Handling events of SOLIDWORKS property manager page

PropertyManagerPageHandlerEx class is responsible for providing the events raised by property manager page to the client

Instance of the handler will be created by the framework and can be accessed via PropertyManagerPageEx::Handler property

...
m_Page = new PropertyManagerPageEx<MyPMPageHandler, DataModel>(m_Data, m_App);
m_Page.Handler.Closed += r =>
{
    ...
};
...