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419 lines
12 KiB
419 lines
12 KiB
/****************************************************************************
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MODULE: SW_CFact.CPP
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Tab Settings: 5 9
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Copyright 1995, 1996, Microsoft Corporation, All Rights Reserved.
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PURPOSE: Class Object structured in a DLL server.
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FUNCTIONS:
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Author(s): Name:
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---------- ----------------
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MEA Manolito E. Adan
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Revision History:
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-----------------
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Version Date Author Comments
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------- ------ ----- -------------------------------------------
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1.0 06-Feb-97 MEA original, Based on SWForce
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23-Feb-97 MEA Modified for DirectInput FF Device Driver
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****************************************************************************/
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#include "SW_CFact.hpp"
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#include "SWD_Guid.hpp"
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// Needed for auto registration
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#include "Registry.h"
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#include "CritSec.h"
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#include "olectl.h" // Self Reg errors
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// Define CriticalSection object for everyone
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CriticalSection g_CriticalSection;
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//
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// Global Data
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//
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ULONG g_cObj=0; //Count number of objects and number of locks.
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ULONG g_cLock=0;
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HINSTANCE g_MyInstance = NULL;
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//
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// External Functions
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//
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//
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// Internal Function Prototypes
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//
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//
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// External Data
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//
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#ifdef _DEBUG
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extern char g_cMsg[160];
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#endif
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#define BUFSIZE 80
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/*
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* LibMain(32)
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*
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* Purpose:
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* Entry point provides the proper structure for each environment.
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*/
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BOOL WINAPI DllMain(HINSTANCE hInstance, ULONG ulReason, LPVOID pvReserved)
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{
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switch (ulReason)
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{
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case DLL_PROCESS_ATTACH: {
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//
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// DLL is attaching to the address space of the current process.
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//
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g_MyInstance = hInstance;
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#ifdef _DEBUG
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_RPT0(_CRT_WARN, "SW_WHEEL.DLL: DLL_PROCESS_ATTACH\r\n");
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#endif
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return (TRUE);
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}
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case DLL_THREAD_ATTACH:
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//
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// A new thread is being created in the current process.
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//
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#ifdef _DEBUG
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_RPT0(_CRT_WARN, "SW_WHEEL.DLL: DLL_THREAD_ATTACH\r\n");
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#endif
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break;
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case DLL_THREAD_DETACH:
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//
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// A thread is exiting cleanly.
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//
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#ifdef _DEBUG
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_RPT0(_CRT_WARN, "SW_WHEEL.dll: DLL_THREAD_DETACH\r\n");
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#endif
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break;
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case DLL_PROCESS_DETACH:
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//
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// The calling process is detaching the DLL from its address space.
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//
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#ifdef _DEBUG
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_RPT0(_CRT_WARN, "SW_WHEEL.dll: DLL_PROCESS_DETACH\r\n");
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#endif
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break;
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}
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return(TRUE);
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}
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// ----------------------------------------------------------------------------
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// Function: DllGetClassObject
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//
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// Purpose: Provides an IClassFactory for a given CLSID that this DLL is
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// registered to support. This DLL is placed under the CLSID
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// in the registration database as the InProcServer.
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//
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// Parameters: REFCLSID clsID - REFCLSID that identifies the class factory
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// desired. Since this parameter is passed this
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// DLL can handle any number of objects simply
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// by returning different class factories here
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// for different CLSIDs.
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//
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// REFIID riid - REFIID specifying the interface the caller
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// wants on the class object, usually
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// IID_ClassFactory.
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//
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// PPVOID ppv - PPVOID in which to return the interface ptr.
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//
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// Returns: HRESULT NOERROR on success, otherwise an error code.
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// Algorithm:
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// ----------------------------------------------------------------------------
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STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, PPVOID ppv)
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{
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HRESULT hr;
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CDirectInputEffectDriverClassFactory *pObj;
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#ifdef _DEBUG
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_RPT0(_CRT_WARN, "SW_WHEEL.dll: DllGetClassObject()\r\n");
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#endif
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if (CLSID_DirectInputEffectDriver !=rclsid) return ResultFromScode(E_FAIL);
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pObj=new CDirectInputEffectDriverClassFactory();
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if (NULL==pObj) return ResultFromScode(E_OUTOFMEMORY);
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hr=pObj->QueryInterface(riid, ppv);
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if (FAILED(hr)) delete pObj;
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return hr;
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}
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// ----------------------------------------------------------------------------
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// Function: DllCanUnloadNow
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//
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// Purpose: Answers if the DLL can be freed, that is, if there are no
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// references to anything this DLL provides.
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//
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//
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// Parameters: none
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//
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// Returns: BOOL TRUE if nothing is using us, FALSE otherwise.
