1. converting MFC to Euphoria (W/O TYPOS THIS TIME)
>class camera
>{
>public:
> camera();
> virtual ~camera();
> int init(DWORD object_to_chase);
> void move(void);
> void zoom_out(void);
> void zoom_in(void);
> void set_chase_flexible_mode(void);
> void set_chase_location_mode(void);
> void stop_chasing(void);
> void update_chase_params(void);
> DWORD m_camera_handle;
>
>private:
> DWORD m_object_to_chase;
>
>};
>
>and lines like these in the main program....
>
>camera1->set_chase_flexible_mode();
>
>
>Is camera1 a pointer to an instance of a structure of type camera? (did
>that make any sense?)
Almost, it's a pointer to instance of the camera-class.
>Does "camera1->set_chase_flexible_mode();" call the function and then
>somehow fill in an
>element in the structure? But how if "set_chase_flexible_mode" is a "void"
>function??
It'll probably do something with m_object_to_chase.
>What are all those functions / procedures doing in there?
>
An object's functions (also known as methods) are there to do operations on
that same object's data.
Stupid example:
class person
{
public:
person(); //constructor (called when "new" is invoked)
virtual ~person; //destructor (called when "delete" is invoked)
void set_first(char *first);
int get_age();
private:
char first;
int age;
};
And of course you'd have to write the functions you declared, wich is done
inside of the class-definition (?).
Let P be an instance of person, then you could do something like this:
i = P.age; //ERROR! age is a private matter :)
i = P::get_age(); // ask politely..
P::set_first("Bubba");
etc.
I hope this was right. I've done some reading on OOP earlier on, though I've
never practiced it..
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