Introduce QTypeInfoMerger.

QTypeInfoMerger class was created to allow "inheriting" QTypeInfo
traits. The class implementation was based on the QTypeInfo<QPair<>>
specialization, therefore the specialization was refactored to
use the new class.

Change-Id: I4ff3e5eac1d55da086dad84274cce2b2c0a721be
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/corelib/doc/snippets/code/src_corelib_global_qglobal.cpp b/src/corelib/doc/snippets/code/src_corelib_global_qglobal.cpp
index dc6c3aa616..8feac30d1d 100644
--- a/src/corelib/doc/snippets/code/src_corelib_global_qglobal.cpp
+++ b/src/corelib/doc/snippets/code/src_corelib_global_qglobal.cpp
@@ -538,6 +538,20 @@ CApaApplication *myApplicationFactory();
 void myMessageHandler(QtMsgType, const QMessageLogContext &, const char *);
 //! [49]
 
+//! [50]
+class B {...};
+class C {...};
+class D {...};
+struct A : public B {
+    C c;
+    D d;
+};
+//! [50]
+
+//! [51]
+template<> class QTypeInfo<A> : public QTypeInfoMerger<A, B, C, D> {};
+//! [51]
+
 //! [qlikely]
     // the condition inside the "if" will be successful most of the times
     for (int i = 1; i <= 365; i++) {