doc: Add protobuf.cpp example

Change-Id: I6b3460c2e1b007716611bf850c29a20b59234236
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

1 files changed, 19 insertions, 0 deletions

diff --git a/doc/reference/modules/protobufcpp-module.qdoc b/doc/reference/modules/protobufcpp-module.qdoc
index 688f1d9e2..63c56c6ca 100644
--- a/doc/reference/modules/protobufcpp-module.qdoc
+++ b/doc/reference/modules/protobufcpp-module.qdoc
@@ -36,6 +36,25 @@
     The \c protobuf.cpp module provides support for generating C++ headers
     and sources from proto definition files using the \l protoc tool.
 
+    A simple qbs file that uses protobuf can be written as follows:
+    \code
+    CppApplication {
+        Depends { name: "protobuf.cpp" }
+        files: ["foo.proto", "main.cpp"]
+    }
+    \endcode
+    A generated header now can be included in the C++ sources:
+    \code
+        #include <foo.pb.h>
+
+        int main(int argc, char* argv[]) {
+            Foo bar;
+            bar.set_answer(42);
+            google::protobuf::ShutdownProtobufLibrary();
+            return 0;
+        }
+    \endcode
+
     \section2 Relevant File Tags
 
     \table