Manual Page Result
0
Command: button | Section: 9 | Source: UNIX v10 | File: button.9
BUTTON(9.2) BUTTON(9.2)
NAME
button123, mouse, cursallow, cursinhibit, cursset, cursswitch, ge-
trect123 - mouse control
SYNOPSIS
#include <jerq.h>
extern struct Mouse {
Point xy;
short buttons;
} mouse;
int button(n) int n;
int button1(), button2(), button3();
int button12(), button23(), button123();
void cursinhibit();
void cursallow();
void cursset(p); Point p;
Texture *cursswitch(t); Texture *t;
Rectangle getrect(n) int n;
Rectangle getrect1(), getrect2(), getrect3();
Rectangle getrect12(), getrect23(), getrect123();
DESCRIPTION
When the mouse is requested (see request(9.2)), the mouse state is up-
dated asynchronously in the structure mouse. The coordinates of the
mouse are held in mouse.xy, and the state of the buttons in mouse.but-
tons. Each process's mouse structure is independent of the others, so
that (except for cursset) actions such as changing the tracking cursor
do not affect the mouse in other processes.
The macro button and its counterparts return the state of the associ-
ated mouse button: non-zero if the button is depressed, 0 otherwise.
The buttons are numbered 1 to 3 from left to right. Button12 and the
other multi-button functions return the OR of their states: true if ei-
ther button 1 or button 2 is depressed.
Cursinhibit turns off interrupt-time cursor tracking (the drawing of
the cursor on the screen), although the mouse coordinates are still
kept current and available. Cursallow enables interrupt-time cursor
tracking. Cursallow and cursinhibit stack: to enable cursor tracking
after two calls to cursinhibit, two calls to cursallow are required.
Cursset moves the mouse cursor to the Point p.
Cursswitch changes the mouse cursor (a 16x16 pixel image) to that spec-
ified by the Texture *t. If the argument is (Texture*)0, the cursor is
restored to the default arrow. Cursswitch returns the previous value
of the cursor: the argument of the previous call to cursswitch.
Getrect prompts the user with a box cursor and waits for a rectangle to
be swept out with the named button, identified as with the button prim-
itives. It returns the screen coordinates of the box swept. The box
may be partly or wholly outside the process's layer.
BUTTON(9.2)