Re: Sample client

RL Clippard wrote:
> Does  "nsResult = NS_InitXPCOM2(nsnull, nsnull, nsnull);" have to supply the
> directory to the Netscape components or does it 'know'? 

On Windows you have to tell it.  Linux knows.  I can't recall the 
details of exactly why, but this was certainly the case 18 months ago. 
I guess it is still the same.

> Also my version of
> Netscape (6.2) xpcom.dll does not allow NS_InitXPCOM2() - I assumed this is
> just a minor issue so I am using the xpcom.dll that came with mozilla.9.9.
> 
> //-nsLocalFile
>      nsCOMPtr<nsILocalFile> componentPath=0;
>      componentPath= do_CreateInstance(NS_LOCAL_FILE_CONTRACTID,&nsResult);
> 
>      const char *path = "C:\\Program Files\\Netscape\\Netscape 6";
> // Where Netscape is installed
>      nsResult = componentPath->InitWithPath(path);
> 
>      PRBool isDirectory;
>      nsResult = componentPath->IsDirectory(&isDirectory);
>      printf("%s ---<%s>--- a directory\n",path,isDirectory?"IS":"IS NOT");
> // This works (is indeed a directory)
> 
> //-initXPCOM
>      nsIServiceManager *serviceManager=0;
>      nsResult = NS_InitXPCOM2(&serviceManager, componentPath, nsnull);
> // This fails! ---> 0x80004005

This is from the PyXPCOM code (mozilla/extensions/python/xpcom)

...
     nsCOMPtr<nsIThread> thread_check;
     // xpcom appears to assert if already initialized
     // Is there an official way to determine this?
     if 
(NS_FAILED(nsIThread::GetMainThread(getter_AddRefs(thread_check)))) {
         // not already initialized.

         // We need to locate the Mozilla bin directory.
#ifdef XP_WIN			
         // On Windows this by using "xpcom.dll"

         char landmark[MAX_PATH+1];
         HMODULE hmod = GetModuleHandle("xpcom.dll");
         if (hmod==NULL) {
             PyErr_SetString(PyExc_RuntimeError, "We dont appear to be 
linked against xpcom.dll!?!?");
             return PR_FALSE;
         }
         GetModuleFileName(hmod, landmark, 
sizeof(landmark)/sizeof(landmark[0]));
         char *end = landmark + (strlen(landmark)-1);
         while (end > landmark && *end != '\\')
             end--;
         if (end > landmark) *end = '\0';

         nsCOMPtr<nsILocalFile> ns_bin_dir;
         NS_NewLocalFile(landmark, PR_FALSE, getter_AddRefs(ns_bin_dir));
         nsresult rv = NS_InitXPCOM2(nsnull, ns_bin_dir, nsnull);
#else
         // Elsewhere, Mozilla can find it itself (we hope!)
         nsresult rv = NS_InitXPCOM2(nsnull, nsnull, nsnull);
#endif // XP_WIN			
         if (NS_FAILED(rv)) {
...

Mark.