can activex control export large data to container by event's para

can activex control export large data to container by event's para ?

I develop a activex control,and want to export large data to
container(IE),web page can use javascript to capture the event,and then
utilize the event's para to do more things.

First ,I am not sure how much data can be exported by control event's para ?

Second,I don't want to export large data by so many paras,such as
largedataevent(para1,para2,para3,...... )

What I want to know is whether it is possible or not that control can export
large data to container(IE) by OBJECT ? Such that ,I can define an object in
the control
,and warp so many para(para1,para2,para3......) in the object,like :
typedef struct
{
para1,
para2,
para3
}myobject
and just export the object like : largedataevent(myobject) to the
container(IE),can I ?

Thank you very much