60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
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//==========================================================================;
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//
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// Copyright (c) Microsoft Corporation 1999-2000.
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//
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//--------------------------------------------------------------------------;
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//
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// factoryhelp.h - helper class for creating vidctl instances from a variety of factories including element
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// behavior factories and pluggable protocols
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#include "atlbase.h"
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typedef CComQIPtr<ICreatePropBagOnRegKey> PQCreatePropBagOnRegKey;
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typedef CComQIPtr<IWebBrowserApp> PQWebBrowserApp;
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typedef CComQIPtr<IWebBrowser2> PQWebBrowser2;
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#define RBFACTORY_DEFAULT_KEY OLESTR("Software\\Microsoft\\MSVidCtl")
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#define PROPNAME_DEFAULT_TR OLESTR("DefaultTuneRequest")
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LPCOLESTR __declspec(selectany) BIND_TO_OBJ_VAL = OLESTR("TRUE");
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LPOLESTR __declspec(selectany) KEY_CLSID_VidCtl = OLESTR("B0EDF163-910A-11D2-B632-00C04F79498E");
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LPCOLESTR __declspec(selectany) TVPROT_SCHEME_NAME = OLESTR("tv");
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LPCOLESTR __declspec(selectany) DVDPROT_SCHEME_NAME = OLESTR("dvd");
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class CFactoryHelper {
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public:
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static CComVariant GetDefaultTR() {
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PQPropertyBag pBag;
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PQCreatePropBagOnRegKey pCreateBag(CLSID_CreatePropBagOnRegKey, NULL, CLSCTX_INPROC_SERVER);
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if (!pCreateBag) {
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TRACELM(TRACE_ERROR, "can't create prop bag");
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return CComVariant();
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}
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HRESULT hr = pCreateBag->Create(HKEY_CURRENT_USER, RBFACTORY_DEFAULT_KEY, 0, KEY_READ, IID_IPropertyBag, reinterpret_cast<LPVOID *>(&pBag));
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if (FAILED(hr)) {
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TRACELSM(TRACE_ERROR, (dbgDump << "No Default Tune Request Key Present. hr = " << hr), "");
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return CComVariant();
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}
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CComVariant pVar;
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hr = pBag->Read(PROPNAME_DEFAULT_TR, &pVar, NULL);
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if (FAILED(hr) || (pVar.vt != VT_UNKNOWN && pVar.vt != VT_DISPATCH)) {
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TRACELSM(TRACE_ERROR, (dbgDump << "No Default Tune Request Property Present. hr = " << hr), "");
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return CComVariant();
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}
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PQTuningSpace pts;
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PQTuneRequest ptr(pVar.vt == VT_UNKNOWN ? pVar.punkVal : pVar.pdispVal);
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if (!ptr) {
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TRACELSM(TRACE_ERROR, (dbgDump << PROPNAME_DEFAULT_TR << " not a tune request"), "");
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return CComVariant();
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}
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hr = ptr->get_TuningSpace(&pts);
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if (FAILED(hr) || !pts) {
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TRACELSM(TRACE_ERROR, (dbgDump << "Can't get ts from tr " << hr), "");
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return CComVariant();
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}
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return pVar;
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}
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};
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// end of file factoryhelp.h
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