1allegro_message(3) Allegro manual allegro_message(3)
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6 allegro_message - Used mainly to show error messages to users. Allegro
7 game programming library.
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10 #include <allegro.h>
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13 void allegro_message(const char *text_format, ...);
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16 Outputs a message, using a printf() format string. Usually you want to
17 use this to report messages to the user in an OS independent way when
18 some Allegro subsystem cannot be initialised. But you must not use this
19 function if you are in a graphic mode, only before calling
20 set_gfx_mode(), or after a set_gfx_mode(GFX_TEXT). Also, this function
21 depends on a system driver being installed, which means that it won't
22 display the message at all on some platforms if Allegro has not been
23 initialised correctly.
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25 On platforms featuring a windowing system, it will bring up a blocking
26 GUI message box. If there is no windowing system, it will try to print
27 the string to a text console, attempting to work around codepage dif‐
28 ferences by reducing any accented characters to 7-bit ASCII approxima‐
29 tions. Example:
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31 if (allegro_init() != 0)
32 exit(1);
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34 if (init_my_data() != 0) {
35 allegro_message("Sorry, missing game data!\n");
36 exit(2);
37 }
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41 allegro_init(3), install_allegro(3), set_uformat(3)
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45Allegro version 4.2.3 allegro_message(3)