1al_show_native_message_box(3)                    al_show_native_message_box(3)
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NAME

6       al_show_native_message_box - Allegro 5 API
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SYNOPSIS

9              #include <allegro5/allegro_native_dialog.h>
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11              int al_show_native_message_box(ALLEGRO_DISPLAY *display,
12                 char const *title, char const *heading, char const *text,
13                 char const *buttons, int flags)
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DESCRIPTION

16       Show a native GUI message box.  This can be used for example to display
17       an error message if creation of an initial display fails.  The  display
18       may  be  NULL,  otherwise the given display is treated as the parent if
19       possible.
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21       The message box will have a single “OK” button and use the style infor‐
22       mative  dialog boxes usually have on the native system.  If the buttons
23       parameter is not NULL, you can instead specify the  button  text  in  a
24       string, with buttons separated by a vertical bar (|).
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26              Note: buttons parameter is currently unimplemented on Windows.
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28       The flags available are:
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30       ALLEGRO_MESSAGEBOX_WARN
31              The  message  is a warning.  This may cause a different icon (or
32              other effects).
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34       ALLEGRO_MESSAGEBOX_ERROR
35              The message is an error.
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37       ALLEGRO_MESSAGEBOX_QUESTION
38              The message is a question.
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40       ALLEGRO_MESSAGEBOX_OK_CANCEL
41              Display a cancel button alongside the “OK” button.   Ignored  if
42              buttons is not NULL.
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44       ALLEGRO_MESSAGEBOX_YES_NO
45              Display  Yes/No  buttons instead of the “OK” button.  Ignored if
46              buttons is not NULL.
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48       al_show_native_message_box(3) may be called without Allegro  being  in‐
49       stalled.   This  is  useful to report an error during initialisation of
50       Allegro itself.
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52       Returns:
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54       • 0 if the dialog window was closed without activating a button.
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56       • 1 if the OK or Yes button was pressed.
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58       • 2 if the Cancel or No button was pressed.
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60       If buttons is not NULL, the number of the pressed button  is  returned,
61       starting with 1.
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63       All of the remaining parameters must not be NULL.
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65       If  a  message  box could not be created then this returns 0, as if the
66       window was dismissed without activating a button.
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68       Example:
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70              int button = al_show_native_message_box(
71                display,
72                "Warning",
73                "Are you sure?",
74                "If you click yes then you are confirming that \"Yes\" "
75                "is your response to the query which you have "
76                "generated by the action you took to open this "
77                "message box.",
78                NULL,
79                ALLEGRO_MESSAGEBOX_YES_NO
80              );
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84Allegro reference manual                         al_show_native_message_box(3)
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