Provided by: allegro5-doc_5.2.6.0-1_all bug


       al_show_native_message_box - Allegro 5 API


              #include <allegro5/allegro_native_dialog.h>

              int al_show_native_message_box(ALLEGRO_DISPLAY *display,
                 char const *title, char const *heading, char const *text,
                 char const *buttons, int flags)


       Show  a  native GUI message box.  This can be used for example to display an error message
       if creation of an initial display fails.  The display may be  NULL,  otherwise  the  given
       display is treated as the parent if possible.

       The  message box will have a single “OK” button and use the style informative dialog boxes
       usually have on the native system.  If the buttons parameter is not NULL, you can  instead
       specify the button text in a string, with buttons separated by a vertical bar (|).

              Note: buttons parameter is currently unimplemented on Windows.

       The flags available are:

              The message is a warning.  This may cause a different icon (or other effects).

              The message is an error.

              The message is a question.

              Display a cancel button alongside the “OK” button.  Ignored if buttons is not NULL.

              Display Yes/No buttons instead of the “OK” button.  Ignored if buttons is not NULL.

       al_show_native_message_box(3alleg5)  may  be called without Allegro being installed.  This
       is useful to report an error during initialisation of Allegro itself.


       · 0 if the dialog window was closed without activating a button.

       · 1 if the OK or Yes button was pressed.

       · 2 if the Cancel or No button was pressed.

       If buttons is not NULL, the number of the pressed button is returned, starting with 1.

       All of the remaining parameters must not be NULL.

       If a message box could not be created then this returns 0, as if the window was  dismissed
       without activating a button.


              int button = al_show_native_message_box(
                "Are you sure?",
                "If you click yes then you are confirming that \"Yes\" "
                "is your response to the query which you have "
                "generated by the action you took to open this "
                "message box.",