Failure to obtain the download manager component

[Oliveiros Cristina]

 Hello All,

 

 I am trying to obtain a pointer to the dowload manager component, but the nsIServiceManager::GetServiceByContractId()  method  simply causes an access violation when I call it this way :

 

 unRetVal = spiServManager -> GetServiceByContractID("@mozilla.org/download-manager;1",
                                                     NS_GET_IID(nsIDownloadManager),
                                                     getter_AddRefs(spiGestorDownload));

 

 

 

I have already tried to call it this way

 

 unRetVal = spiServManager -> GetServiceByContractID("@mozilla.org/download-manager;1",
                                                     NS_GET_IID(nsISupports),
                                                     getter_AddRefs(spiGestorDownload));

 

but the result was precisely the same :(

 

Is the ContractId wrong ? But even so , the method should report failure and not causing an access violation

 

Has anyone already experienced this strange behavior?

Can anyone kindly give me a help with this issue, please?

 

Thank you very much in advance

 

Oliveiros