DWG and DWF ActiveX viewer control with method to change layer status

[michel.brites]

Hi

I need an activex control to view dwg and dwf files (I will use it into VB6 form) that allows to show or to hide layers through programming. The system's users will not change the layers manually, my system will do it depending on the user's account. So, I need a control that has an API with methods to manipulate layers.

I have read about Design Review API and DWG Trueview API, but they do not allow to manipulate layers' status (on / off), and I need to put the viewer inside the form.

Thanks.