Add CONSTANT attribute to Q_PROPERTY()

This will be used by the declarative module to determine if a property lacking a NOTIFY signal is truly constant, or just missing a NOTIFY signal.

Reviewed-by: Roberto Raggi

2 files changed, 8 insertions, 1 deletions

diff --git a/doc/src/properties.qdoc b/doc/src/properties.qdoc
index 5490dd0..cac5016 100644
--- a/doc/src/properties.qdoc
+++ b/doc/src/properties.qdoc
@@ -122,6 +122,12 @@
     editable property for (checkable) buttons. Note that QItemDelegate
     gets and sets a widget's \c USER property.
 
+    \o The presence of the \c CONSTANT attibute indicates that the property 
+    value is constant.  For a given object instance, the READ method of a 
+    constant property must return the same value every time it is called.  This
+    constant value may be different for different instances of the object.  A
+    constant property cannot have a WRTE method or a NOTIFY signal.
+
     \endlist
 
     The \c READ, \c WRITE, and \c RESET functions can be inherited.
diff --git a/doc/src/snippets/code/doc_src_properties.qdoc b/doc/src/snippets/code/doc_src_properties.qdoc
index 377cc9c..64e5377 100644
--- a/doc/src/snippets/code/doc_src_properties.qdoc
+++ b/doc/src/snippets/code/doc_src_properties.qdoc
@@ -7,7 +7,8 @@ Q_PROPERTY(type name
            [DESIGNABLE bool]
            [SCRIPTABLE bool]
            [STORED bool]
-	   [USER bool])
+	   [USER bool]
+           [CONSTANT])
 //! [0]