I trying to enable domain events callbacks under a cross compiled (mingwin under fedora12 env) libvirt 0.7.4 (I haven't been able to compile more recent versions under mingwin) dll. Here a little sample of code I'm trying to write :

static int domain_event(virConnectPtr conn,
          virDomainPtr dom,
          int evt,
          int detail,
          void *opaque)
{
bool test = true;
return 0;
}

int _tmain(int argc, _TCHAR* argv[])
{
virConnectPtr conn = virConnectOpen("qemu+tcp://192.168.220.198/session");
// Set Callback
int cbresult = virConnectDomainEventRegister(conn, domain_event, NULL, NULL);
// Lookup Domain
    virDomainPtr dom = virDomainLookupByName(conn, "Test1");
// Start Domain
int startDom = virDomainCreate(dom);
if (startDom != 0)
{
  virErrorPtr e = virGetLastError();
  bool test = true;
}
// Wait
Sleep(60000);
// Stop Domain
int StopDom = virDomainDestroy(dom);
if (StopDom != 0)
{
  virErrorPtr e = virGetLastError();
  bool test = true;
}
return 0;
}

I'm able to connect to the host and I'm able to start the domain, but when I enable callback with "virConnectDomainEventRegister", it fails, I have a message "unmarshalling msg" coming from the "remoteDomainReadEvent" method of remote_driver.c in libvirt.