Sample Code
Windows Driver Samples/ WPD service sample driver/ C++/ WpdCapabilities.cpp/
#include "stdafx.h" #include "WpdCapabilities.tmh" WpdCapabilities::WpdCapabilities() : m_pDevice(NULL) { } WpdCapabilities::~WpdCapabilities() { } HRESULT WpdCapabilities::Initialize(_In_ FakeDevice* pDevice) { if (pDevice == NULL) { return E_POINTER; } m_pDevice = pDevice; return S_OK; } HRESULT WpdCapabilities::DispatchWpdMessage(_In_ REFPROPERTYKEY Command, _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; if (hr == S_OK) { if (Command.fmtid != WPD_CATEGORY_CAPABILITIES) { hr = E_INVALIDARG; CHECK_HR(hr, "This object does not support this command category %ws",CComBSTR(Command.fmtid)); } } if (hr == S_OK) { if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_COMMANDS)) { hr = OnGetSupportedCommands(pParams, pResults); CHECK_HR(hr, "Failed to get supported commands"); } else if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_COMMAND_OPTIONS)) { hr = OnGetCommandOptions(pParams, pResults); CHECK_HR(hr, "Failed to get command options"); } else if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_FUNCTIONAL_CATEGORIES)) { hr = OnGetFunctionalCategories(pParams, pResults); CHECK_HR(hr, "Failed to get functional categories"); } else if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_FUNCTIONAL_OBJECTS)) { hr = OnGetFunctionalObjects(pParams, pResults); CHECK_HR(hr, "Failed to get functional objects"); } else if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_CONTENT_TYPES)) { hr = OnGetSupportedContentTypes(pParams, pResults); CHECK_HR(hr, "Failed to get supported content types"); } else if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_FORMATS)) { hr = OnGetSupportedFormats(pParams, pResults); CHECK_HR(hr, "Failed to get supported formats"); } else if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_FORMAT_PROPERTIES)) { hr = OnGetSupportedFormatProperties(pParams, pResults); CHECK_HR(hr, "Failed to get supported format properties"); } else if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_FIXED_PROPERTY_ATTRIBUTES)) { hr = OnGetFixedPropertyAttributes(pParams, pResults); CHECK_HR(hr, "Failed to get fixed property attributes"); } else if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_EVENTS)) { hr = OnGetSupportedEvents(pParams, pResults); CHECK_HR(hr, "Failed to get supported events"); } else if (IsEqualPropertyKey(Command, WPD_COMMAND_CAPABILITIES_GET_EVENT_OPTIONS)) { hr = OnGetEventOptions(pParams, pResults); CHECK_HR(hr, "Failed to get event options"); } else { hr = E_NOTIMPL; CHECK_HR(hr, "This object does not support this command id %d", Command.pid); } } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_COMMANDS * command. * * The parameters sent to us are: * - none. * * The driver should: * - Return all commands supported by this driver as an * IPortableDeviceKeyCollection in WPD_PROPERTY_CAPABILITIES_SUPPORTED_COMMANDS. * This includes custom commands, if any. * * Note that certain commands require a "command target" to function correctly. * (e.g. delete object command) It is understood that not all objects are necessarily * valid targets (e.g. you cannot delete the device object). */ HRESULT WpdCapabilities::OnGetSupportedCommands( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { UNREFERENCED_PARAMETER(pParams); HRESULT hr = S_OK; CComPtr<IPortableDeviceKeyCollection> pCommands; // CoCreate a collection to store the supported commands. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDeviceKeyCollection, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDeviceKeyCollection, (VOID**) &pCommands); CHECK_HR(hr, "Failed to CoCreate CLSID_PortableDeviceKeyCollection"); } // Add the supported commands to the collection. if (hr == S_OK) { hr = m_pDevice->GetSupportedCommands(pCommands); CHECK_HR(hr, "Failed to get the supported commands"); } // Set the WPD_PROPERTY_CAPABILITIES_SUPPORTED_COMMANDS value in the results. if (hr == S_OK) { hr = pResults->SetIUnknownValue(WPD_PROPERTY_CAPABILITIES_SUPPORTED_COMMANDS, pCommands); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_SUPPORTED_COMMANDS"); } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_COMMAND_OPTIONS * command. * * The parameters sent to us are: * - WPD_PROPERTY_CAPABILITIES_COMMAND: