The _LASTBUTTON function returns the number of buttons a specified INPUT device on your computer has.
Syntax
buttonCount% = __LASTBUTTON(deviceNumber)
- Returns the number of buttons that can be read on a specified device number within the number of _DEVICES found.
- A valid number can be sent to the _BUTTON or _BUTTONCHANGE function to find any button events.
- The specific device name and functions can be found by the _DEVICE$ function STRING.
- 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 _LASTBUTTON or an ERROR Codes will occur.
- Devices include keyboard (reported as 1), mouse (reported as 2), joysticks, game pads and multiple stick game controllers.
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.