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src/modules/previewpane/QoiPreviewHandlerCpp/ClassFactory.cpp
84 строки
1 KB
Pedro Lamas
[FileExplorer]Add QoiThumbnailProvider and QoiPreviewHandler (#29735)
14 ноя 2023, 18:41
Не верифицирован
14 ноя 2023, 18:41
0990724
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#include "pch.h" #include "ClassFactory.h" #include "QoiPreviewHandler.h" #include <new> #include <Shlwapi.h> extern long g_cDllRef; ClassFactory::ClassFactory() : m_cRef(1) { InterlockedIncrement(&g_cDllRef); } ClassFactory::~ClassFactory() { InterlockedDecrement(&g_cDllRef); } // // IUnknown // IFACEMETHODIMP ClassFactory::QueryInterface(REFIID riid, void **ppv) { static const QITAB qit[] = { QITABENT(ClassFactory, IClassFactory), { 0 }, }; return QISearch(this, qit, riid, ppv); } IFACEMETHODIMP_(ULONG) ClassFactory::AddRef() { return InterlockedIncrement(&m_cRef); } IFACEMETHODIMP_(ULONG) ClassFactory::Release() { ULONG cRef = InterlockedDecrement(&m_cRef); if (0 == cRef) { delete this; } return cRef; } // // IClassFactory // IFACEMETHODIMP ClassFactory::CreateInstance(IUnknown *pUnkOuter, REFIID riid, void **ppv) { HRESULT hr = CLASS_E_NOAGGREGATION; if (pUnkOuter == NULL) { hr = E_OUTOFMEMORY; QoiPreviewHandler* pExt = new (std::nothrow) QoiPreviewHandler(); if (pExt) { hr = pExt->QueryInterface(riid, ppv); pExt->Release(); } } return hr; } IFACEMETHODIMP ClassFactory::LockServer(BOOL fLock) { if (fLock) { InterlockedIncrement(&g_cDllRef); } else { InterlockedDecrement(&g_cDllRef); } return S_OK; }