Store a NavigationPane as a QML property

Similar Questions

• JS function as a type of page in QML property

  Hi all

  I'm trying to create useful js 'class' for my blackberry application and save here some information about qml object here is the example of such file js:

  /* * my js */
  
  function Utils(devInfo){ this.devInfo = devInfo; this.text = "test text";
  
   this.getInfo = function(){ return this.text; };}
  

  I want to group some utils functions here and use this js in qml file object, but I don't want to create "Utils" every time, I would like to have a single instance of page qml. I tried to use properties:

  import bb.cascades 1.3
  import com.example.bb10_samples_states 1.0
  import "myscripts.js" as Scripts
  
  Page {
      property variant utils : new Scripts.Utils(deviceInfo)
  
      Container {
          Label {
              id: myLabel
              text: "Hello World"
          }
  
          onTouch: {
              var newLabeltext = utils.getInfo(); // freezing
              myLabel.text = newLabeltext;
          }
      }
  
      attachedObjects: [
          DevInfo{
              id: deviceInfo
          }
      ]
  }
  

  * DevInfo is registered object c ++

  I got the following in the notecard event error message:

  "asset:///main.qml:15: TypeError: result of expression 'utils.getInfo' [[object Object]] is not a function."

  If I do not use the property and only with variable work, everything is ok. The following code works correctly:

  import bb.cascades 1.3
  import com.example.bb10_samples_states 1.0
  import "myscripts.js" as Scripts
  
  Page {
      //property variant utils : new Scripts.Utils(deviceInfo)
  
      Container {
          Label {
              id: myLabel
              text: "Hello World"
          }
  
          onTouch: {
              var utils = new Scripts.Utils(deviceInfo);
  
              var newLabeltext = utils.getInfo();
              myLabel.text = newLabeltext;
          }
      }
  
      attachedObjects: [
          DevInfo{
              id: deviceInfo
          }
      ]
  }
  

  In general, I don't know where I can store object js in qml page to access my functions utils without need to create each time. Any ideas?

  I think I found the answer

  According to this link, there is no global js object and every instance of component QML has own unique copy resources imported from JS:

  ...

  Code-Behind implementation resources

  Most of the JavaScript files imported into a document QML are implementations with State of the QML importation document. In these cases, each instance of the QML object type defined in the document requires a separate copy of the JavaScript and State objects to behave properly.

  The default behavior when importing the JavaScript files must provide a unique and isolated copy for each instance of the QML component. If this JavaScript file any resources or modules with a statement .import, its code will be executed in the same scope as the instance of the QML component and therefore can access and manipulate objects and properties declared in the QML component. Otherwise, it will have its own unique scope, and the objects and properties of the QML component should be passed to the JavaScript file as parameters functions if they are required.

  ...

  http://Qt-project.org/doc/Qt-5/qtqml-JavaScript-resources.html

  So it seems there is no need to implement the model of sigleton or store JS resources in the QML document. I changed my code as follows:

  /**
   * js
   */
  var utils = {
    devInfo : null
  };
  
  function init(deviceInfo){
    utils.devInfo = deviceInfo;
  };
  
  function getText(){
    return utils.devInfo + " done.";
  };
  

  and qml:

  import bb.cascades 1.3
  import com.example.bb10_samples_states 1.0
  
  import "myscripts.js" as Scripts
  
  Page {
      Container {
          Label {
              id: myLabel
              text: "Hello World"
          }
  
          onCreationCompleted: {
              Scripts.init(deviceInfo);
          }
  
          onTouch: {
              myLabel.text = Scripts.getText("Tra-ta-ta");
          }
      }
  
      attachedObjects: [
          DevInfo{
              id: deviceInfo
          }
      ]
  }
  

  It works fine - I can store information in the variable 'utils' and work with qml js objects. Hope so, it will help someone

• Change the contents of cell based selector QML property in container QML

  I have a selector in which I want to have the text in each cell selector display in one of two ways, depending on the State of another control in the QML that surrounds the selector and the other controls.

  My first attempt used only a QML based Picker with PickerItemComponents.  The PickerItemComponents had their text property set to the return value of a utility JS function that takes two arguments - the PickerItemData extracted string and an indicator a boolean to indicate the JS function how to change the string returned to display in the cell of the selector.

  When I try to spend a QML property set on the selector for JS calls in the PickerItemComponents, I get an error log saying:

  "" ReferenceError: can't find variable: ".

  I assume here that a PickerItemComponent is missing the context of the selector containing the same way that a ListItemComponent is not the context of the parent company of the ListView.  However the docs of PickerItemComponent do not seem to set all of the properties that I could use similiarly to the ListItem.view property, which is ListItemComponent.  (In fact, the PickerItemComponent docs don't same spec property of pickerItemData - it only appears in example code).

  So the next thing I plan extends the C++ PickerProvider class.  However, it seems that this class inherits QObject, not so I don't know if once I go to the trouble to write and expose my own version, I'll be able to finally get the QML of the container including down in the correct callback inside my custom PickerProvider.

