114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
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//--------------------------------------------------------------------------------
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//
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// File: EFFECTS.CPP
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//
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// Implements the interfaces to the DLL.
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//
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//--------------------------------------------------------------------------------
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#include "precomp.hxx"
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#pragma hdrstop
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//---------------------------------------------------------------------------
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// Globals
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//---------------------------------------------------------------------------
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//
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// Count number of objects and number of locks.
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//
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ULONG g_cObj = 0;
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ULONG g_cLock = 0;
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HINSTANCE g_hInst = NULL;
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BOOL g_RunningOnNT = FALSE;
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// OLE-Registry magic number
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static const GUID CLSID_PlusPackCplExt = { 0x41e300e0, 0x78b6, 0x11ce,
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{ 0x84, 0x9b, 0x44, 0x45,
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0x53, 0x54, 0x00, 0x00
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}
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};
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super_invalid;
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//---------------------------------------------------------------------------
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// DllMain()
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//---------------------------------------------------------------------------
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int APIENTRY DllMain( HINSTANCE hInstance, DWORD dwReason, LPVOID )
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{
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if( dwReason == DLL_PROCESS_ATTACH ) // Initializing
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{
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OSVERSIONINFO os;
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os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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if (GetVersionEx( &os ))
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{
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if (os.dwPlatformId == VER_PLATFORM_WIN32_NT)
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{
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g_RunningOnNT = TRUE;
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}
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}
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g_hInst = hInstance;
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DisableThreadLibraryCalls(hInstance);
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}
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return 1;
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}
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//---------------------------------------------------------------------------
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// DllGetClassObject()
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//
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// If someone calls with our CLSID, create an IClassFactory and pass it to
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// them, so they can create and use one of our CPropSheetExt objects.
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//
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//---------------------------------------------------------------------------
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STDAPI DllGetClassObject( REFCLSID rclsid, REFIID riid, LPVOID* ppvOut )
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{
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*ppvOut = NULL; // Assume Failure
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if( IsEqualCLSID( rclsid, CLSID_PlusPackCplExt ) )
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{
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//
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//Check that we can provide the interface
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//
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if( IsEqualIID( riid, IID_IUnknown) ||
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IsEqualIID( riid, IID_IClassFactory )
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)
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{
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//Return our IClassFactory for CPropSheetExt objects
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*ppvOut = (LPVOID* )new CClassFactory();
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if( NULL != *ppvOut )
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{
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//AddRef the object through any interface we return
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((CClassFactory*)*ppvOut)->AddRef();
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return NOERROR;
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}
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return E_OUTOFMEMORY;
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}
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return E_NOINTERFACE;
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}
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else
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{
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return CLASS_E_CLASSNOTAVAILABLE;
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}
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}
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//---------------------------------------------------------------------------
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// DllCanUnloadNow()
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//
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// If we are not locked, and no objects are active, then we can exit.
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//
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//---------------------------------------------------------------------------
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STDAPI DllCanUnloadNow()
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{
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SCODE sc;
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//
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//Our answer is whether there are any object or locks
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//
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sc = (0L == g_cObj && 0 == g_cLock) ? S_OK : S_FALSE;
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return ResultFromScode(sc);
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}
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