a collection of property keys containing a single value, * which identifies the specific command options are requested to return. * * The driver should: * - Return an IPortableDeviceValues in WPD_PROPERTY_CAPABILITIES_COMMAND_OPTIONS, containing * the relevant options. If no options are available for this command, the driver should * return an IPortableDeviceValues with no elements in it. */ HRESULT WpdCapabilities::OnGetCommandOptions( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; PROPERTYKEY Command = WPD_PROPERTY_NULL; CComPtr<IPortableDeviceValues> pOptions; // Get the command whose options have been requested if (hr == S_OK) { hr = pParams->GetKeyValue(WPD_PROPERTY_CAPABILITIES_COMMAND, &Command); CHECK_HR(hr, "Missing value for WPD_PROPERTY_CAPABILITIES_COMMAND"); } // CoCreate a collection to store the command options. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDeviceValues, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDeviceValues, (VOID**) &pOptions); CHECK_HR(hr, "Failed to CoCreateInstance CLSID_PortableDeviceValues"); } // Add command options to the collection if (hr == S_OK) { hr = m_pDevice->GetCommandOptions(Command, pOptions); CHECK_HR(hr, "Failed to get the command options"); } // Set the WPD_PROPERTY_CAPABILITIES_COMMAND_OPTIONS value in the results. if (hr == S_OK) { hr = pResults->SetIUnknownValue(WPD_PROPERTY_CAPABILITIES_COMMAND_OPTIONS, pOptions); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_COMMAND_OPTIONS"); } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_FUNCTIONAL_CATEGORIES * command. * * The parameters sent to us are: * - none. * * The driver should: * - Return an IPortableDevicePropVariantCollection (of type VT_CLSID) in * WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORIES, containing * the supported functional categories for this device. */ HRESULT WpdCapabilities::OnGetFunctionalCategories( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; CComPtr<IPortableDevicePropVariantCollection> pFunctionalCategories; UNREFERENCED_PARAMETER(pParams); // CoCreate a collection to store the supported functional categories. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDevicePropVariantCollection, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDevicePropVariantCollection, (VOID**) &pFunctionalCategories); CHECK_HR(hr, "Failed to CoCreate CLSID_PortableDevicePropVariantCollection"); } // Add the supported functional categories to the collection. if (hr == S_OK) { hr = m_pDevice->GetSupportedFunctionalCategories(pFunctionalCategories); CHECK_HR(hr, "Failed to get the supported functional categories"); } // Set the WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORIES value in the results. if (hr == S_OK) { hr = pResults->SetIUnknownValue(WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORIES, pFunctionalCategories); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORIES"); } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_FUNCTIONAL_OBJECTS * command. It is sent when the caller is interesting in finding the object IDs for all * functional objects belonging to the specified functional category. * Note: the number of functional objects is expected to be very small (less than 8 for the * whole device). * * The parameters sent to us are: * - WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORY - a GUID value containing the category * the caller is looking for. If the value is WPD_FUNCTIONAL_CATEGORY_ALL, then the driver * must return all functional objects, no matter which category they belong to. * * The driver should: * - Return an IPortableDevicePropVariantCollection (of type VT_LPWSTR) in * WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_OBJECTS, containing * the ids of the functional objects who belong to the specified functional category. * If there are no objects in the specified category, the driver should return an * empty collection. */ HRESULT WpdCapabilities::OnGetFunctionalObjects( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; GUID guidFunctionalCategory = GUID_NULL; CComPtr<IPortableDevicePropVariantCollection> pFunctionalObjects; // Get the functional category whose functional object identifiers have been requested if (hr == S_OK) { hr = pParams->GetGuidValue(WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORY, &guidFunctionalCategory); CHECK_HR(hr, "Missing value for WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORY"); } // CoCreate a collection to store the supported functional object identifiers. