kdmouse(7) —

NAME

kdmouse − built-in mouse device interface

DESCRIPTION

The kdmouse driver supports Micro Channel architecture mice and compatibles (such as the IBM PS/2 mouse) on machines with built-in mouse interfaces such as the COMPAQ 20e and the IBM PS/2 model 80. It allows applications to obtain information about the mouse’s movements and the status of its buttons.

Programs are able to read directly from the device. The data returned corresponds to the byte sequences as defined in the IBM PS/2 Technical Reference Manual. Programs are not able to write to the kdmouse device.

Ioctl Call

MOUSEIOCREAD
This call returns status information about the mouse buttons and the mouse’s relative movement since the previous MOUSEIOCREAD (or since mouse initialization, for the first MOUSEIOCREAD). The argument is the address of a mouseinfo structure; the following structure definition and #defines may be found in <sys/mouse.h>:

struct mouseinfo {
unsigned char status;/∗ see definitions below∗/
char xmotion, ymotion;/∗ between −128 and 127∗/
}
#define BUT3STAT1 /∗ button 3 status (1=down) ∗/
#define BUT2STAT2 /∗ button 2 status (1=down) ∗/
#define BUT1STAT4 /∗ button 1 status (1=down) ∗/
#define BUT3CHNG8 /∗ button 3 changed? (1=yes) ∗/
#define BUT2CHNG0x10 /∗ button 2 changed? (1=yes) ∗/
#define BUT1CHNG0x20 /∗ button 1 changed? (1=yes) ∗/
#define MOVEMENT0x40 /∗ mouse moved? (1=yes) ∗/

FILES

/dev/kdmouse

ADDED VALUE

This entry, supplied by INTERACTIVE Systems Corporation, is an extension of UNIX System V.