Inaccessible method

[MarkoKlacar]

Hi AlI,

I have a class called Rectangle that contains a public method:

bool contains(int x, int y);

I have a nother class called Components that is a subclass of Rectangle.

From a totally different class, Compund, I now want to loop through a vector<Component*> and call the method contains with the appropriate arguments.

I get an error telling me:

../Rectangle.h:11: `bool Rectangle::contains(int, int)' is inaccessible
../Compound.cpp:43: within this context
 

It's probably real obvious, I'm not that good with c++.

Any ideas?

Cheers

[Airslash]

Hi AlI,

I have a class called Rectangle that contains a public method:

bool contains(int x, int y);

I have a nother class called Components that is a subclass of Rectangle.

From a totally different class, Compund, I now want to loop through a vector<Component*> and call the method contains with the appropriate arguments.

I get an error telling me:

../Rectangle.h:11: `bool Rectangle::contains(int, int)' is inaccessible
../Compound.cpp:43: within this context
 

It's probably real obvious, I'm not that good with c++.

Any ideas?

Cheers

Ok, from my head and on the fly:

class Rectangle {
public:
virtual bool contains(int, int);
}
 

class Component : public Rectangle {
public:
bool contains(int, int);
 

With this your component inherits from rectangle, and overwrites the function.

An another approach is to insert the rectangle class as a datamember in your Component class, and give your Component class a method contains(int, int) that calls the contains method of your datamember

[MarkoKlacar]

Hi,

Thanks for the reply. I created a method inside Component that calls the Rectangle::contains(int,int)...

Thanks!

[Banfa]

Thanks for the reply. I created a method inside Component that calls the Rectangle::contains(int,int)...

That shouldn't be required unless Component::contains actually has different functionality to Rectangle::contains you should be able to declare it as

class Rectangle 
{
public:
    virtual bool contains(int, int);
}
 
class Component : public Rectangle 
{
}
 

and be able to call contains from a object of type Component. I suspect in your first implementation that you left out the public keyword when declaring Component as a subclass of Rectangle.