Tutorial 9 Question, I dont understand how the gui is made

[MasterM]

Hey,
I was reading the Meshtutorial/Tutorial 9 and i notice that the menu is builded like this

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// create menu
        gui::IGUIContextMenu* menu = env->addMenu();
        menu->addItem(L"File", -1, true, true);
        menu->addItem(L"View", -1, true, true);
        menu->addItem(L"Camera", -1, true, true);
        menu->addItem(L"Help", -1, true, true);

        gui::IGUIContextMenu* submenu;
        submenu = menu->getSubMenu(0);
        submenu->addItem(L"Open Model File & Texture...", 100);
        submenu->addItem(L"Set Model Archive...", 101);
        submenu->addItem(L"Load as Octree", 102);
        submenu->addSeparator();
        submenu->addItem(L"Quit", 200);

        submenu = menu->getSubMenu(1);
        submenu->addItem(L"sky box visible", 300, true, false, true);
        submenu->addItem(L"toggle model debug information", 400, true, true);
        submenu->addItem(L"model material", -1, true, true );

        submenu = submenu->getSubMenu(1);
        submenu->addItem(L"Off", 401);
        submenu->addItem(L"Bounding Box", 410);
        submenu->addItem(L"Normals", 420);
        submenu->addItem(L"Skeleton", 430);
        submenu->addItem(L"Wire overlay", 440);
        submenu->addItem(L"Half-Transparent", 450);
        submenu->addItem(L"Buffers bounding boxes", 460);
        submenu->addItem(L"All", 499);

        submenu = menu->getSubMenu(1)->getSubMenu(2);
        submenu->addItem(L"Solid", 610);
        submenu->addItem(L"Transparent", 620);
        submenu->addItem(L"Reflection", 630);

        submenu = menu->getSubMenu(2);
        submenu->addItem(L"Maya Style", 1000);
        submenu->addItem(L"First Person", 1100);

        submenu = menu->getSubMenu(3);
        submenu->addItem(L"About", 500);

What i don't understand is that it gets the submenu and then it gives it some items(well i understand that one)...and then i gets another submenu and gives that submenu its items(i also get that one,lol)...but its kinda confusing when i think about it cause wud'int it be better to do

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submenu1=menu->getSubMenu(1);
and submenu2=menu->getSubMenu(2);

Is there a reason why the Tutorial 9 creators did it the way they did it?
Thanks in advanced.

[sudi]

Is there a reason why the Tutorial 9 creators did it the way they did it?
Thanks in advanced.

Because they can...

[Halifax]

Why put 6 4-byte (or possibly 8-byte) pointers onto the stack when you can use 1? It's a simple as that. The way you specify is no optimization, in fact it is completely opposite, thus this is the reason they probably opted for that way.

[sudi]

to be honest i think they were just lazy^^

[BlindSide]

Tutorials DON'T follow recommended practices. They are made for ease of understanding, and should not be copied word for word in actual projects (Think NEHE, only for Irrlicht).

[MasterM]

Ok, that makes more sense
Thanks for answering everyone

[thespecial1]

C++ is not the Magdalena...it takes patience...shes like the well aged prostitute, it takes years to learn her tricks! she is cruel...laughs at you when you are naked...
Life of a programmer == Const abuse

understatement of the year, price of the power