AGAIN: questions swt + mozilla

[jml]

Had some question posted several days ago, but not getting any answer, so repost them again.

I am having some fun trying to combine swt and mozilla (xpcom) together, I achieved in making the following java code to run:

public static void main(String[] args) {
Embed.NS_InitEmbedding(0,0);
nsIComponentRegistrar registrar = Embed.getComponentRegistrar();
nsISimpleEnumerator enum = registrar.enumerateContractIDs();
int count = 0;
while( enum.hasMoreElements()) {
nsISupports s = enum.getNext();
nsISupportsCString cstring = (nsISupportsCString)s.queryInterface(nsISupportsCString.class);
s.Release();
System.out.println(cstring.toString());
cstring.Release();
}
Embed.NS_TermEmbedding();
}

It give me a list of registered components:
@mozilla.org/persistent-properties;1
@mozilla.org/file/local;1
@mozilla.org/supports-PRUint64;1
......

But there is no
"@mozilla.org/embedding/browser/nsWebBrowser;1"

1. I am using a default mozilla 1.2.1 installation (that is I downloaded from mozilla web site, and unzipped to C:\mozilla). What do I need to do to make the webbrowser component to be auto registered?

2. For the nsISupportsCString.toString() method, I receive a "string" pointer, do I need to call any method to release the memory associated with it? If yes, which method should I call? NS_GetMemoryManager.free(ptr)? I tried this, but seemed it do not return NS_OK.

3. How can I get the nsIStringService service object? I want to use it to do nsAString -->wstring (nsACString --> string) conversion. Then I needn't implement nsAString and nsACString in my native code.


Thanks

jml