;
if (pInfo)
{
//
// delete any allocated LISTS
//
if (pInfo->wpi.lAccessFlags & WIA_PROP_LIST)
{
if(pInfo->pv.vt & VT_I4)
{
WIAS_TRACE((g_hInst,"Freeing LONG List for %d",pInfo->pid));
if (pInfo->wpi.ValidVal.List.pList)
{
LocalFree(pInfo->wpi.ValidVal.List.pList);
pInfo->wpi.ValidVal.List.pList = NULL;
}
}
if(pInfo->pv.vt & VT_CLSID)
{
WIAS_TRACE((g_hInst,"Freeing GUID List for %d",pInfo->pid));
if (pInfo->wpi.ValidVal.ListGuid.pList)
{
LocalFree(pInfo->wpi.ValidVal.ListGuid.pList);
pInfo->wpi.ValidVal.ListGuid.pList = NULL;
}
}
}
//
// free any allocated BSTRS
//
if (pInfo->pv.vt == VT_BSTR)
{
SysFreeString(pInfo->pv.bstrVal);
pInfo->pv.bstrVal = NULL;
}
//
// delete any allocated GUIDS
//
if (pInfo->pv.vt == VT_CLSID)
{
delete pInfo->pv.puuid;
pInfo->pv.puuid = NULL;
}
hr = S_OK;
}
return hr;
}
void CWIACapabilityManager::Destroy()
{
WIAS_TRACE((g_hInst,"Array contents"));
for(INT i = 0; i < m_CapabilityArray.Size(); i++)
{
FreeCapability(&m_CapabilityArray[i],TRUE);
}
m_CapabilityArray.Destroy();
}
HRESULT CWiaDriver::GetCapabilities(
_Out_ PSTI_USD_CAPS pDevCaps)
{
HRESULT hr = S_OK;
WIAEX_TRACE_BEGIN;
if (!pDevCaps)
{
hr = E_INVALIDARG;
WIAEX_ERROR((g_hInst, "Invalid parameter, hr = 0x%08X",hr));
}
if (SUCCEEDED(hr))
{
//
// The sample driver supports device notifications (required), known also as interrupt events.
// Polling (optional) it is not needed so STI_GENCAP_POLLING_NEEDED is not reported here:
//
memset(pDevCaps, 0, sizeof(STI_USD_CAPS));
pDevCaps->dwVersion = STI_VERSION_3;
pDevCaps->dwGenericCaps = STI_GENCAP_WIA | STI_USD_GENCAP_NATIVE_PUSHSUPPORT | STI_GENCAP_NOTIFICATIONS;
WIAS_TRACE((g_hInst, "Device capabilities: 0x%08X", pDevCaps->dwGenericCaps));
}
if (FAILED(hr))
{
m_hrLastEdviceError = hr;
}
WIAEX_TRACE((g_hInst, "IStiUSD::GetCapabilities 0x%08X", hr));
return hr;
}
HRESULT CWiaDriver::DeviceReset()
{
WIAS_TRACE((g_hInst, "IStiUSD::DeviceReset 0x%08X", S_OK));
return S_OK;
}
HRESULT CWiaDriver::GetStatus(
_Inout_ PSTI_DEVICE_STATUS pDevStatus)
{
HRESULT hr = S_OK;
if (!pDevStatus)
{
hr = E_INVALIDARG;
WIAEX_ERROR((g_hInst, "Invalid parameter, hr = 0x%08X",hr));
}
//
// A driver may be requested to report one or both of the following:
//
// STI_DEVSTATUS_EVENTS_STATE - The driver should fill in the dwEventHandlingState member
// STI_DEVSTATUS_ONLINE_STATE - The driver should fill in the dwOnlineState member
//
// In this case STI_DEVSTATUS_EVENTS_STATE is not expected nor supported as this driver
// does not support polling events (if the driver previously set the STI_GENCAP_POLLING_NEEDED
// flag in the device's STI_DEV_CAPS structure, the IStiUSD::GetStatus method is the means
// by which the Event Monitor determines if a still image device event has occurred;
// the Event Monitor will call the method, specifying STI_DEVSTATUS_EVENT_STATE
// in the supplied STI_DEVICE_STATUS structure; the driver must poll the device
// and set STI_EVENTHANDLING_PENDING if an event has occurred)
//
// If the caller specifies STI_DEVSTATUS_ONLINE_STATE in the supplied
// STI_DEVICE_STATUS structure, the driver should set the appropriate flag
// in the STI_DEVICE_STATUS structure's dwOnlineState member.
//
if (SUCCEEDED(hr))
{
pDevStatus->dwOnlineState = 0;
pDevStatus->dwHardwareStatusCode = 0;
pDevStatus->dwEventHandlingState = 0;
//
// STI_DEVSTATUS_ONLINE_STATE:
//
if (pDevStatus->StatusMask & STI_DEVSTATUS_ONLINE_STATE)
{
//
// This sample driver is always online and ready:
//
pDevStatus->dwOnlineState = STI_ONLINESTATE_OPERATIONAL;
}
//
// STI_DEVSTATUS_EVENTS_STATE:
//
else if (pDevStatus->StatusMask & STI_DEVSTATUS_EVENTS_STATE)
{
//
// Polled events are not supported so we don't have to return anyting here:
//
pDevStatus->dwEventHandlingState &= ~STI_EVENTHANDLING_PENDING;
}
}
if (FAILED(hr))
{
m_hrLastEdviceError = hr;
}
WIAS_TRACE((g_hInst, "IStiUSD::GetStatus 0x%08X", hr));
return hr;
}
