STRUCTS

cmontiel · 05-12-2012 11:04 PM

Let's say we have 2 STRUCTS, each one referencing the other. VS displays error C2065.

Code:

STRUCT (ExClass1, GuiObjs)

       static void someFunction()

       {

               ExWindow2.show(); <<<<<<<< error C2065: 'ExWindow2' : undeclared identifier

       }

}ExWindow1;

STRUCT (ExClass2, GuiObjs)

       static void foo()

       {

               ExWindow1.show();

       }

}ExWindow2;

How can I solve it?

fatcoder · 05-12-2012 11:47 PM

Code:

struct ExClass2;

STRUCT (ExClass1, GuiObjs)

       static void someFunction()

       {

               ExWindow2.show(); <<<<<<<< error C2065: 'ExWindow2' : undeclared identifier

       }

}ExWindow1;

STRUCT (ExClass2, GuiObjs)

       static void foo()

       {

               ExWindow1.show();

       }

}ExWindow2;

Rubeus · 05-13-2012 12:01 AM

This is basic C++. You are trying to reference it before it's declared. Declare your structs before you try to call them. Try using a header.

cmontiel · 05-13-2012 12:29 AM

@fatcoder

That doesn't help. Same error.

@Rubeus

Please avoid things like "This is a basic C++" bla bla bla. I tried using a header before posting.

PsychoBoy · 05-13-2012 02:44 PM

It depends on what you need, there are more than one way, if it's static method you don't need object:

Code:

static void someFunction()

       {

               ExClass2::foo();

       }

If it's not static method:

Code:

struct ExClass1 ExWindow1;

struct ExClass2 ExWindow2;

STRUCT (ExClass1, GuiObjs)

       static void someFunction()

       {

               ExWindow2.show();

       }

};

STRUCT (ExClass2, GuiObjs)

       static void foo()

       {

               ExWindow1.show();

       }

};

Dynad · 05-13-2012 02:45 PM

Well you need to split the struct into header and cpp file.

header:

PHP Code:

STRUCT (ExClass1, GuiObjs)

    static void someFunction();
}ExWindow1;

STRUCT (ExClass2, GuiObjs)

    static void foo();
}ExWindow2; 

cpp:

PHP Code:

void ExClass1::someFunction()
{
    ExWindow2.show();
}

void ExClass2::foo()
{
    ExWindow1.show();
} 

cmontiel · 05-13-2012 03:39 PM

None of these solutions works for me, you guys really tested them?
Thank you all anyway.

Here is the code, if someone is interested.

header

Code:

STRUCT (ExClass1, GuiObjs)

    static void someFunction();

};

STRUCT (ExClass2, GuiObjs)

    static void foo();

};

cpp

Code:

// Variable names must be defined here NOT in header or errors will appear.

ExClass1 ExWindow1;

ExClass2 ExWindow2;

void ExClass1::someFunction()

{

    ExWindow2.show();

}

void ExClass2::foo()

{

    ExWindow1.show();

}

Dynad · 05-13-2012 03:49 PM

Ain't that the same thing i did? ...lol, ah well im glad u have it working now.

ps: i knew my code was working properly before even testing it and yes to be sure i tested it wink

cmontiel · 05-13-2012 03:55 PM

No, not the same. You defined the variable names in the header. That's causing linker errors. Even if the header has #ifndef #define [] #endif.

Dynad · 05-13-2012 04:08 PM

No it wont cause any linking errors, you just have to include it after the Esenthel header... and if you use precompiled headers... you need to include the header after...

So yes it will work.....

cmontiel · 05-13-2012 04:19 PM

I include it after the Esenthel header. And no, it doesn't work your solution, at least for me (VS and Xcode).

Dynad · 05-13-2012 04:25 PM

Dunno what you have done in your project but i used the standard EE tutorial project and added a .h file to it... included it after the stdafx.h. I didn't use any ifndef cause you don't really need them if your project has a good structure.

I'm 100% sure that my code compiles and runs but it doesn't matter now.

cmontiel · 05-13-2012 04:47 PM

I am using the MMO example as base project. Maybe there is some issue related to headers.

Anyway, declaring structs names inside the .cpp it works.

**Esenthel** · 05-16-2012 11:39 AM

in headers you muse use the "extern" keyword before declaring variables.

Code:

STRUCT (ExClass1, GuiObjs)

    static void someFunction();

}extern Var1;

STRUCTS
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