Displaying fonts

Displaying fonts

gary_ramsgate

Member #8,619

May 2007

I'm having problems with displaying fonts in a program i'm writing.
When I try to compile the program DEVC++ throws up the following error message:
C:\Documents and Settings\GFSmith\Desktop\blank\blank.cpp cannot convert `DATAFILE' to `const FONT*' for argument `2' to `void textout_ex(BITMAP*, const FONT*, const char*, int, int, int, int)'

I've written programs in the past using RHIDE and allegro and haven't had any problems displaying my own fonts, so is there anything obvious i'm missing or is it something else.

1main.cpp
2#include <allegro.h>
3#include "FONTS.H"
4DATAFILE *data;
5 
6int main(void)
7{
8   /* you should always do this at the start of Allegro programs */
9   if (allegro_init() != 0)
10      return 1;
11 
12   /* set up the keyboard handler */
13   install_keyboard(); 
14   /* set colour depth to 16 bits */
15   set_color_depth(16);
16   /* set a graphics mode */
17   set_gfx_mode(GFX_AUTODETECT, 800, 600, 0, 0) != 0;
18   
19   data=load_datafile("FONTS.DAT");
20 
21   textout_ex(screen, font, "NORMAL FONT", 10, 10,makecol(255, 255, 255), -1);
22   textout_ex(screen, data[slip22], "NEW FONT", 10, 50,makecol(255, 255, 255), -1);
23 
24   /* wait for a keypress */
25   readkey();
26   return 0;
27}
28 
29END_OF_MAIN()

FONTS.DAT was created using grabber.
Many thanks.

Kris Asick

Member #1,424

July 2001

Try this:

textout_ex(screen, (FONT*)data[slip22].dat, "NEW FONT", 10, 50,makecol(255, 255, 255), -1);

When accessing datafile objects, you need to type cast and you also need to access the .dat member of the array.

--- Kris Asick (Gemini)
--- http://www.pixelships.com

gary_ramsgate

Member #8,619

May 2007

Thanks for your help Kris, it now works.