Result_Flag as L = ui_dlg_eval_valid(C dlg_title ,C expression )
.T. indicates that the variable exists. .F. indicates that the variable does not exist.
The title of a Xdialog.
An expression that can be interpreted as the name of a variable.
Tests is an expression is valid in the context of a modeless dialog box
The UI_DLG_EVAL_VALID() function tests for the existence of a variable defined inside another Xdialog.
Desktop applications only.