Re: XPCOM, regxpcom and firefox

[Sjoerd van Leent]

Alright, I got it so far that it now finds the DLL (seemed that I used 
the wrong Gecko SDK), however, The function call, which I now 
conveniently made to be "int getHelloWorld()" still doesn't seem to be 
fetched.

Also:
How can I dump a class and interface so that I now which methods are 
implemented?

Regards,
SJoerd
Sjoerd van Leent wrote:
Hi all,
I downloaded the latest gecko-sdk, which provided me with the most 
needed tools. I made a simple C++ implementation of a fairly simple 
"nsIHelloWorld" interface, only containing a "string GetHelloWorld()" 
method. This all goes well, see for code below.

All together it builds a DLL file called helloworld.dll and a .xpt file 
of the IDL interface. When pulling them into the components directory I 
run regxpcom to register both of them.

Now my components directory looks like:
components >
  ...
  helloworld.xpt
  helloworld.dll
  ...
  compreg.dat
  xpti.dat
This seems Okay. When digesting through the xpti.dat file, I clearly see 
that helloworld.xpt was found (yay), however, when looking into 
compreg.dat I can't find helloworld.dll.

My question: Where to put the helloworld.dll file, and how to register 
it properly, so it is usable with firefox/gecko.

Some extra information:
firefox: release 1.0 (release version)
os: windows (and linux, same problem)
Regards,
Sjoerd
--- CODE HelloWorld.cpp ---
#include "mozilla-config.h"
#include "nsIGenericFactory.h"
#include "nsXPCOM.h"
#include "nsIHelloWorld.h" // My generated IDL
#define nsHelloWorld_CID \
{0x777f7150, 0x4a2b, 0x4301, \
{0xad, 0x10, 0x5e, 0xab, 0x25, 0xb3, 0x22, 0xaa}}
#define nsHelloWorld_ContractID "@svanleent/nsHelloWorld"
char *helloWorld = "Hello World!";
class nsHelloWorld : public nsIHelloWorld
{
public:
    NS_DECL_ISUPPORTS
    NS_DECL_NSIHELLOWORLD
    nsHelloWorld();
private:
    ~nsHelloWorld();
};
NS_IMPL_ISUPPORTS1(nsHelloWorld, nsIHelloWorld)
nsHelloWorld::nsHelloWorld()
{
  /* member initializers and constructor code */
}
nsHelloWorld::~nsHelloWorld()
{
  /* destructor code */
}
/* string GetHelloWorld (); */
NS_IMETHODIMP nsHelloWorld::GetHelloWorld(char **_retval)
{
    *_retval = helloWorld;
    return NS_OK;
}
/*!
 * Register the components
 */
static NS_METHOD nsHelloWorldRegistration(nsIComponentManager *aCompMgr, 
nsIFile *path, const char *registryLocation, const char *componentType, 
const nsModuleComponentInfo *info) {
    /* Initialize service */

    return NS_OK;
}
/*!
 * Unregister the components
 */
static NS_METHOD nsHelloWorldUnregistration(nsIComponentManager 
*aCompMgr, nsIFile *path, const char *registryLocation, const 
nsModuleComponentInfo *info) {
    /* Uninitialize service */

    return NS_OK;
}
NS_GENERIC_FACTORY_CONSTRUCTOR(nsHelloWorld)
static const nsModuleComponentInfo components[] = {
    {
        "nsHelloWorld",
        nsHelloWorld_CID,
        nsHelloWorld_ContractID,
        nsHelloWorldConstructor,
        nsHelloWorldRegistration,
        nsHelloWorldUnregistration
    }
};
NS_IMPL_NSGETMODULE(nsHelloWorldModule, components)
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