If you need to host licensed controls, or controls that have other specialized initialization needs, you will need to create the control yourself before attaching it to a host window. You can do this using the following steps:
Create the control (for example, use IClassFactory2).
Initialize the control (for example, call IPersistStreamInit::New or IPersistStreamInit::Load).
Create a CAxWindow2T Class object.
Call CAxWindow::Create with an empty string as the title (this will create an "AtlAxWin80" window and host object without loading a control).
Call CAxWindow::QueryHost to get the IAxWinHostWindow interface of the host object.
Call IAxWinHostWindow::AttachControl to attach the control you just created to its container.