Widget Class: _errorOn

Widget Class: _errorOn

Turns on a widget's error state

Syntax
Details

Syntax

objectName._errorOn( );

The Field function, ErrorOn function, or ErrorOn statement can also turn on the error attribute. However, only the _errorOn method may be executed from another Frame, SCL, or Program entry. For example, if you override the _validate method for a subclass of the TextEntry class, the _validate method can turn on the error attribute without knowing the field name.
For extended table widgets, you can enable the error flag for a particular row of the extended table and for any widget in the extended table. For more information, refer to _errorOn in the ExtendedTable class.
If any widget has its error attribute set when an END command is issued, you must issue the CANCEL command to execute any widget _preterm methods or the TERM label. The END command does not end the Frame entry.
If any widget has its error attribute set, the MAIN section will not execute unless CONTROL ERROR is in effect.

Example

_errorOn turns the error attribute on if the widget's value is greater than 100:

MYVALID:
  method;
    if (_value_>100) then
    _self_._errorOn();
  endmethod;