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 _LASTBUTTON function returns the number of buttons a specified INPUT device on your computer has.


buttonCount% = __LASTBUTTON(deviceNumber)


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 "Buttons:"; _LASTBUTTON(i)

Number of input devices found = 2
Buttons: 512
Buttons: 3

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

See Also