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDevicePropVariantCollection, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDevicePropVariantCollection, (VOID**) &pFunctionalObjects); CHECK_HR(hr, "Failed to CoCreate CLSID_PortableDevicePropVariantCollection"); } // Add the supported functional object identifiers for the specified functional // category to the collection. if (hr == S_OK) { hr = m_pDevice->GetFunctionalObjects(guidFunctionalCategory, pFunctionalObjects); CHECK_HR(hr, "Failed to get the functional objects"); } // Set the WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_OBJECTS value in the results. if (hr == S_OK) { hr = pResults->SetIUnknownValue(WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_OBJECTS, pFunctionalObjects); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_OBJECTS"); } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_CONTENT_TYPES * command. This message is sent when the client needs to know the possible content types supported * by the specified functional category. * If the driver has multiple functional objects that may support different content types, * the driver should simply merge them together and report all possible types in one list here. * * The parameters sent to us are: * - WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORY - a GUID value containing the functional category * whose content types the caller is interested in. If the value is WPD_FUNCTIONAL_CATEGORY_ALL, then the driver * must return a list of all content types supported by the device. * * The driver should: * - Return an IPortableDevicePropVariantCollection (of type VT_CLSID) in * WPD_PROPERTY_CAPABILITIES_CONTENT_TYPES, containing * the content types supported by the specified functional category. * If there are no objects in the specified category, the driver should return an * empty collection. */ HRESULT WpdCapabilities::OnGetSupportedContentTypes( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; GUID guidFunctionalCategory = GUID_NULL; CComPtr<IPortableDevicePropVariantCollection> pContentTypes; // Get the functional category whose supported content types have been requested if (hr == S_OK) { hr = pParams->GetGuidValue(WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORY, &guidFunctionalCategory); CHECK_HR(hr, "Missing value for WPD_PROPERTY_CAPABILITIES_FUNCTIONAL_CATEGORY"); } // CoCreate a collection to store the supported content types. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDevicePropVariantCollection, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDevicePropVariantCollection, (VOID**) &pContentTypes); CHECK_HR(hr, "Failed to CoCreate CLSID_PortableDevicePropVariantCollection"); } // Add the supported content types for the specified functional // category to the collection. // Note that the contacts service does not support any content types if (hr == S_OK) { hr = m_pDevice->GetSupportedContentTypes(guidFunctionalCategory, pContentTypes); CHECK_HR(hr, "Failed to get the content types"); } // Set the WPD_PROPERTY_CAPABILITIES_CONTENT_TYPES value in the results. if (hr == S_OK) { hr = pResults->SetIUnknownValue(WPD_PROPERTY_CAPABILITIES_CONTENT_TYPES, pContentTypes); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_CONTENT_TYPES"); } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_FORMATS * command. This message is sent when the client needs to know the possible formats supported * by the specified content type (e.g. for image objects, the driver may choose to support JPEG and BMP files). * * The parameters sent to us are: * - WPD_PROPERTY_CAPABILITIES_CONTENT_TYPE - a GUID value containing the content type * whose formats the caller is interested in. If the value is WPD_CONTENT_TYPE_ALL, then the driver * must return a list of all formats supported by the device. * * The driver should: * - Return an IPortableDevicePropVariantCollection (of type VT_CLSID) in * WPD_PROPERTY_CAPABILITIES_FORMATS, indicating the formats supported by the * specified content type. * If there are no formats supported by the specified content type, the driver should return an * empty collection. */ HRESULT WpdCapabilities::OnGetSupportedFormats( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; GUID guidContentType = GUID_NULL; CComPtr<IPortableDevicePropVariantCollection> pFormats; // Get the content type whose supported formats have been requested if (hr == S_OK) { hr = pParams->GetGuidValue(WPD_PROPERTY_CAPABILITIES_CONTENT_TYPE, &guidContentType); CHECK_HR(hr, "Missing value for WPD_PROPERTY_CAPABILITIES_CONTENT_TYPE"); } // CoCreate a collection to store the supported formats. