Adding an ATL Control
Use this wizard to add a user interface object to a project that supports interfaces for all potential containers. To support these interfaces, the project must have been created as an ATL application or as an MFC application that contains ATL support. You can use the ATL Project Wizard to create an ATL application, or add an ATL object to your MFC application to implement ATL support for an MFC application.
To add an ATL control to your project
Click Add from the shortcut menu, and then click Add Class.
Using the ATL Control Wizard, you can create one of three types of controls:
A standard control
A composite control
A DHTML control
Additionally, you can reduce the size of the control and remove interfaces that are not used by most containers by selecting Minimal control on the Options page of the wizard.