🚀 go-pugleaf

"Schandler" <theslider@programmer.net> wrote in message
news:3f433f98@newsgroups.borland.com...

> I'm not expierenced with memory mapped file, so if there is
> an example or something that demonestrates the usage of
> CreateFileMapping() and MapViewOfFile(), it would be
> nice if u tell me where can I find it

    struct _HookInfo
    {
        HHOOK hHook;
        HWND hWnd;
    } HOOKINFO, *PHOOKINFO;

    HANDLE hFileMapping = NULL;
    PHOOKINFO pHookInfo = NULL;

    BOOL WINAPI DllEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID
lpvReserved)
    {
        switch( fdwReason )
        {
            case DLL_PROCESS_ATTACH:
                hFileMapping = CreateFileMapping(INVALID_HANDLE_VALUE, NULL,
PAGE_READWRITE, 0,  sizeof(HOOKINFO), "MyHook");
                if( hFileMapping )
                    pHookInfo = (MyStruct*)MapViewOfFile(hFileMapping,
FILE_MAP_WRITE, 0, 0, 0);
                break;

            case DLL_PROCESS_DETACH:
                UnmapViewOfFile(pHookInfo);
                pHookInfo = NULL;
                CloseHandle(hFileMapping);
                hFileMapping = NULL;
                break;
        }

        return TRUE;
    }

    extern "C" __declspec(dllexport) int __stdcall SetHook(HWND hWnd)
    {
        if( pHookInfo )
        {
            if( pHookInfo->hHook == NULL )
                pHookIno->hHook = SetWindowsHookEx(...);
            pHookInfo->hWnd = hWnd;
            return ( pHookInfo->hHook != NULL );
        }
        return FALSE;
    }

    extern "C" __declspec(dllexport) void __stdcall UnsetHook()
    {
        if( pHookInfo )
        {
            if( pHookInfo->hHook )
            {
                UnhookWindowsHookEx(pHookIno->hHook);
                pHookInfo->hHook = NULL;
            }
        }
    }


Gambit



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