RxUsbQueryNumberDevices
Description
Obtains the Total Number of currenly attached USB devices.
Syntax
rc = RxUsbQueryNumberDevices(Number)
Parameters
- Number
- receives the Total Number.
Return Code
Errors
Remarks
Example Code
/* add RxUsbQueryNumberDevices */
rc = RxFuncAdd('RxUsbQueryNumberDevices','usbcalls','RxUsbQueryNumberDevices')
say '+RxUsbQueryNumberDevices(),RC=0x'd2x(rc)
/* invoke RxUsbQueryNumberDevices */
drop Number /* receives number of devices */
rc = RxUsbQueryNumberDevices(Number)
say '*RxUsbQueryNumberDevices(),RC=0x'd2x(rc)
/* drop RxUsbQueryNumberDevices */
rc = RxFuncDrop('RxUsbQueryNumberDevices')
say '-RxUsbQueryNumberDevices(),RC=0x'd2x(rc)