ui.Dialog.getCurrent
Returns the current dialog object.
Syntax
ui.Dialog.getCurrent()
  RETURNS ui.Dialog
Usage
To get the current active dialog object, use the
 ui.Dialog.getCurrent()  class method.
The method returns NULL if there is no current active dialog.
Example
FUNCTION field_disable(name)
  DEFINE name STRING
  DEFINE d ui.Dialog 
  LET d = ui.Dialog.getCurrent()
  IF d IS NOT NULL THEN
    CALL d.setFieldActive(name, FALSE)
  END IF
END FUNCTION