Configuring Siebel eBusiness Applications > Configuring Special Purpose Controls >
An ActiveX control is a self-contained program unit that can be run from within other programs. An ActiveX control typically registers itself in the Windows registry. In Siebel applications, any registered ActiveX control can be incorporated in an applet. This provides the means to add one or more specialized features to an applet, such as a slider or media player. You can also embed entire applications that are available as ActiveX controls.
NOTE: ActiveX controls will work in most environments, but the programming environment itself may or may not support it. For example, trying to insert a Siebel ActiveX application control into an Excel worksheet generates a "Cannot insert object" error.
Certain third-party ActiveX controls, for example Microsoft Web Browser, Microsoft Rich Textbox, and CTreeView, do not work with Siebel applications and are not supported.