private void QueryInterface(IntPtr punk, Guid iid, Dictionary <IntPtr, string> module_names, HashSet <COMInterfaceInstance> list)
{
if (punk != IntPtr.Zero)
{
IntPtr ppout;
if (Marshal.QueryInterface(punk, ref iid, out ppout) == 0)
{
IntPtr vtable = Marshal.ReadIntPtr(ppout, 0);
COMInterfaceInstance intf;
using (SafeLibraryHandle module = COMUtilities.SafeGetModuleHandle(vtable))
{
if (_clsctx == CLSCTX.INPROC_SERVER && module != null)
{
if (!module_names.ContainsKey(module.DangerousGetHandle()))
{
module_names[module.DangerousGetHandle()] = module.GetModuleFileName();
}
intf = new COMInterfaceInstance(iid,
module_names[module.DangerousGetHandle()],
vtable.ToInt64() - module.DangerousGetHandle().ToInt64());
}
else
{
intf = new COMInterfaceInstance(iid);
}
}
list.Add(intf);
Marshal.Release(ppout);
}
}
}