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--- qt-quick-for-designers-1:components [2013/06/22 04:16] – mithat
+++ qt-quick-for-designers-1:components [2013/07/06 22:53] (current) – [Resources] mithat
@@ Line 48: / Line 48: @@
 ===== Properties =====
-  * You can declare a ''property'' do expose a component's internal propery to the outside:
+  * You can declare a ''property'' to expose a component's internal propery to the outside:
 <file javascript ButtonSimple2.qml>
 import QtQuick 1.0
@@ Line 93: / Line 93: @@
 ===== Signals =====
+  * A ''signal'' declaration is similar to a ''property'' declaration except that it's used to let the outside world determine behavior.
+  * In the Button below, ''buttonClicked'' is declared as a signal, and that signal is emitted whenever the MouseArea is clicked.
+<file javascript Button.qml>
+import QtQuick 1.0
+Image {
+    id: button
+    source: "images/button.png"
+    property string labelText
+    signal buttonClicked()
+    Text {
+        id: label
+        text: labelText
+        color: "white"
+        anchors.horizontalCenter: parent.horizontalCenter
+        anchors.top: parent.top
+        anchors.topMargin: 6
+    }
+    MouseArea {
+       anchors.fill: parent
+       onClicked: {
+           button.buttonClicked();
+       }
+   }
+}</file>
+  * The actual behavior is defined in the file where Button is used (as ''onButtonClicked''):
+<file javascript resuing-button.qml>
+import QtQuick 1.0
+Item {
+    id: myItem
+    width: 400
+    height: 400
+    Button {
+        id: button
+        labelText: "PRESS"
+        anchors.horizontalCenter: myItem.horizontalCenter
+        anchors.bottom: myItem.bottom
+        anchors.bottomMargin: 20
+        onButtonClicked:{
+            button.labelText="Hooray!";
+        }
+    }
+}
+</file>
+--------------------------------------------------------------
+====== Resources ======
+  * {{:qt-quick-for-designers-1:images.zip|}}
+  * All source code is subject to this [[copyright header|copyright]].