LASTWHEEL: Difference between revisions
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* Returns the number of wheels that can be used on a specified device number within the number of [[_DEVICES]] found. | * Returns the number of wheels that can be used on a specified device number within the number of [[_DEVICES]] found. | ||
* A valid number can be sent to the [[_WHEEL]] function to find any relative positive or negative wheel movements. | * A valid number can be sent to the [[_WHEEL]] function to find any relative positive or negative wheel movements. | ||
* The devices are listed in a numerical order determined by the OS and can be read by the [[_DEVICE$]] function. | * The devices are listed in a numerical order determined by the OS and can be read by the [[_DEVICE$]] function. | ||
* '''The [[_DEVICES]] function must be read before using _LASTWHEEL or an [[ERROR Codes|"Illegal Function Call" error]] may occur.''' | * '''The [[_DEVICES]] function must be read before using _LASTWHEEL or an [[ERROR Codes|"Illegal Function Call" error]] may occur.''' | ||
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PRINT {{Cl|_DEVICE$}}(i) | PRINT {{Cl|_DEVICE$}}(i) | ||
IF {{Cl|INSTR}}({{Cl|_DEVICE$}}(i), "[WHEEL]") THEN PRINT "Wheels:"; {{Cl|_LASTWHEEL}}(i) | IF {{Cl|INSTR}}({{Cl|_DEVICE$}}(i), "[WHEEL]") THEN PRINT "Wheels:"; {{Cl|_LASTWHEEL}}(i) | ||
NEXT | NEXT | ||
{{CodeEnd}} | {{CodeEnd}} | ||
{{OutputStart}}Number of input devices found = 2 | {{OutputStart}}Number of input devices found = 2 | ||
| Line 42: | Line 42: | ||
{{PageNavigation}} | {{PageNavigation}} | ||
Latest revision as of 01:55, 23 January 2023
The _LASTWHEEL function returns the number of wheels a specified number INPUT device on your computer has.
Syntax
- wheelCount% = _LASTWHEEL(deviceNumber)
- Returns the number of wheels that can be used on a specified device number within the number of _DEVICES found.
- A valid number can be sent to the _WHEEL function to find any relative positive or negative wheel movements.
- The devices are listed in a numerical order determined by the OS and can be read by the _DEVICE$ function.
- The _DEVICES function must be read before using _LASTWHEEL or an "Illegal Function Call" error may occur.
- Devices include keyboard (reported as 1), mouse (reported as 2), joysticks, game pads and multiple stick game controllers.
Examples
Example: Checking for the system's input devices and number of wheels available.
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$(i) IF INSTR(_DEVICE$(i), "[WHEEL]") THEN PRINT "Wheels:"; _LASTWHEEL(i) NEXT |
Number of input devices found = 2 [KEYBOARD][BUTTON] [MOUSE][BUTTON][AXIS][WHEEL] Wheels: 3 |
- Note: A mouse may have 3 wheels listed when there is only one scroll wheel.
See also
- _LASTBUTTON, _LASTAXIS
- _AXIS, _BUTTON, _WHEEL
- _DEVICE$, _DEVICES
- _MOUSEBUTTON
- STRIG, STICK
- ON STRIG(n), STRIG(n)