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47 lines
1.6 KiB
Markdown
47 lines
1.6 KiB
Markdown
The [_LASTWHEEL](_LASTWHEEL) function returns the number of wheels a specified number INPUT device on your computer has.
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## Syntax
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> wheelCount% = [_LASTWHEEL](_LASTWHEEL)(deviceNumber)
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* Returns the number of wheels that can be used on a specified device number within the number of [_DEVICES](_DEVICES) found.
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* A valid number can be sent to the [_WHEEL](_WHEEL) function to find any relative positive or negative wheel movements.
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* The devices are listed in a numerical order determined by the OS and can be read by the [_DEVICE$](_DEVICE$) function.
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* **The [_DEVICES](_DEVICES) function must be read before using _LASTWHEEL or an [ERROR Codes](ERROR-Codes) may occur.**
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* Devices include keyboard (reported as 1), mouse (reported as 2), joysticks, game pads and multiple stick game controllers.
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## Example(s)
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Checking for the system's input devices and number of wheels available.
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```vb
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devices = _DEVICES 'MUST be read in order for other 2 device functions to work!
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PRINT "Number of input devices found ="; devices
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FOR i = 1 TO devices
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PRINT _DEVICE$(i)
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IF INSTR(_DEVICE$(i), "[WHEEL]") THEN PRINT "Wheels:"; _LASTWHEEL(i)
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NEXT
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```
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```text
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Number of input devices found = 2
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[KEYBOARD][BUTTON]
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[MOUSE][BUTTON][AXIS][WHEEL]
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Wheels: 3
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```
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> *Note:* A mouse may have 3 wheels listed when there is only one scroll wheel.
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## See Also
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* [_LASTBUTTON](_LASTBUTTON), [_LASTAXIS](_LASTAXIS)
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* [_AXIS](_AXIS), [_BUTTON](_BUTTON), [_WHEEL](_WHEEL)
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* [_DEVICE$](_DEVICE$), [_DEVICES](_DEVICES)
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* [_MOUSEBUTTON](_MOUSEBUTTON)
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* [STRIG](STRIG), [STICK](STICK)
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* [ON STRIG(n)](ON-STRIG(n)), [STRIG(n)](STRIG(n))
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