How to Use coblist in MFC

In MFC, variables defined by the coblist type can be used to store class objects, but these variables must inherit the cobject class. Because coblist stores the pointer of the cobject class object.

Example: coblist list [num];

When retrieving the elements in the list, the pointer is taken. You need to convert the cobject type pointer to the following type:

Plan * OPLAN = (Plan *) List-> gethead (); // pointer type conversion

The following are incorrect practices:

Plan OPLAN = (Plan) * List-> gethead (); // type conversion

Or

Plan * OPLAN = List-> gethead (); // type conversion

A similar error occurs:

Error c2440: 'initializing': cannot convert from 'class cobject * 'to 'class plan *'