QB64.com

QB64 is a modern extended BASIC programming language that retains QBasic/QuickBASIC 4.5 compatibility and compiles native binaries for Windows, Linux, and macOS.

The _DEVICES function returns the number of INPUT devices on your computer including keyboard, mouse and game devices.

Syntax

device_count% = _DEVICES

Description

Example(s)

Checking for the system’s input devices.


devices = _DEVICES  'MUST be read in order for other 2 device functions to work!
PRINT "Number of input devices found ="; devices
FOR i = 1 TO devices
  PRINT _DEVICE$(i)
  PRINT "Buttons:"; _LASTBUTTON(i)
NEXT 


Number of input devices found = 2
[KEYBOARD][BUTTON]
Buttons: 512
[MOUSE][BUTTON][AXIS][WHEEL]
Buttons: 3

Note: The STRIG/STICK commands won’t read from the keyboard or mouse device the above example lists.

See Also