DEVICES: Difference between revisions

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{{DISPLAYTITLE:_DEVICES}}
{{DISPLAYTITLE:_DEVICES}}
The [[_DEVICES]] function returns the number of INPUT devices on your computer including keyboard, mouse and game devices.
The '''_DEVICES''' function returns the number of input devices on your computer including keyboard, mouse and game devices.




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




{{PageExamples}}
{{PageExamples}}
''Example:'' Checking for the system's input devices.
: Checking for the system's input devices.
{{CodeStart}}
{{CodeStart}}
devices = {{Cl|_DEVICES}} 'MUST be read in order for other 2 device functions to work!
devices% = {{Cl|_DEVICES}} {{Text|<nowiki>'MUST be read in order for other 2 device functions to work!</nowiki>|#919191}}
PRINT "Number of input devices found ="; devices
{{Cl|PRINT}} {{Text|<nowiki>"Number of input devices found ="</nowiki>|#FFB100}}; devices%
FOR i = 1 TO devices
{{Cl|FOR}} i% = {{Text|1|#F580B1}} {{Cl|TO}} devices%
  PRINT {{Cl|_DEVICE$}}(i)
    {{Cl|PRINT}} {{Cl|_DEVICE$}}(i%)
  PRINT "Buttons:"; {{Cl|_LASTBUTTON}}(i)
    {{Cl|PRINT}} {{Text|<nowiki>"Buttons:"</nowiki>|#FFB100}}; {{Cl|_LASTBUTTON}}(i%)
NEXT  
{{Cl|NEXT}} i%
{{Cl|END}}
{{CodeEnd}}
{{CodeEnd}}
{{OutputStart}}Number of input devices found = 2
{{OutputStart}}Number of input devices found = 2
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Buttons: 3
Buttons: 3
{{OutputEnd}}
{{OutputEnd}}
:Note: The [[STRIG]]/[[STICK]] commands won't read from the keyboard or mouse device the above example lists.
; Note: The [[STRIG]] and [[STICK]] commands won't read from the keyboard or mouse device the above example lists.




Latest revision as of 19:49, 11 May 2023

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 any of the _LASTxxx control functions.


Examples

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 i%
END

Number of input devices found = 2
[KEYBOARD][BUTTON]
Buttons: 512
[MOUSE][BUTTON][AXIS][WHEEL]
Buttons: 3
Note
The STRIG and STICK commands won't read from the keyboard or mouse device the above example lists.


See also


Navigation:
Main Page with Articles and Tutorials
Keyword Reference - Alphabetical
Keyword Reference - By usage
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