Problem in accessing the mozilla component

[Nikhil Kadu]

Hi all ,

 

I have written a simple program in c++ to access the XPCOM component in mozilla build. I got the run time error when i executed following program:

 

Line which failed to execute successfully:

rv = NS_InitXPCOM2(getter_AddRefs(servMan),nsnull, nsnull);

 

Error:

ERROR: XPCOM intialization error [c1f30001].

 

My code:

 

#include "C:\gecko-sdk\xpcom\include\nsMemory.h"
#else
#include "nsXPIDLString.h"
#endif

#define NS_HELLO_CONTRACTID "@mozilla.org/websample;1"

int main(void)
{
    nsresult rv;
    // Initialize XPCOM
    nsCOMPtr<nsIServiceManager> servMan;
 
    rv = NS_InitXPCOM2(getter_AddRefs(servMan),nsnull, nsnull);//

    if (NS_FAILED(rv))
    {
        printf("ERROR: XPCOM intialization error [%x].\n", rv);
        return -1;
    }

    // register all components in our default component directory
    nsCOMPtr<nsIComponentRegistrar> registrar = do_QueryInterface(servMan);

    NS_ASSERTION(registrar, "Null nsIComponentRegistrar");

    registrar->AutoRegister(nsnull);
   
    nsCOMPtr<nsIComponentManager> manager = do_QueryInterface(registrar);

    NS_ASSERTION(registrar, "Null nsIComponentManager");   

    // Create an instance of our component
    nsCOMPtr<nsIHello> myhello;

    rv = manager->CreateInstanceByContractID(NS_HELLO_CONTRACTID,
                                             nsnull,
                                             NS_GET_IID(nsIHello),
                                             getter_AddRefs(myhello));
    if (NS_FAILED(rv))
    {
        printf("ERROR: Cannot create instance of component " NS_HELLO_CONTRACTID " [%x].\n"
               "Debugging hint:\n"
               "\tsetenv NSPR_LOG_MODULES nsComponentManager:5\n"
               "\tsetenv NSPR_LOG_FILE xpcom.log\n"
               "\t./nsTestHello\n"
               "\t<check the contents for xpcom.log for possible cause of error>.\n",
               rv);
        return -2;
    }
 

    // Call methods on our Hello to test it out.
    rv = myhello->Write();
    if (NS_FAILED(rv))
    {
        printf("ERROR: Calling nsIHello::Write() [%x]\n", rv);
        return -3;
    }
/*
    const char *testValue = "XPCOM ";

    rv = myHello->change(testValue);

    if (NS_FAILED(rv))
    {
        printf("ERROR: Calling nsIHello::SetValue() [%x]\n", rv);
        return -3;
    }
    printf("Set value to: %s\n", yourname);

    // All nsCOMPtr's must be deleted prior to calling shutdown XPCOM
    // as we should not hold references passed XPCOM Shutdown.

 printf("\nkkk");

nsCOMPtr<nsIComponentManager> compMgr;
rv = NS_GetComponentManager(getter_AddRefs(compMgr));
if (NS_FAILED(rv)) return rv;
 
nsIHello* stringSupports;
compMgr->CreateInstanceByContractID(NS_HELLO_CONTRACTID, nsnull,NS_GET_IID(nsIHello),(void**)&stringSupports);
printf("\nrrrrkkk");
stringSupports->Write();

    servMan = 0;
    registrar = 0;
    manager = 0;
    myhello = 0;
  */ 
    // Shutdown XPCOM
    NS_ShutdownXPCOM(nsnull);
 
 return 0;
}

Can any body help me out

 

Nikhil Kadu

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