_DEVICES - QB64Official/qb64 GitHub Wiki

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

Syntax

device_count% = _DEVICES

Description

  • Returns the number of devices that can be listed separately with the _DEVICE$ function by the device number.
  • Devices include keyboard, mouse, joysticks, game pads and multiple stick game controllers.
  • Note: This function must be read before trying to use the _DEVICE$, _DEVICEINPUT or _LAST control functions.

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