How to connect the slot button Cascades

I am new to waterfalls and QML and yesterday I tried to port native QtWidget app to waterfalls, but it does not. The problem is, I add some buttons to the container in QML main file and coded my custom slot function which should be executed when the user click some button. But I don't know how to connect the clicked() signal to my function from the custom location.

When using

Connect (CloseButton, signal(Button::clicked()),this,slot(on_closeButton_clicked()));) or connect (exitButton, SIGNAL (clicked ()), this, SLOT (on_exitButton_clicked ())); I get error "unable to connect SIGNAL (null) to SLOT (on_closeButton_clicked ()) ' on all the buttons.

Here is my code in app.cpp

    QmlDocument *qml = QmlDocument::create("main.qml");
    qml->setContextProperty("cs", this);

    AbstractPane *root = qml->createRootNode();
    textHolder = root->findChild("textHolder");
    openButton = root->findChild("openButton");
    saveButton = root->findChild("saveButton");
    saveAsButton = root->findChild("saveAsButton");
    closeButton = root->findChild("closeButton");
    exitButton = root->findChild("exitButton");


//one slot function

void App::on_closeButton_clicked()
//if( | QIODevice::Text)){

And qml

import bb.cascades 1.0

Page {
    id: mainPage
    Container {
    id: main
    Container {
    id: buttonHolder
    scrollMode: ScrollMode.None
            layout: StackLayout {
                layoutDirection: LayoutDirection.LeftToRight
                leftPadding: 5.0
                rightPadding: 5.0
                topPadding: 5.0
                bottomPadding: 5.0
            touchPropagationMode: TouchPropagationMode.None
            objectName: "buttonHolder"
            Button {
                id: openButton
                text: "Open"
            Button {
                id: closeButton
                text: "Close"
                onClicked: {
            Button {
                id: saveButton
                text: "Save"
                onClicked: {
            Button {
                id: saveAsButton
                text: "Save As"
                onClicked: {
            Button {
                id: exitButton
                text: "Exit"

        Container {
            id: textHolderArea
            layout: AbsoluteLayout {
            topMargin: 5.0
            leftMargin: 1.0
            rightMargin: 1.0
            bottomMargin: 2.0
            TextArea {
                id: textHolder
                textStyle.fontStyleHint: FontStyleHint.Default
                layoutProperties: AbsoluteLayoutProperties {
                leftMargin: 5.0
                rightMargin: 5.0
                preferredHeight: 645.0
                textStyle.justification: TextJustification.Enabled
                objectName: "textHolder"
                text: ""

And I have no idea how call my app.cpp C++ slot in my main QML file


Your buttons should an objectName set to be visible to C++, the id is only visible inside the QML.

Tags: BlackBerry Developers

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