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDevicePropVariantCollection, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDevicePropVariantCollection, (VOID**) &pFormats); CHECK_HR(hr, "Failed to CoCreate CLSID_PortableDevicePropVariantCollection"); } // Add the supported formats for the specified content type to the collection. if (hr == S_OK) { hr = m_pDevice->GetSupportedFormats(guidContentType, pFormats); CHECK_HR(hr, "Failed to get the content types"); } // Set the WPD_PROPERTY_CAPABILITIES_FORMATS value in the results. if (hr == S_OK) { hr = pResults->SetIUnknownValue(WPD_PROPERTY_CAPABILITIES_FORMATS, pFormats); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_FORMATS"); } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_FORMAT_PROPERTIES * command. This message is sent when the client needs to know the typical properties for objects of * a given format. * * The parameters sent to us are: * - WPD_PROPERTY_CAPABILITIES_FORMAT - a GUID value specifying the format the caller is interested in. * * The driver should: * - Return an IPortableDeviceKeyCollection in WPD_PROPERTY_CAPABILITIES_PROPERTY_KEYS, * containing the property keys. */ HRESULT WpdCapabilities::OnGetSupportedFormatProperties( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; GUID guidObjectFormat = GUID_NULL; CComPtr<IPortableDeviceKeyCollection> pKeys; // Get the object format whose supported properties have been requested if (hr == S_OK) { hr = pParams->GetGuidValue(WPD_PROPERTY_CAPABILITIES_FORMAT, &guidObjectFormat); CHECK_HR(hr, "Missing value for WPD_PROPERTY_CAPABILITIES_FORMAT"); } // CoCreate a collection to store the supported properties. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDeviceKeyCollection, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDeviceKeyCollection, (VOID**) &pKeys); CHECK_HR(hr, "Failed to CoCreate CLSID_PortableDeviceKeyCollection"); } // Add the supported properties for the specified object format to the collection. if (hr == S_OK) { hr = m_pDevice->GetSupportedFormatProperties(guidObjectFormat, pKeys); CHECK_HR(hr, "Failed to get supported properties for a format"); } // Set the WPD_PROPERTY_CAPABILITIES_PROPERTY_KEYS value in the results. if (hr == S_OK) { hr = pResults->SetIPortableDeviceKeyCollectionValue(WPD_PROPERTY_CAPABILITIES_PROPERTY_KEYS, pKeys); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_PROPERTY_KEYS"); } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_FIXED_PROPERTY_ATTRIBUTES * command. This message is sent when the client needs to know the property attributes that * are the same for all objects of the given format. * * Typically, a driver treats objects of a given format the same. Many properties therefore will * have attributes that are identical across all objects of that format. * These can be returned here. There are some attributes which may be differ per object instance, * which are not returned here. * See WPD_COMMAND_OBJECT_PROPERTIES_GET_ATTRIBUTES. * * The parameters sent to us are: * - WPD_PROPERTY_CAPABILITIES_FORMAT - a GUID value specifying the format the caller is interested in. * - WPD_PROPERTY_CAPABILITIES_PROPERTY_KEYS - a collection of property keys containing a single value, * which is the key identifying the specific property attributes we are requested to return. * * The driver should: * - Return an IPortableDeviceValues in WPD_PROPERTY_CAPABILITIES_PROPERTY_ATTRIBUTES * containing the fixed property attributes. */ HRESULT WpdCapabilities::OnGetFixedPropertyAttributes( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; GUID guidObjectFormat = GUID_NULL; PROPERTYKEY key = WPD_PROPERTY_NULL; CComPtr<IPortableDeviceValues> pAttributes; // First