The ActiveX Designer framework consists of a set of base classes that provide default implementations for designer-specific interfaces. By deriving your designer class from one or more of these base classes, you can create a skeleton designer with the basic features you need.
You can create a designer that uses the framework in either of two ways:
Using the Wizard
To use the wizard in Visual C++, see Building the ActiveX Designer Wizard.
Implementing Classes from the Framework
The Framework Tutorial covers designer implementation from the point of view of a reader who is familiar with using ATL and the ATL Control Wizard to create ActiveX controls. Follow the tutorial and see the Framework Reference to extend an ActiveX control into a designer.