Mouse Commands

Logo offers commands to the check the position of the mouse and whether a mouse button has been pressed. You can also change the shape of the mouse.

BUTTON?

Also: BUTTONP

Reports the state of the left mouse button; no inputs.

Syntax

BUTTON?

Description

BUTTON? reports the state of the left mouse button. BUTTON? reports TRUE when the left button is depressed or FALSE when the button is not depressed.

See also MOUSE.

Examples

TO CHASE SETPOS MOUSE IF BUTTON? [STOP] CHASE END Result: CHASE defined CHASE

MOUSE

Reports the position of the mouse cursor; no inputs.

Syntax

MOUSE

Description

MOUSE reports the coordinates of the position of the mouse pointer as a list of two numbers representing the x coordinate and the y coordinate. The coordinates are relative to the center of the Graphics panel. See also BUTTON?, which reports whether the left mouse button is up or down.

Examples

TO CHASE SETPOS MOUSE IF BUTTON? [STOP] CHASE END Result: CHASE defined CHASE

MOUSESHAPE

Reports the shape of the mouse cursor; no inputs.

Syntax

MOUSESHAPE

Description

MOUSESHAPE reports the number of the current mouse pointer shape as defined with the SETMOUSESHAPE command. On startup, the mouse shape is 1.

Examples

MOUSESHAPE Result: 1

SETMOUSESHAPE

Sets the shape of the mouse cursor; expects between zero inputs and one input, but parentheses are needed if not called with one input.

Syntax

SETMOUSESHAPE number
(SETMOUSESHAPE)

Description

SETMOUSESHAPE changes the shape of the mouse cursor when it is within the Graphics panel. Its input is a number representing one of 17 available mouse shapes. When Logo starts, the mouse shape is 1. If SETMOUSESHAPE is enclosed in parentheses without inputs, shape 1 is used.

Note that the mouse shape only changes when the mouse hovers over the Graphics panel.

MOUSESHAPE reports the number of the current mouse shape.

Examples

SETMOUSESHAPE 2