Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
joystick_sethandler(3)	      Svgalib User Manual	joystick_sethandler(3)

NAME
       joystick_sethandler,  joystick_setdefaulthandler	 -  set	 the  joystick
       event handler.

SYNOPSIS
       #include	<vgajoystick.h>
       typedef void (*__joystick_handler) (int event, int number, char	value,
       int joydev);

       void joystick_sethandler(int joydev, __joystick_handler jh);
       void joystick_setdefaulthandler(int joydev);

DESCRIPTION
       By  default,  each call to joystick_init(3) enables the default handler
       for the opened joystick.	This handler maintains a state table which can
       be   read   by  the  joystick_getaxis(3),  joystick_getbutton(3),  joy-
       stick_button1|2|3|4(3), joystick_getb1|2|3|4(3),	joystick_x|y|z(3)  and
       joystick_getx|y|z(3) functions.

       If you define an	own handler, the following parameters are passed:

	      event one	of the following values:

		     JOY_EVENTBUTTONDOWN a button was pressed.

		     JOY_EVENTBUTTONUP a button	was released.

		     JOY_EVENTAXIS the joystick	position was changed.

		     All other values are reserved for future use.

	      number  identifies  the  button  or axis to which	this event be-
		     longs.

	      value for	axis events the	new position in	range -128 ..  127.See
		     joystick_getaxis(3) for further comments on the range.

	      joydev  identifies the joystick affected (this allows to use one
		     handler for many joysticks).

       joydev =	-1 modifies the	event handler of all currently	open  joystick
       devices.

CAVEATS
       This  function  is  only	 available  in ELF versions of svgalib.	Due to
       backwards compatibility issues it cannot	 be  used  with	 shared	 a.out
       libs.

SEE ALSO
       svgalib(7),  vgagl(7),  libvga.config(5), joytest(6), mjoytest(6), joy-
       stick_init(3), joystick_close(3),  joystick_update(3),  joystick_getnu-
       maxes(3), joystick_getnumbuttons(3), joystick_getaxis(3), joystick_get-
       button(3), joystick_button1(3), joystick_getb1(3), joystick_x(3),  joy-
       stick_getx(3).

AUTHOR
       The  svgalib  joystick  handler	was  mostly  done by Daniel Engstr\"om
       <daniel.engstrom@riksnett.no>.  Multiple	joystick, VC switching support
       and  code  to  glue  it	into  svgalib  by  Michael Weller <eowmob@exp-
       math.uni-essen.de>. Part	of the code is based on	code from C. Smith and
       Vojtech Pavlik.

Svgalib	1.3.0			 14 April 1998		joystick_sethandler(3)

NAME | SYNOPSIS | DESCRIPTION | CAVEATS | SEE ALSO | AUTHOR

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=joystick_sethandler&sektion=3&manpath=FreeBSD+12.1-RELEASE+and+Ports>

home | help