very newb question

[Kamazy]

OK, here waht i want to do.
i wana make driver,device.. and all those globals so i can use device-> in another file/function.
But i can't seem to understand how to "move" a variable from one file to the other or link 2 files variables.
i'm sure this is very newb question but noone of the tutorials cover that.

[forum request]
why not have a sticky "post minor questions here" thread so that newb questoins don't need a new thread everytime.

[Acki]

You can declare them as external, or simple pass the pointer to a function (maybe constructor)...

This is basic C/C++ knowledge, so I suggest you to learn the C/C++ basics !!!

[Kamazy]

would you mind gicing me an example of making device an external?
i tried a few times but couldn't get it to work. XD

[JP]

If another class needs a pointer to the device then just pass it to that class through the constructor

[Kamazy]

Could anyone point me to a code example of how to make external variables?
I'm very newb to this kind of variable passing.

[JP]

How about trying to google something like "c++ external variables"?

[Acki]

Well, this is basic knowledge, so you really shoul have a look for a C/C++ tutorial first...

anyways, here's a small example:

main.cpp

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#include <irrlicht.h>
using namespace irr;
using namespace core;
using namespace scene;
using namespace video;
using namespace io;
using namespace gui;

// this is the class you whant to use
#include "foo.h"
foo myClass;

IrrlichtDevice* device;
ISceneManager* smgr;

int main(){
  // here is the initialisation of the engine and main loop...
}

and this is the header file of the class:

foo.h

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#ifndef FOO_H_INCLUDED
#define FOO_H_INCLUDED

class foo{
  // here are the declarations of the class members located
};

extern IrrlichtDevice* device;
extern ISceneManager* smgr;

#endif // FOO_H_INCLUDED

Now you can use device and smgr as they where created inside the foo class...

[chaoslion]

yea or here:
put this in your global header file:

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extern irr::irrichtDevice *device;

and then in ONE .cpp file the declaration

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irr::irrichtDevice *device = NULL;