In terms of file redistribution, the QNX platform behaves practically the
same as the DOS platform. Read section chapter "Dos specifics" in the manual
to learn more about this.
QNX Allegro supports the following card parameters for the
This closes any graphics mode previously opened with set_gfx_mode.
Let Allegro pick an appropriate graphics driver.
Autodetects a graphics driver, but will only use fullscreen drivers,
failing if these are not available on current platform.
Same as above, but uses only windowed drivers.
Special driver for when you want to reliably set a graphics mode and
don't really care what resolution. See the set_gfx_mode()
documentation for details.
Alias for GFX_PHOTON_ACCEL.
Fullscreen exclusive mode through Photon, running with hardware
Fullscreen exclusive mode that only uses software drawing, rather than
any hardware accelerated features.
Simplified fullscreen exclusive driver that doesn't support any
hardware acceleration, video or system bitmaps, etc.
The regular windowed Photon driver, running in color conversion mode
when the color depth doesn't match that of the Photon desktop. Color
conversion is much slower than direct drawing. Note that, mainly for
performance reasons, this driver requires the width of the screen to
be a multiple of 4.
The QNX sound functions support the following digital sound cards:
DIGI_AUTODETECT - let Allegro pick a digital sound driver
DIGI_NONE - no digital sound
DIGI_ALSA - ALSA sound driver
The QNX sound functions support the following MIDI sound cards:
MIDI_AUTODETECT - let Allegro pick a MIDI sound driver
MIDI_NONE - no MIDI sound
MIDI_ALSA - ALSA RawMIDI driver
MIDI_DIGMID - sample-based software wavetable player
The following functions provide a platform specific interface to seamlessly
integrate Allegro into general purpose QNX programs. To use these routines,
you must include qnxalleg.h after other Allegro headers.
Retrieves a handle to the window used by Allegro. Note that Allegro
uses an underlying window even though you don't set any graphics mode,
unless you have installed the neutral system driver (SYSTEM_NONE).