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News on libwww and msvc 4.0

From: Henrik Frystyk Nielsen <frystyk@w3.org>
Date: Thu, 08 Feb 1996 11:16:58 -0500
Message-Id: <9602081617.AA18747@www20>
To: www-lib@w3.org

Thanks a lot for the many inputs on getting the Windows version working. Eric 
and I have got the windoes handle problem right which turned out not to be due 
to compatibility problems with other windos platforms. The code (the 
interesting part is between the parts

#ifdef WWW_WIN_ASYNC

	...

#endif

is included below. It is taken from HTAccess.c in the library code.

Now, we still have the memory error to fix. Anders Borg <Anders.Borg@axis.se> 
has worked on it as well and mentions that it works if using a static library 
instead of DLLs. That leaves me to believe that the DLL interface has changed 
for this version of msvc.

So the big question is: Does anybody have any idea how we can get this to work?

Thanks for any input!

Henrik


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/*								     HTLibInit
**
**	This function initiates the Library and it MUST be called when
**	starting up an application. See also HTLibTerminate()
*/
PUBLIC BOOL HTLibInit (CONST char * AppName, CONST char * AppVersion)
{
#ifdef WWW_WIN_ASYNC
    /*
    **	We are here starting a hidden window to take care of events from
    **  the async select() call in the async version of the event loop in
    **	the Internal event manager (HTEvntrg.c)
    */
    HWND htSocketWin;
    static char className[] = "AsyncWindowClass";
    WNDCLASS wc;
    OSVERSIONINFO osInfo;
    
    wc.style=0;
    wc.lpfnWndProc=(WNDPROC)AsyncWindowProc;
    wc.cbClsExtra=0;
    wc.cbWndExtra=0;
    wc.hIcon=0;
    wc.hCursor=0;
    wc.hbrBackground=0;
    wc.lpszMenuName=(LPSTR)0;
    wc.lpszClassName=className;

    osInfo.dwOSVersionInfoSize = sizeof(osInfo);
    GetVersionEx(&osInfo);
    if (osInfo.dwPlatformId == VER_PLATFORM_WIN32s || osInfo.dwPlatformId == 
VER_PLATFORM_WIN32_WINDOWS)
	wc.hInstance=GetModuleHandle(NULL); /* 95 and non threaded platforms */
    else
	wc.hInstance=GetCurrentProcess(); /* NT and hopefully everything following */
#endif /* WWW_WIN_ASYNC */

#if WWWTRACE_MODE == WWWTRACE_FILE			  /* Open trace file */
    if ((TDEST = fopen(HT_TRACE_FILE, "a")) != NULL) {
	if (setvbuf(TDEST, NULL, _IOLBF, 0) < 0) {  /* Change to line buffer */
	    TTYPrint(TDEST, "WWWLibInit.. Can't initialize TRACE buffer - no 
TRACE\n");
	    fclose(TDEST);
	    TDEST = NULL;
	    WWW_TraceFlag = 0;
	}
    } else
	WWW_TraceFlag = 0;
#endif /* WWWTRACE_FILE */

    if (WWWTRACE)
	TTYPrint(TDEST, "WWWLibInit.. INITIALIZING LIBRARY OF COMMON CODE\n");

    /* Set the application name and version */
    if (AppName) {
	char *ptr;
	StrAllocCopy(HTAppName, AppName);
	ptr = HTAppName;
	while (*ptr) {
	    if (WHITE(*ptr)) *ptr = '_';
	    ptr++;
	}
    }
    if (AppVersion) {
	char *ptr;
	StrAllocCopy(HTAppVersion, AppVersion);
	ptr = HTAppVersion;
	while (*ptr) {
	    if (WHITE(*ptr)) *ptr = '_';
	    ptr++;
	}
    }

    HTBind_init();				      /* Initialize bindings */

#ifdef WWWLIB_SIG
    /* On Solaris (and others?) we get a BROKEN PIPE signal when connecting
    ** to a port where we should get `connection refused'. We ignore this 
    ** using the following function call
    */
    HTSetSignal();				   /* Set signals in library */
#endif

#ifdef WWW_WIN_ASYNC
    if (!RegisterClass(&wc)) {
    	TTYPrint(TDEST, "HTEvent_Loop.. Can't RegisterClass \"%s\"\n", className);
	    return NO;
    }
    if (!(htSocketWin = CreateWindow(className, "WWW_WIN_ASYNC", WS_POPUP, 
CW_USEDEFAULT, CW_USEDEFAULT, 
                                     CW_USEDEFAULT, CW_USEDEFAULT, 0, 0, 
wc.hInstance,0))) {
	char space[50];
       	TTYPrint(TDEST, "HTEvent_Loop.. Can't CreateWindow \"WWW_WIN_ASYNC\" - 
error:");
	sprintf(space, "%ld\n", GetLastError());
	TTYPrint(TDEST, space);
    	return NO;
    }
    HTEvent_setWinHandle (htSocketWin, WM_USER);     /* use first available 
message since app uses none */
#endif /* WWW_WIN_ASYNC */

#ifdef _WINSOCKAPI_
    /*
    ** Initialise WinSock DLL. This must also be shut down! PMH
    */
    {
        WSADATA            wsadata;
	if (WSAStartup(DESIRED_WINSOCK_VERSION, &wsadata)) {
	    if (WWWTRACE)
		TTYPrint(TDEST, "WWWLibInit.. Can't initialize WinSoc\n");
            WSACleanup();
            return NO;
        }
        if (wsadata.wVersion < MINIMUM_WINSOCK_VERSION) {
            if (WWWTRACE)
		TTYPrint(TDEST, "WWWLibInit.. Bad version of WinSoc\n");
            WSACleanup();
            return NO;
        }
    }
#endif /* _WINSOCKAPI_ */

#ifndef NO_TIMEGM
    HTGetTimeZoneOffset();	   /* Find offset from GMT if using mktime() */
#endif
    HTTmp_setRoot(NULL);		     /* Set up default tmp directory */
    return YES;
}
Received on Thursday, 8 February 1996 11:17:07 GMT

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