allegro

This is a discussion on allegro within the Game Programming forums, part of the General Programming Boards category; I finally got allegro installed in my computer. I tried it for MSVC++ and Borland 5.0 but there were always ...

  1. #1
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    allegro

    I finally got allegro installed in my computer. I tried it for MSVC++ and Borland 5.0 but there were always errors like unresolved external, missing '}' in allegro.h (??) etc. I got it now working for Dev C++ 4, but I can not execute some code now(It compiles correctly, but it crashes during execution)
    The code is
    Code:
    #include <allegro.h>
    
    int main() 
    { 
     // Initialize Allegro.        
     allegro_init();      
    
     // Set the resolution to 640 by 480 with SAFE autodetection.
     set_gfx_mode(GFX_SAFE, 640, 480, 0, 0);
    
     // Installing the keyboard handler.
     install_keyboard();
    
     // Printing text to the screen.
     textout(screen, font, "Hello World!", 1, 1, 10);
     textout(screen, font, "Press ESCape to quit.", 1, 12, 11);
    
     // Looping until the ESCape key is pressed.
     while(! key[KEY_ESC])
       poll_keyboard(); // This shouldn't be necessary in Windows. 
    
     // Exit program.
     allegro_exit();
     return 0;     
    }     
    
    // Some Allegro magic to deal with WinMain().
    END_OF_MAIN();
    At first execution it worked, but now windows gives error
    Any help appreciated.(By the way, i'm using XP)

  2. #2
    I am the worst best coder Quantrizi's Avatar
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    Re: allegro

    Code:
    #include <allegro.h>
    
    int main() 
    { 
     // Set the resolution to 640 by 480 with SAFE autodetection.
     set_gfx_mode(GFX_SAFE, 640, 480, 0, 0);
    Use int main(int argc, char *argv[]) if you are using dev-c++. Also, use this for gfx_mode:
    Code:
    set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0);
    Code:
     allegro_exit();
     return 0;     
    }     
    // Some Allegro magic to deal with WinMain().
    END_OF_MAIN();
    Use readkey(); instead of allegro_exit();

  3. #3
    Registered User JoshG's Avatar
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    Why do you always say to use readkey() instead of allegro_exit()? They are two diferent things. He used allegro_init(), so he does not need allegro_exit(). Why would he need a readkey though?

    Look at this part:
    Code:
     // Looping until the ESCape key is pressed.
     while(! key[KEY_ESC])
       poll_keyboard(); // This shouldn't be necessary in Windows.
    That wait till you hit the escape key, so you don't need readkey()...

  4. #4
    i dont know Vicious's Avatar
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    >> He used allegro_init(), so he does not need allegro_exit().

    is that really true?
    What is C++?

  5. #5
    I am the worst best coder Quantrizi's Avatar
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    It is true, that is what I was trying to say before

  6. #6
    Rambling Man
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    So when do you use allegro_exit() then?

  7. #7
    Registered User JoshG's Avatar
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    Read the docs under Using Allegro, it is all there.

  8. #8
    I am the worst best coder Quantrizi's Avatar
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    That was used for earlier versions and only there incase you don't want to use the method I've said

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