With MapleSim it is possible to simulate electronic components. But it is not possible to build a model from an existing electric layout. This means, I have to copy for each electric part the data from the datasheet by hand and to connect them. For simple layout this is time consuming, for complex layouts it is impossible.
There are Layout software like EAGLE ( http://www.cadsoftusa.com/index.htm.en ) to build up complex electric circits, with the data and geometry of commercial parts. It is possible to export this data to simulation software like SPICE ( http://en.wikipedia.org/wiki/SPICE ). But this simulation softwares are pure electronic simulators. With MapleSim it would be possible to combine the electronics with multiphysics simulation.