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25 #ifndef QXTNULL_DEFINED
26 #define QXTNULL_DEFINED
27 #include <qxtglobal.h>
30 \class QxtNull QxtNull
35 \brief An object representing the "null" value for QxtNullable.
40 struct QXT_CORE_EXPORT QxtNull
42 /** integer cast operator
43 * In expressions, QxtNull behaves as an integer zero for compatibility with generic functions.
49 enum { isNull = true };
53 * A predefined null object that can be assigned to any QxtNullable object.
55 extern QxtNull qxtNull;
59 * A convenience alias for qxtNull.