make lambda compatible with qt 4.7

diff --git a/src/misc/vlambda.cpp b/src/misc/vlambda.cpp
index bbaead2..6a7cab3 100644 (file)
--- a/src/misc/vlambda.cpp
+++ b/src/misc/vlambda.cpp
@@ -16,6 +16,9 @@
 using namespace std;
 using namespace MVLambdaNS;
 
+
+//the static metacall was introduced in Qt 4.8
+#if QT_VERSION >= 0x040800
 //static
 void MVLambdaBase::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, void **_a)
 {
@@ -26,17 +29,21 @@ void MVLambdaBase::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id
     }
 }
 
-
 //static 
 const QMetaObjectExtraData MVLambdaBase::staticMetaObjectExtraData = {
     0,  MVLambdaBase::qt_static_metacall
 };
 
+static const short qtmetaversion=6;
+#else
+const QMetaObjectExtraData MVLambdaBase::staticMetaObjectExtraData = {0,0};
+static const short qtmetaversion=6;
+#endif
 
 MVLambdaBase::MVLambdaBase(int cnt,QByteArray rt, QByteArray cn, QObject* parent)
 :QObject(parent),m_count(cnt),m_callparm(cn),m_callret(rt),
 qt_meta_data({ // content:
-       6,       // revision
+       qtmetaversion,       // revision
        0,       // classname
        0,    0, // classinfo
        1,   14, // methods (14 is start of method info)
@@ -64,8 +71,16 @@ qt_meta_data({ // content:
        // after this line string_metadata must not be changed
        // !!!!!!!
        //register meta object
-       meta_object=QMetaObject({{&QObject::staticMetaObject, string_metadata.data(),
-               qt_meta_data, &MVLambdaBase::staticMetaObjectExtraData}});
+       meta_object=QMetaObject({{
+               &QObject::staticMetaObject, 
+               string_metadata.data(),
+               qt_meta_data, 
+#if QT_VERSION >= 0x040800
+               &MVLambdaBase::staticMetaObjectExtraData
+#else
+               0
+#endif
+       }});
 }
 
 void* MVLambdaNS::MVLambdaBase::qt_metacast(const char* _clname)