'function' : cannot convert 'this' pointer from 'type1' to 'type2'
The compiler could not convert the this pointer from type1 to type2.
This error may be caused by invoking a non-const member function on a const object. To correct the problem, remove the const from the object declaration or add const to the member function.
The following is an example of this error:
class C
{
public:
void func1();
void func2() const;
} const c;
void main()
{
c.func1(); // error
c.func2(); // no error
}