[vbox-dev] help me:ISession->get_Console return null

[iamhatling]

sorry for my bad english

i want to write a vbox frontend,
but i met a problem at the beginning,

when i call "ISession->get_Console " to get the console interface ,it return null,
the following is my code


+++++++++++++++++++++++++++++++++++++++++++++++++
IVirtualBox *virtualBox;
IVirtualBoxClient* virtualBoxClient;

CoInitialize(NULL);
CoCreateInstance(
CLSID_VirtualBoxClient,
NULL,
CLSCTX_INPROC_SERVER,
IID_IVirtualBoxClient,
(void**)&virtualBoxClient
);

ISession* session;
virtualBoxClient->get_Session(&session);
virtualBoxClient->get_VirtualBox(&virtualBox);

IMachine* machineTemp;
BSTR machineName = SysAllocString(L"xp");
virtualBox->FindMachine(machineName,&machineTemp);
SysFreeString(machineName);

machineTemp->LockMachine(session,LockType_VM);

IMachine* machine;
session->get_Machine(&machine);

IConsole* console;
session->get_Console(&console);////////////console=null here
+++++++++++++++++++++++++++++++++++++++





iamhatling
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[Klaus Espenlaub]

Hi,

Post by iamhatling
sorry for my bad english
i want to write a vbox frontend,
but i met a problem at the beginning,
when i call "ISession->get_Console " to get the console interface ,it return null,
the following is my code

Hard to tell what's going wrong, as you're not checking any result code.

Your code looks superficially OK, no idea what exactly is failing. Must
be something related to the session/locking...

Klaus