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Why struct instead of class? [message #21815]

Sat, 06 June 2009 06:47

jeremy_c
Messages: 175
Registered: August 2007
Location: Ohio, USA

Experienced Member

Why do the example use struct instead of class? i.e.

struct MyAppWindow : TopWindow {

    virtual void Paint(Draw& w) {

        w.DrawRect(GetSize(), SWhite);

        w.DrawText(20, 20, "Hello world!", Arial(30), Magenta);

    }

    

    MyAppWindow() {

        Title("My application").Zoomable().Sizeable();

    }

};

Jeremy

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Re: Why struct instead of class? [message #21817 is a reply to message #21815]

Sat, 06 June 2009 17:52

cbpporter
Messages: 1427
Registered: September 2007

Ultimate Contributor

Well in modern C++ the difference between struct and class is pretty much trivial and related to default access rights: members in structs are public by default and members in classes are private by default.

C++ has a lot of duplicate features, so I tend to allays use only class to avoid it. But it makes no difference, use the one you like better, just don't mix and match in inheritance trees Smile

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Re: Why struct instead of class? [message #21825 is a reply to message #21815]

Sun, 07 June 2009 21:46

mirek
Messages: 14255
Registered: November 2005

Ultimate Member

jeremy_c wrote on Sat, 06 June 2009 00:47

Why do the example use struct instead of class? i.e.

struct MyAppWindow : TopWindow {

    virtual void Paint(Draw& w) {

        w.DrawRect(GetSize(), SWhite);

        w.DrawText(20, 20, "Hello world!", Arial(30), Magenta);

    }

    

    MyAppWindow() {

        Title("My application").Zoomable().Sizeable();

    }

};

Jeremy

Because I am lazy to write "public" for "final use" classes:)

I mean, access control is important for reusable classes. But if I am writing concrete app, I usually do not bother using access control as chances that class is going to be reused by other code is nil.

Mirek

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