Default constructor for an empty event indicator.
Watch input / Input is available (default: false)
Watch output / Output can be written (default: false)
Watch for errors / Errors occurred (default: false)
Combine two indicators with logical and.
Watch for errors / Errors occurred (default: false)
Watch input / Input is available (default: false)
Whether this indicator has no flags set.
Whether this indicator has at least one flag set.
Watch output / Output can be written (default: false)
Combine two indicators with logical or.
Poll event indicator.
Watch input / Input is available (default: false)
Watch output / Output can be written (default: false)
Watch for errors / Errors occurred (default: false)