Problems with ALLEGRO

Problems with ALLEGRO_FONT

Aleksa

Member #14,874

January 2013

I get two compile errors for ALLEGRO_FONT *fonts[FONT_MAX]; in graphics.h :
- syntax error: missing '{' before '*'
- identifier "ALLEGRO_FONT" is undefined

Strange thing is that ALLEGRO_BITMAP and ALLEGRO_DISPLAY work ok. If I include allegro_fonts in main or that exact .h file it works but that's not what i should do?
Any help?

graphics.h

#SelectExpand
  1#pragma once
  2
  3enum {
  4  IMAGE_BACKGROUND,
  5  IMAGE_MAX
  6};
  7
  8enum {
  9  FONT_PROGGYCLEANSZ_23,
 10  FONT_MAX
 11};
 12
 13ALLEGRO_BITMAP *images[IMAGE_MAX];
 14ALLEGRO_FONT *fonts[FONT_MAX];
 15ALLEGRO_DISPLAY *display;

graphics.c

#SelectExpand
  2#include <allegro5\allegro.h>
  3#include <allegro5\allegro_native_dialog.h>
  4#include <allegro5\allegro_image.h>
  5#include <allegro5\allegro_font.h>
  6#include <allegro5\allegro_ttf.h>
  7#include <allegro5\allegro_primitives.h>
  8
  9#include "graphics.h"
 10
 11
 12//LOADING STUFF

Edgar Reynaldo

Major Reynaldo

May 2007

You have to either include the allegro headers in your header file, or predeclare the types that you are using :

#include "allegro_font.h"

ALLEGRO_FONT* font;

struct ALLEGRO_FONT;

ALLEGRO_FONT* font;

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Aleksa

Member #14,874

January 2013

Including header file works, predeclare does not.
Any idea why other types as ALLEGRO_BITMAP and ALLEGRO_DISPLAY work?

Edgar Reynaldo

Major Reynaldo

May 2007

Try typedef struct ALLEGRO_FONT instead.

The other types probably work because you've included other headers before including your graphics.h header.

You have to include the headers at some point.

Aleksa

Member #14,874

January 2013

With typedef i get: 'typedef ': ignored on left of 'ALLEGRO_FONT' when no variable is declared

These are only headers i include in main.c
Are ALLEGRO_BITMAP and ALLEGRO_DISPLAY defined in allegro.h?

main.c headers

#SelectExpand
  1#include <stdbool.h>
  2#include <stdio.h>
  3
  4#include <allegro5\allegro.h>
  5#include <allegro5\allegro_native_dialog.h>
  6
  7#include "keyboard.h"
  8#include "graphics.h"

edit: I just peeked at allegro.h and it includes bitmap.h that defines ALLEGRO_BITMAP. This solves my confusion
Thanks

Edgar Reynaldo

Major Reynaldo

May 2007

Since you're using C I think you need to include 'struct' anytime you declare a variable of that type, unless it is after it has been typedef'ed.

struct ALLEGRO_FONT* font[3];

#include "allegro5/allegro_font.h"
/** in allegro_font.h
typedef struct ALLEGRO_FONT {...};
*/


ALLEGRO_FONT* font;

Aleksa

Member #14,874

January 2013

That works!

#SelectExpand
 1struct ALLEGRO_FONT *font[FONT_MAX];