get ALL parameters for this command. If we cannot get ALL parameters // then E_INVALIDARG should be returned and no further processing should occur. // Get the object format whose fixed property attributes have been requested if (hr == S_OK) { hr = pParams->GetGuidValue(WPD_PROPERTY_CAPABILITIES_FORMAT, &guidObjectFormat); CHECK_HR(hr, "Missing value for WPD_PROPERTY_CAPABILITIES_FORMAT"); } // Get the property whose fixed property attributes have been requested if(hr == S_OK) { hr = pParams->GetKeyValue(WPD_PROPERTY_CAPABILITIES_PROPERTY_KEYS, &key); CHECK_HR(hr, "Missing value for WPD_PROPERTY_CAPABILITIES_PROPERTY_KEYS"); } // CoCreate a collection to store the fixed property attributes. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDeviceValues, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDeviceValues, (VOID**) &pAttributes); CHECK_HR(hr, "Failed to CoCreateInstance CLSID_PortableDeviceValues"); } // Add the fixed property attributes for the specified object format and property if (hr == S_OK) { hr = m_pDevice->GetFixedPropertyAttributes(guidObjectFormat, key, pAttributes); CHECK_HR(hr, "Failed to get fixed property attributes"); } // Set the WPD_PROPERTY_CAPABILITIES_PROPERTY_ATTRIBUTES value in the results. if (hr == S_OK) { hr = pResults->SetIPortableDeviceValuesValue(WPD_PROPERTY_CAPABILITIES_PROPERTY_ATTRIBUTES, pAttributes); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_PROPERTY_ATTRIBUTES"); } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_SUPPORTED_EVENTS * command. * * The parameters sent to us are: * - none. * * The driver should: * - Return all events supported by this driver should be returned as an * IPortableDeviceKeyCollection in WPD_PROPERTY_CAPABILITIES_SUPPORTED_EVENTS. * That includes custom commands, if any. */ HRESULT WpdCapabilities::OnGetSupportedEvents( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; CComPtr<IPortableDevicePropVariantCollection> pEvents; UNREFERENCED_PARAMETER(pParams); // CoCreate a collection to store the supported events. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDevicePropVariantCollection, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDevicePropVariantCollection, (VOID**) &pEvents); CHECK_HR(hr, "Failed to CoCreate CLSID_PortableDevicePropVariantCollection"); } // Add the supported events to the collection. if (hr == S_OK) { hr = m_pDevice->GetSupportedEvents(pEvents); CHECK_HR(hr, "Failed to get supported events"); } // Set the WPD_PROPERTY_CAPABILITIES_SUPPORTED_EVENTS value in the results. if (hr == S_OK) { hr = pResults->SetIUnknownValue(WPD_PROPERTY_CAPABILITIES_SUPPORTED_EVENTS, pEvents); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_SUPPORTED_EVENTS"); } return hr; } /** * This method is called when we receive a WPD_COMMAND_CAPABILITIES_GET_EVENT_OPTIONS * command. * * The parameters sent to us are: * - WPD_PROPERTY_CAPABILITIES_EVENT: a GUID value indicating the Event whose options should be returned. * * The driver should: * - Return an IPortableDeviceValues in WPD_PROPERTY_CAPABILITIES_EVENT_OPTIONS, containing * the relevant options. */ HRESULT WpdCapabilities::OnGetEventOptions( _In_ IPortableDeviceValues* pParams, _In_ IPortableDeviceValues* pResults) { HRESULT hr = S_OK; GUID Event = GUID_NULL; CComPtr<IPortableDeviceValues> pOptions; // Get the event whose options have been requested if (hr == S_OK) { hr = pParams->GetGuidValue(WPD_PROPERTY_CAPABILITIES_EVENT, &Event); CHECK_HR(hr, "Missing value for WPD_PROPERTY_CAPABILITIES_EVENT"); } // CoCreate a collection to store the event options. if (hr == S_OK) { hr = CoCreateInstance(CLSID_PortableDeviceValues, NULL, CLSCTX_INPROC_SERVER, IID_IPortableDeviceValues, (VOID**) &pOptions); CHECK_HR(hr, "Failed to CoCreateInstance CLSID_PortableDeviceValues"); } // Add event options to the collection if (hr == S_OK) { hr = m_pDevice->GetEventOptions(pOptions); CHECK_HR(hr, "Failed to get event options"); } // Set the WPD_PROPERTY_CAPABILITIES_EVENT_OPTIONS value in the results. if (hr == S_OK) { hr = pResults->SetIUnknownValue(WPD_PROPERTY_CAPABILITIES_EVENT_OPTIONS, pOptions); CHECK_HR(hr, "Failed to set WPD_PROPERTY_CAPABILITIES_EVENT_OPTIONS"); } return hr; }
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