From 558fba07a6ea41e01b11cb98ada86ca87b75c828 Mon Sep 17 00:00:00 2001
From: Tal Lancaster <tal.lancaster+gh@gmail.com>
Date: Wed, 18 Jan 2017 15:53:29 -0700
Subject: [PATCH] mp2.cpp: new example on getting properties

hw.qml: findChild uses objectName; so added it.
---
 mp/CMakeLists.txt |  7 ++++++-
 mp/mp2.cpp        | 43 +++++++++++++++++++++++++++++++++++++++++++
 qml/hw.qml        |  1 +
 3 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 mp/mp2.cpp

diff --git a/mp/CMakeLists.txt b/mp/CMakeLists.txt
index 9a15a32..5f8f9ee 100644
--- a/mp/CMakeLists.txt
+++ b/mp/CMakeLists.txt
@@ -1,7 +1,8 @@
+cmake_minimum_required(VERSION 3.0)
+
 # sets the PROJECT_NAME variable
 project(mpApp)
 
-cmake_minimum_required(VERSION 3.0)
 
 set(CMAKE_AUTOMOC ON)
 
@@ -15,3 +16,7 @@ add_executable(${PROJECT_NAME} ${SRC_LIST})
 # links Qt5Core to the project executable
 target_link_libraries(${PROJECT_NAME} Qt5::Qml Qt5::Quick)
 
+set (SRC2_LIST mp2.cpp)
+add_executable(mp2App ${SRC2_LIST})
+target_link_libraries(mp2App Qt5::Qml Qt5::Quick)
+
diff --git a/mp/mp2.cpp b/mp/mp2.cpp
new file mode 100644
index 0000000..35dc1e7
--- /dev/null
+++ b/mp/mp2.cpp
@@ -0,0 +1,43 @@
+/***
+ Simple example showing how to read a property.
+ Specifically getting the text property from a Text object.
+ and converting it to std::string.
+ 
+ NOTE: The findChild searches on objectName and not id.  
+ id is internal to Quick.
+ 
+ 
+ 1/17/17 -- Tal Lancaster
+ ***/
+
+#include <iostream>
+#include <string>
+
+#include <QGuiApplication>
+#include <QQuickView>
+#include <QtQuick>
+#include <QtQml>
+#include <QtCore>
+
+int main (int argc, char* argv[])
+{
+
+    QGuiApplication q_app (argc, argv);
+    
+    // Using QQuickView
+    QQuickView view;
+    view.setSource(QUrl::fromLocalFile("../qml/hw.qml"));
+    view.show();
+    QObject* object {view.rootObject () };
+    QObject* text {object->findChild<QObject*> ("helloText") };
+    if (text) {
+        std::string str {text->property ("text").toString().toStdString() };
+        std::cout << "from text obj " << str << "\n";
+    }
+    else {
+        std::cout << "text object not found.\n";
+    }
+    
+    return q_app.exec ();
+}
+
diff --git a/qml/hw.qml b/qml/hw.qml
index 695810e..91868de 100644
--- a/qml/hw.qml
+++ b/qml/hw.qml
@@ -7,6 +7,7 @@ Rectangle {
 
     Text {
         id: helloText
+        objectName: "helloText"
         text: "Hello world!"
         y: 30
         anchors.horizontalCenter: page.horizontalCenter