Gets its DOM object in a Web page when OCX is initialized

When OCX initializes, it calls SetClientSite and passes in the IOleClientSite object.

1     Ccomqiptr<iolecontrolsite, &IID_IOleControlSite> spSite (pclientsite); 2     ccomdispatchdriver ecdisp; 3     Spsite->getextendedcontrol (&ECDISP);

As above code, according to the IOleClientSite object, we can get IOleControlSite object, and then through the IOleControlSite object Getextendedcontrol method can get OCX in the Web page DOM object.

Note : If you dynamically create OCX by using JavaScript code createelement, appendchild mode, In the IE11 setclientsite call Getextendedcontrol can get to the object, but in IE9 is not getting the object (other versions are not measured). How to dynamically create the OCX, but also to make SetClientSite call Getextendedcontrol can get to the object, see my other article.

Gets its DOM object in a Web page when OCX is initialized