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// Algorithm:
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// ----------------------------------------------------------------------------
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STDAPI DllCanUnloadNow(void)
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{
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SCODE sc;
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//Our answer is whether there are any object or locks
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sc=(0L==g_cObj && 0L==g_cLock) ? S_OK : S_FALSE;
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return ResultFromScode(sc);
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}
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// ----------------------------------------------------------------------------
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// Function: ObjectDestroyed
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//
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// Purpose: Function for the DirectInputEffectDriver object to call when it gets destroyed.
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// Since we're in a DLL we only track the number of objects here,
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// letting DllCanUnloadNow take care of the rest.
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//
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// Parameters: none
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//
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// Returns: BOOL TRUE if nothing is using us, FALSE otherwise.
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// Algorithm:
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// ----------------------------------------------------------------------------
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void ObjectDestroyed(void)
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{
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g_cObj--;
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return;
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}
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// ----------------------------------------------------------------------------
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// Function: DllRegisterServer
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//
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// Purpose: Auto-magically puts default entries into registry
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//
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// Parameters: NONE
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//
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// Returns: HRESULT - S_OK on success.
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// ----------------------------------------------------------------------------
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STDAPI DllRegisterServer(void)
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{
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// Register CLSID for DIEffectDriver
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// -- Get HKEY_CLASSES_ROOT\CLSID key
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RegistryKey classesRootKey(HKEY_CLASSES_ROOT);
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RegistryKey clsidKey = classesRootKey.OpenSubkey(TEXT("CLSID"), KEY_READ | KEY_WRITE);
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if (clsidKey == c_InvalidKey) {
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return E_UNEXPECTED; // No CLSID key????
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}
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// -- If the key is there get it (else Create)
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RegistryKey driverKey = clsidKey.OpenCreateSubkey(CLSID_DirectInputEffectDriver_String);
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// -- Set value (if valid key)
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if (driverKey != c_InvalidKey) {
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driverKey.SetValue(NULL, (BYTE*)DRIVER_OBJECT_NAME, sizeof(DRIVER_OBJECT_NAME)/sizeof(TCHAR), REG_SZ);
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RegistryKey inproc32Key = driverKey.OpenCreateSubkey(TEXT("InProcServer32"));
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if (inproc32Key != c_InvalidKey) {
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TCHAR fileName[MAX_PATH];
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DWORD nameSize = ::GetModuleFileName(g_MyInstance, fileName, MAX_PATH);
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if (nameSize > 0) {
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fileName[nameSize] = '\0';
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inproc32Key.SetValue(NULL, (BYTE*)fileName, sizeof(fileName)/sizeof(TCHAR), REG_SZ);
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}
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inproc32Key.SetValue(TEXT("ThreadingModel"), (BYTE*)THREADING_MODEL_STRING, sizeof(THREADING_MODEL_STRING)/sizeof(TCHAR), REG_SZ);
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}
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// NotInsertable ""
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RegistryKey notInsertableKey = driverKey.OpenCreateSubkey(TEXT("NotInsertable"));
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if (notInsertableKey != c_InvalidKey) {
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notInsertableKey.SetValue(NULL, (BYTE*)TEXT(""), sizeof(TEXT(""))/sizeof(TCHAR), REG_SZ);
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}
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// ProgID "Sidewinder ForceFeedback blah blah2.0"
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RegistryKey progIDKey = driverKey.OpenCreateSubkey(TEXT("ProgID"));
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if (progIDKey != c_InvalidKey) {
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progIDKey.SetValue(NULL, (BYTE*)PROGID_NAME, sizeof(PROGID_NAME)/sizeof(TCHAR), REG_SZ);
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}
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// VersionIndpendentProgID "Sidewinder ForceFeedback blah blah"
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RegistryKey progIDVersionlessKey = driverKey.OpenCreateSubkey(TEXT("VersionIndpendentProgID"));
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if (progIDVersionlessKey != c_InvalidKey) {
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progIDVersionlessKey.SetValue(NULL, (BYTE*)PROGID_NOVERSION_NAME, sizeof(PROGID_NOVERSION_NAME)/sizeof(TCHAR), REG_SZ);
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}
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} else {
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return SELFREG_E_CLASS;
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}
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// Made it here valid driver key
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return S_OK;
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}
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// ----------------------------------------------------------------------------
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// Function: DllUnregisterServer
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//
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// Purpose: Auto-magically removed default entries from registry
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//
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// Parameters: NONE
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//
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// Returns: HRESULT - S_OK on success.
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// ----------------------------------------------------------------------------
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STDAPI DllUnregisterServer(void)
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{
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// Unregister CLSID for DIEffectDriver
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// -- Get HKEY_CLASSES_ROOT\CLSID key
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RegistryKey classesRootKey(HKEY_CLASSES_ROOT);
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RegistryKey clsidKey = classesRootKey.OpenSubkey(TEXT("CLSID"), KEY_READ | KEY_WRITE);
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if (clsidKey == c_InvalidKey) {
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return E_UNEXPECTED; // No CLSID key????
