# QNX specifics

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- DIGI_*/QNX
- GFX_*/QNX
- MIDI_*/QNX
- qnx_get_window

Drivers GFX_*/QNX
QNX Allegro supports the following card parameters for the set_gfx_mode() function:

- GFX_TEXT
  This closes any graphic mode previously opened with set_gfx_mode.

- GFX_AUTODETECT
  Let Allegro pick an appropriate graphics driver.

- GFX_AUTODETECT_FULLSCREEN
  Autodetects a graphics driver, but will only use fullscreen drivers, failing if these are not available on current platform.

- GFX_AUTODETECT_WINDOWED
  Same as above, but uses only windowed drivers.

- GFX_SAFE
  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.

- GFX_PHOTON_DIRECT
  Fullscreen exclusive mode through Photon.

- GFX_PHOTON
  Windowed mode in a Photon window. Note that, mainly for performance reasons, this driver requires the width of the screen to be a multiple of 4.

Drivers DIGI_*/QNX
The QNX sound functions support the following digital soundcards:

          DIGI_AUTODETECT      - let Allegro pick a digital sound driver
          DIGI_NONE            - no digital sound
          DIGI_ALSA            - ALSA sound driver

Drivers MIDI_*/QNX
The QNX sound functions support the following MIDI soundcards:

          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.

PtWidget_t qnx_get_window(void);
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).

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