RxUsbQueryNumberDevices: Difference between revisions
Created page with "==Description== Obtains the Total Number of currenly attached USB devices. ==Syntax== <pre> rc = RxUsbQueryNumberDevices(Number) </pre> ==Parameters== ; Number : receives t..." |
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Revision as of 03:33, 11 January 2017
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)