mp/ Example of setting QML property from C++

CMakeLists.txt

@@ -1,7 +1,10 @@
+cmake_minimum_required(VERSION 3.0)
+
 # sets the PROJECT_NAME variable
 project(qmlApp)
 
-cmake_minimum_required(VERSION 3.0)
+add_definitions(-std=c++14)
+set(CMAKE_CXX_FLAGS "${CMAXE_CXX_FLAGS} -Wall")
 
 set(CMAKE_AUTOMOC ON)
 
@@ -15,6 +18,8 @@ add_executable(${PROJECT_NAME} ${SRC_LIST})
 # links Qt5Core to the project executable
 target_link_libraries(${PROJECT_NAME} Qt5::Widgets Qt5::Qml Qt5::Quick)
 
+add_subdirectory (mp)
+
 add_custom_target(copyQmlFiles ALL
     DEPENDS ${PROJECT} ${CMAKE_SOURCE_DIR}/qml
     COMMAND cmake -E copy_directory ${CMAKE_SOURCE_DIR}/qml ${CMAKE_BINARY_DIR}/qml

mp/CMakeLists.txt

@@ -0,0 +1,17 @@
+# sets the PROJECT_NAME variable
+project(mpApp)
+
+cmake_minimum_required(VERSION 3.0)
+
+set(CMAKE_AUTOMOC ON)
+
+find_package(Qt5 COMPONENTS Qml Quick REQUIRED)
+
+set(SRC_LIST mp.cpp)
+
+# add an executable based on the project name and source list
+add_executable(${PROJECT_NAME} ${SRC_LIST})
+
+# links Qt5Core to the project executable
+target_link_libraries(${PROJECT_NAME} Qt5::Qml Qt5::Quick)
+

mp/mp.cpp

@@ -0,0 +1,34 @@
+/***
+ Simple example showing how to set properties.
+ item->setWidth (300);
+ rect->setProperty ("color", "red");
+ 
+ 1/17/17 -- Tal Lancaster
+ ***/
+#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/itemRect.qml"));
+    view.show();
+    QQuickItem* item {view.rootObject () };
+    item->setWidth (300);
+    
+    QObject* rect = item->findChild<QObject*> ("rect");
+    if (rect) {
+        rect->setProperty ("color", "red");
+    }
+    
+    
+    return q_app.exec ();
+}
+

qml/itemRect.qml

@@ -0,0 +1,10 @@
+import QtQuick 2.0
+
+Item {
+    width: 100; height: 100
+
+    Rectangle {
+        anchors.fill: parent
+        objectName: "rect"
+    }
+}