148 lines
3 KiB
C++
148 lines
3 KiB
C++
#include "shole.h"
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#include "ids.h"
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#include "scguid.h"
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#define DECL_CRTFREE
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#include <crtfree.h>
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LONG g_cRefThisDll = 0; // per-instance
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STDAPI_(void) DllAddRef(void)
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{
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InterlockedIncrement(&g_cRefThisDll);
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}
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STDAPI_(void) DllRelease(void)
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{
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InterlockedDecrement(&g_cRefThisDll);
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}
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class CMyClassFactory : public IClassFactory
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{
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public:
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CMyClassFactory(REFCLSID rclsid);
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~CMyClassFactory() { DllRelease(); }
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// IUnKnown
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virtual HRESULT __stdcall QueryInterface(REFIID,void **);
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virtual ULONG __stdcall AddRef(void);
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virtual ULONG __stdcall Release(void);
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// IClassFactory
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virtual HRESULT __stdcall CreateInstance(
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IUnknown *pUnkOuter, REFIID riid, void **ppvObject);
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virtual HRESULT __stdcall LockServer(BOOL fLock);
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protected:
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UINT _cRef;
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CLSID _clsid;
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};
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CMyClassFactory::CMyClassFactory(REFCLSID rclsid) : _cRef(1), _clsid(rclsid)
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{
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DllAddRef();
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}
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HRESULT CMyClassFactory::QueryInterface(REFIID riid, void **ppvObject)
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{
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HRESULT hres;
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if (IsEqualGUID(riid, IID_IClassFactory) || IsEqualGUID(riid, IID_IUnknown)) {
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_cRef++;
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*ppvObject = (LPCLASSFACTORY)this;
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hres = NOERROR;
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}
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else
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{
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*ppvObject = NULL;
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hres = ResultFromScode(E_NOINTERFACE);
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}
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return hres;
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}
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ULONG CMyClassFactory::AddRef(void)
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{
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return ++_cRef;
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}
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ULONG CMyClassFactory::Release(void)
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{
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if (--_cRef>0) {
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return _cRef;
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}
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delete this;
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return 0;
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}
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HRESULT CMyClassFactory::CreateInstance(IUnknown *pUnkOuter, REFIID riid, void **ppvObject)
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{
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if (pUnkOuter)
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return CLASS_E_NOAGGREGATION;
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LPUNKNOWN punk;
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HRESULT hres;
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if (IsEqualGUID(_clsid, CLSID_CScrapData))
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{
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hres = CScrapData_CreateInstance(&punk);
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}
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#ifdef FEATURE_SHELLEXTENSION
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else if (IsEqualGUID(_clsid, CLSID_CTemplateFolder))
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{
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hres = CTemplateFolder_CreateInstance(&punk);
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}
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else if (IsEqualGUID(_clsid, CLSID_CScrapExt))
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{
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hres = CScrapExt_CreateInstance(&punk);
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}
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#endif
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else
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{
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return E_UNEXPECTED;
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}
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if (SUCCEEDED(hres))
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{
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hres = punk->QueryInterface(riid, ppvObject);
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punk->Release();
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}
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return hres;
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}
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HRESULT CMyClassFactory::LockServer(BOOL fLock)
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{
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return S_OK;
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}
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STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID * ppvOut)
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{
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if (IsEqualGUID(rclsid,CLSID_CScrapData)
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#ifdef FEATURE_SHELLEXTENSION
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|| IsEqualGUID(rclsid,CLSID_CTemplateFolder)
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|| IsEqualGUID(rclsid,CLSID_CScrapExt)
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#endif
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)
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{
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CMyClassFactory *pmycls = new CMyClassFactory(rclsid);
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if (pmycls)
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{
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HRESULT hres = pmycls->QueryInterface(riid, ppvOut);
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pmycls->Release();
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return hres;
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}
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return E_OUTOFMEMORY;
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}
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return CLASS_E_CLASSNOTAVAILABLE;
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}
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STDAPI DllCanUnloadNow(void)
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{
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if (g_cRefThisDll)
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{
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return S_FALSE;
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}
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DebugMsg(DM_TRACE, TEXT("sc TR - DllCanUnloadNow returning S_OK (bye, bye...)"));
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return S_OK;
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}
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