onprogress property
Sets or retrieves a pointer to the event handler function associated with the onprogress event.
Syntax
HRESULT value = object.put_onprogress(VARIANT v);HRESULT value = object.get_onprogress(VARIANT* p);
Property values
Type: VARIANT
the IDispatch interface of an object with a default method that is invoked when the event occurs.