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}
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DWORD numSubKeys = 0;
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{ // driverKey Destructor will close the key
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// -- If the key is there get it, else we don't have to remove it
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RegistryKey driverKey = clsidKey.OpenSubkey(CLSID_DirectInputEffectDriver_String);
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if (driverKey != c_InvalidKey) { // Is it there
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driverKey.RemoveSubkey(TEXT("InProcServer32"));
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driverKey.RemoveSubkey(TEXT("NotInsertable"));
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driverKey.RemoveSubkey(TEXT("ProgID"));
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driverKey.RemoveSubkey(TEXT("VersionIndpendentProgID"));
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numSubKeys = driverKey.GetNumSubkeys();
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} else { // Key is not there (I guess removal was successful)
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return S_OK;
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}
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}
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if (numSubKeys == 0) {
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return clsidKey.RemoveSubkey(CLSID_DirectInputEffectDriver_String);
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}
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// Made it here valid driver key
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return S_OK;
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}
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/*
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* CVIObjectClassFactory::CVIObjectClassFactory
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* CVIObjectClassFactory::~CVIObjectClassFactory
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*
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* Constructor Parameters:
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* None
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*/
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CDirectInputEffectDriverClassFactory::CDirectInputEffectDriverClassFactory(void)
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{
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m_cRef=0L;
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return;
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}
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CDirectInputEffectDriverClassFactory::~CDirectInputEffectDriverClassFactory(void)
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{
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return;
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}
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/*
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* CDirectInputEffectDriverClassFactory::QueryInterface
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* CDirectInputEffectDriverClassFactory::AddRef
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* CDirectInputEffectDriverClassFactory::Release
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*/
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STDMETHODIMP CDirectInputEffectDriverClassFactory::QueryInterface(REFIID riid, PPVOID ppv)
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{
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*ppv=NULL;
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if (IID_IUnknown==riid || IID_IClassFactory==riid) *ppv=this;
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if (NULL!=*ppv)
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{
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((LPUNKNOWN)*ppv)->AddRef();
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return NOERROR;
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}
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return ResultFromScode(E_NOINTERFACE);
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}
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STDMETHODIMP_(ULONG) CDirectInputEffectDriverClassFactory::AddRef(void)
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{
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return ++m_cRef;
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}
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STDMETHODIMP_(ULONG) CDirectInputEffectDriverClassFactory::Release(void)
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{
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if (0L!=--m_cRef) return m_cRef;
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delete this;
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return 0L;
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}
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/*
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* CDirectInputEffectDriverClassFactory::CreateInstance
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*
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* Purpose:
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* Instantiates a DirectInputEffectDriver object returning an interface pointer.
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*
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* Parameters:
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* pUnkOuter LPUNKNOWN to the controlling IUnknown if we are
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* being used in an aggregation.
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* riid REFIID identifying the interface the caller
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* desires to have for the new object.
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* ppvObj PPVOID in which to store the desired
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* interface pointer for the new object.
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*
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* Return Value:
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* HRESULT NOERROR if successful, otherwise E_NOINTERFACE
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* if we cannot support the requested interface.
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*/
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STDMETHODIMP CDirectInputEffectDriverClassFactory::CreateInstance(LPUNKNOWN pUnkOuter,
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REFIID riid, PPVOID ppvObj)
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{
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PCDirectInputEffectDriver pObj;
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HRESULT hr;
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*ppvObj=NULL;
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hr=ResultFromScode(E_OUTOFMEMORY);
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//Verify that a controlling unknown asks for IUnknown
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if (NULL!=pUnkOuter && IID_IUnknown!=riid)
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return ResultFromScode(CLASS_E_NOAGGREGATION);
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//Create the object passing function to notify on destruction.
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pObj=new CDirectInputEffectDriver(pUnkOuter, ObjectDestroyed);
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if (NULL==pObj) return hr;
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if (pObj->Init()) hr=pObj->QueryInterface(riid, ppvObj);
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//Kill the object if initial creation or Init failed.
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if (FAILED(hr))
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delete pObj;
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else
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g_cObj++;
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return hr;
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}
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/*
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* CDirectInputEffectDriverClassFactory::LockServer
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*
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* Purpose:
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* Increments or decrements the lock count of the DLL. If the
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* lock count goes to zero and there are no objects, the DLL
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* is allowed to unload. See DllCanUnloadNow.
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*
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* Parameters:
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* fLock BOOL specifying whether to increment or
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* decrement the lock count.
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*
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* Return Value:
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* HRESULT NOERROR always.
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*/
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STDMETHODIMP CDirectInputEffectDriverClassFactory::LockServer(BOOL fLock)
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{
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if (fLock)
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g_cLock++;
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else
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g_cLock--;
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return NOERROR;
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}
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