NAME

       al_set_new_display_flags - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro.h>

              void al_set_new_display_flags(int flags)

DESCRIPTION

       Sets  various flags to be used when creating new displays on the calling thread.  flags is
       a bitfield containing any reasonable combination of the following:

       ALLEGRO_WINDOWED
              Prefer a windowed mode.

              Under multi-head X (not XRandR/TwinView), the use  of  more  than  one  adapter  is
              impossible  due to bugs in X and GLX.  al_create_display(3alleg5) will fail if more
              than one adapter is attempted to be used.

       ALLEGRO_FULLSCREEN
              Prefer a fullscreen mode.

              Under X the use of more than one FULLSCREEN display when  using  multi-head  X,  or
              true  Xinerama is not possible due to bugs in X and GLX, display creation will fail
              if more than one adapter is attempted to be used.

       ALLEGRO_FULLSCREEN_WINDOW
              Make the window span the entire screen.  Unlike ALLEGRO_FULLSCREEN this will  never
              attempt  to  modify  the  screen  resolution.   Instead the pixel dimensions of the
              created display will be the same as the desktop.

              The passed width and height are  only  used  if  the  window  is  switched  out  of
              fullscreen mode later but will be ignored initially.

              Under  Windows  and  X11  a  fullscreen  display created with this flag will behave
              differently from one created  with  the  ALLEGRO_FULLSCREEN  flag  -  even  if  the
              ALLEGRO_FULLSCREEN  display is passed the desktop dimensions.  The exact difference
              is platform dependent, but some things which may be different is how alt-tab works,
              how fast you can toggle between fullscreen/windowed mode or how additional monitors
              behave while your display is in fullscreen mode.

              Additionally under X, the use of more than one adapter in multi-head mode  or  with
              true  Xinerama  enabled  is  impossible due to bugs in X/GLX, creation will fail if
              more than one adapter is attempted to be used.

       ALLEGRO_RESIZABLE
              The display is resizable (only applicable if combined with ALLEGRO_WINDOWED).

       ALLEGRO_OPENGL
              Require the driver  to  provide  an  initialized  OpenGL  context  after  returning
              successfully.

       ALLEGRO_OPENGL_3_0
              Require  the driver to provide an initialized OpenGL context compatible with OpenGL
              version 3.0.

       ALLEGRO_OPENGL_FORWARD_COMPATIBLE
              If this flag is set, the OpenGL context created  with  ALLEGRO_OPENGL_3_0  will  be
              forward  compatible only, meaning that all of the OpenGL API declared deprecated in
              OpenGL 3.0 will not be supported.  Currently, a display created with this flag will
              not   be   compatible   with   Allegro   drawing   routines;   the  display  option
              ALLEGRO_COMPATIBLE_DISPLAY will be set to false.

       ALLEGRO_DIRECT3D
              Require the driver to do rendering with Direct3D and provide a Direct3D device.

       ALLEGRO_FRAMELESS
              Try to create a window without a frame (i.e.  no border or titlebar).  This usually
              does  nothing  for  fullscreen  modes, and even in windowed modes it depends on the
              underlying platform whether it is supported or not.  Since: 5.0.7, 5.1.2

       ALLEGRO_NOFRAME
              Original name for ALLEGRO_FRAMELESS.  This works with older versions of Allegro.

       ALLEGRO_GENERATE_EXPOSE_EVENTS
              Let the display generate expose events.

       0 can be used for default values.

SEE ALSO

       al_set_new_display_option(3alleg5),                        al_get_display_option(3alleg5),
       al_change_display_option(3alleg5)