dllreg.cpp

Windows Shell扩展编程完全指南 2

// DLLReg.cpp : Implementation of DLL Exports.

// Note: Proxy/Stub Information
//      To build a separate proxy/stub DLL, 
//      run nmake -f DLLRegps.mk in the project directory.

#include "stdafx.h"
#include "resource.h"
#include <initguid.h>
#include "DLLReg.h"
#include "DLLReg_i.c"
#include "DLLRegShlExt.h"

CComModule _Module;

BEGIN_OBJECT_MAP(ObjectMap)
OBJECT_ENTRY(CLSID_DLLRegShlExt, CDLLRegShlExt)
END_OBJECT_MAP()

/////////////////////////////////////////////////////////////////////////////
// DLL Entry Point

extern "C"
BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID /*lpReserved*/)
{
    if ( dwReason == DLL_PROCESS_ATTACH )
        {
        _Module.Init(ObjectMap, hInstance, &LIBID_DLLREGLib);
        DisableThreadLibraryCalls(hInstance);
        }
    else if (dwReason == DLL_PROCESS_DETACH)
        _Module.Term();

    return TRUE;    // ok
}


/////////////////////////////////////////////////////////////////////////////
// Used to determine whether the DLL can be unloaded by OLE

STDAPI DllCanUnloadNow(void)
{
    return (_Module.GetLockCount()==0) ? S_OK : S_FALSE;
}


/////////////////////////////////////////////////////////////////////////////
// Returns a class factory to create an object of the requested type

STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv)
{
    return _Module.GetClassObject(rclsid, riid, ppv);
}


/////////////////////////////////////////////////////////////////////////////
// DllRegisterServer - Adds entries to the system registry

STDAPI DllRegisterServer(void)
{
    // If we're on NT, add ourselves to the list of approved shell extensions.
    if ( 0 == (GetVersion() & 0x80000000UL) )
        {
        CRegKey reg;
        LONG    lRet;

        lRet = reg.Open ( HKEY_LOCAL_MACHINE,
                          _T("Software\\Microsoft\\Windows\\CurrentVersion\\Shell Extensions\\Approved"),
                          KEY_SET_VALUE );

        if ( ERROR_SUCCESS != lRet )
            return E_ACCESSDENIED;

        lRet = reg.SetValue ( _T("DllRegShlExt extension"),
                              _T("{8AB81E72-CB2F-11D3-8D3B-AC2F34F1FA3C}") );

        if ( ERROR_SUCCESS != lRet )
            return HRESULT_FROM_WIN32(lRet);
        }

    // registers object, typelib and all interfaces in typelib
    return _Module.RegisterServer(false);
}

/////////////////////////////////////////////////////////////////////////////
// DllUnregisterServer - Removes entries from the system registry

STDAPI DllUnregisterServer(void)
{
    // If we're on NT, remove ourselves from the list of approved shell extensions.
    // Note that if we get an error along the way, I don't bail out since I want
    // to do the normal ATL unregistration stuff too.
    if ( 0 == (GetVersion() & 0x80000000UL) )
        {
        CRegKey reg;
        LONG    lRet;

        lRet = reg.Open ( HKEY_LOCAL_MACHINE,
                          _T("Software\\Microsoft\\Windows\\CurrentVersion\\Shell Extensions\\Approved"),
                          KEY_SET_VALUE );

        if ( ERROR_SUCCESS == lRet )
            lRet = reg.DeleteValue ( _T("{8AB81E72-CB2F-11D3-8D3B-AC2F34F1FA3C}") );
        }

    return _Module.UnregisterServer(false);
}