// HelloWorld.cpp : Implementation of DLL Exports. #include "stdafx.h" #include "resource.h" #include "HelloWorld_i.h" #include "dllmain.h" // Used to determine whether the DLL can be unloaded by OLE. STDAPI DllCanUnloadNow(void) { return _AtlModule.DllCanUnloadNow(); } // Returns a class factory to create an object of the requested type. STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv) { return _AtlModule.DllGetClassObject(rclsid, riid, ppv); } // DllRegisterServer - Adds entries to the system registry. STDAPI DllRegisterServer(void) { // registers object, typelib and all interfaces in typelib HRESULT hr = _AtlModule.DllRegisterServer(); return hr; } // DllUnregisterServer - Removes entries from the system registry. STDAPI DllUnregisterServer(void) { HRESULT hr = _AtlModule.DllUnregisterServer(); return hr; } // DllInstall - Adds/Removes entries to the system registry per user per machine. STDAPI DllInstall(BOOL bInstall, LPCWSTR pszCmdLine) { HRESULT hr = E_FAIL; static const wchar_t szUserSwitch[] = L"user"; if (pszCmdLine != NULL) { if (_wcsnicmp(pszCmdLine, szUserSwitch, _countof(szUserSwitch)) == 0) { ATL::AtlSetPerUserRegistration(true); } } if (bInstall) { hr = DllRegisterServer(); if (FAILED(hr)) { DllUnregisterServer(); } } else { hr = DllUnregisterServer(); } return hr; } .