Felisp
84436a5ae0
http://my.svgalib.org/svgalib/svgalib-1.9.25.tar.gz http://my.svgalib.org/svgalib/
97 lines
2.3 KiB
Groff
97 lines
2.3 KiB
Groff
.TH joystick_sethandler 3 "14 April 1998" "Svgalib 1.3.0" "Svgalib User Manual"
|
|
.SH NAME
|
|
joystick_sethandler, joystick_setdefaulthandler \- set the joystick event handler.
|
|
.SH SYNOPSIS
|
|
|
|
.B "#include <vgajoystick.h>"
|
|
.br
|
|
.BI "typedef void (*" __joystick_handler ") (int " event ", int " number ", char"
|
|
.IB value ", int " joydev );
|
|
|
|
.BI "void joystick_sethandler(int " joydev ", __joystick_handler " jh );
|
|
.br
|
|
.BI "void joystick_setdefaulthandler(int " joydev );
|
|
|
|
.SH DESCRIPTION
|
|
By default, each call to
|
|
.BR joystick_init (3)
|
|
enables the default handler for the opened joystick. This handler maintains a state table
|
|
which can be read by the
|
|
.BR joystick_getaxis (3),
|
|
.BR joystick_getbutton (3),
|
|
.BR joystick_button1|2|3|4 (3),
|
|
.BR joystick_getb1|2|3|4 (3),
|
|
.BR joystick_x|y|z "(3) and "
|
|
.BR joystick_getx|y|z (3)
|
|
functions.
|
|
|
|
If you define an own handler, the following parameters are passed:
|
|
|
|
.RS
|
|
.HP
|
|
.I event
|
|
one of the following values:
|
|
.RS
|
|
.HP
|
|
.B JOY_EVENTBUTTONDOWN
|
|
a button was pressed.
|
|
.HP
|
|
.B JOY_EVENTBUTTONUP
|
|
a button was released.
|
|
.HP
|
|
.B JOY_EVENTAXIS
|
|
the joystick position was changed.
|
|
.RE
|
|
|
|
.IP
|
|
All other values are reserved for future use.
|
|
|
|
.HP
|
|
.I number
|
|
identifies the button or axis to which this event belongs.
|
|
|
|
.HP
|
|
.I value
|
|
for axis events the new position in range
|
|
.BR "-128 .. 127" . See
|
|
.BR joystick_getaxis (3)
|
|
for further comments on the range.
|
|
|
|
.HP
|
|
.I joydev
|
|
identifies the joystick affected (this allows to use one handler for many joysticks).
|
|
.RE
|
|
|
|
.IB joydev " = -1"
|
|
modifies the event handler of
|
|
all currently open joystick devices.
|
|
|
|
.SH 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.
|
|
|
|
.SH SEE ALSO
|
|
|
|
.BR svgalib (7),
|
|
.BR vgagl (7),
|
|
.BR libvga.config (5),
|
|
.BR joytest (6),
|
|
.BR mjoytest (6),
|
|
.BR joystick_init (3),
|
|
.BR joystick_close (3),
|
|
.BR joystick_update (3),
|
|
.BR joystick_getnumaxes (3),
|
|
.BR joystick_getnumbuttons (3),
|
|
.BR joystick_getaxis (3),
|
|
.BR joystick_getbutton (3),
|
|
.BR joystick_button1 (3),
|
|
.BR joystick_getb1 (3),
|
|
.BR joystick_x (3),
|
|
.BR joystick_getx (3).
|
|
|
|
.SH 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.
|