.invert Method

Function:	Inverts the state of the I/O line specified by the num argument.
Syntax:	io.invert(num as pl_io_num)
Returns:	---
See Also:	Line/Port Manipulation Without Preselection, io.lineget, io.lineset

Part	Description
num	See the list of pl_io_num constants in the platform specifications.

Details

No line preselection with the io.num property is required and the value of io.num will not be changed.

There are a few situations in which an exception may be thrown when invoking this method. For more information, see Handling Exceptions.

Exception	Root Cause(s)
std::invalid_argument	The selected I/O line number is invalid.
std::system_error	The state of this I/O line cannot be changed because it is currently in use.