  Anyone who has been in this way, please share your experience/solution you are able - thanks!

  You can try @simon_hain replica of this thread
  http://supportforums.BlackBerry.com/T5/native-development/using-QProperty-for-a-label-inside-list-VI...

• CODE "NavigationPane.deprecatedPushQmlByString ("QMLFile.qml")' FAIL

  Hey everybody,

  IM creating the menu for my application system.

  NavigationPane {} with multiple pages.

  NavigationPane {
      id: navigationPane
      Page {
          Container {
              background: Color.Black
              layout: AbsoluteLayout {
              }
              ImageView {
                  id: imageViewID
                  imageSource: "asset:///images/LogoNewsChannel.png"
                  scalingMethod: ScalingMethod.Fill
                  translationX: 210.0
                  translationY: 250.0
                  scaleX: 2.0
                  scaleY: 2.0
              }
              Label {
                  text: "News Channel_BB10"
                  translationX: 220.0
                  translationY: 40.0
                  scaleX: 1.5
                  scaleY: 1.5
                  textStyle {
                      base: SystemDefaults.TextStyles.BigText
                      fontWeight: FontWeight.Bold
                      color: Color.Yellow
                  }
              }
              Button {
                  id: button1
                  text: "Noticias"
                  imageSource: "asset:///images/LogoNewsChannel.png"
                  layoutProperties: AbsoluteLayoutProperties {
                      positionX: 10
                      positionY: 800
                  }
                  onClicked: {
                      navigationPane.deprecatedPushQmlByString("noticias.qml");
                  }
              }
  

  This maim.qml call to other pages to make the action but when I push the 'low' for example, notice the application is no not anything. I had read that these codes NavigationPane.deprecatedPushQmlByString ("QMLFile.qml") had been kidnapped.

  I tried with navigationPane.push (QMLFile.qml); but any

  How can I do to call or call the calibrated page open aplication but run only the home page

  Thank you

  I followed the instructions

  Button {
                  id: button1
                  text: "Noticias"
                  imageSource: "asset:///images/LogoNewsChannel.png"
                  layoutProperties: AbsoluteLayoutProperties {
                      positionX: 10
                      positionY: 800
                  }
              onClicked: {
              var page = pageDefinition5.createObject();
                    navigationPane.push(page);
                    }
                   attachedObjects: ComponentDefinition {
                   id: pageDefinition5;
                   source: "noticias.qml"
                     }
  

  but does nothing, if anyone has any other form... I keep calling the main.qml page

• How to connect the ButtonClick events to NavigationPane.popAndDelete within QML

  Hi all

  I know to connect my click event of the button to NavigationPane.popanddelete in the native SDK,

  I want to implement this feature in QML, how to implement it.

  My struct QML is something like this:

  P

  MyHeader.QML
  
  Container{
     Button{
       objectName:"BackButton"
       onClicked:..//how to write here
     }
  }
  
  MyPage.QML
  
  Container{
     MyHeader{
     }
     Container{
     }
  }
  
  within C++
  
              QmlDocument *qml = QmlDocument::create("MyPage.qml");
              AbstractPane *mypage= qml->createRootNode();
             // Button *button = alertPage->findChild("BackButton");
              //QObject::connect(button,SIGNAL(clicked()),this,SLOT(onPreviousClick()));
             m_pagePane->push(mypage);
  

  Thanks in advance...

  Hello

  I want everything first, make sure that you know about the properties of the component in QML. If you have inserted a page in your navigation pane and want to have a back button seems natural, you can use the following code in your definition of QML Page {}:

  paneProperties: {NavigationPaneProperties}
  ButtonBack: {ActionItem}
  Title: 'Back '.
  onTriggered: {}
  _navPane.pop ();
  }
  }
  }

  This will insert a lower bar filled with a previous button following a consistent style.

  If you want to raise the pop event from the QML document via manual button (no), in the property of your onClicked button, you can simply call pop on the handle of your navigation pane.

  for example
  Button {}
  ID: buttonTest
  objectName: "buttonTest.
  text: "text".
  onClicked: {}
  _navPane.pop ();
  }

  Please note that in both cases, you have exposed the handle of "_navPane" in your C++ code with subsequent calls (assuming that m_SidePaneContentQML is the name of your page with the back button):

  m_SidePaneContentQML = QmlDocument::create().load("SidePane/SidePane.qml");
  m_SidePaneQmlContext = m_SidePaneContentQML-> documentContext();
  m_SidePaneQmlContext-> setContextProperty ("_navPane", m_Nav);

  In this case, m_Nav would be the navigation pane that you use.

  Let me know if you need more information, I'm happy to help you.

  Good luck!

  Martin

• How Textfield text on another page qml property access

  Hello

  I started 10 BB development recently and need help. I searched this forum but could not find some information exactly related to my problem (unlike only), or I missed something from basically. My main.qml, I want to access the text property of the textfield of the InputControl.qml to be used as a parameter in my SQLQuery (attached object). I tried to use the fieldname method alias property, but it does not work. I can't feature outside. Here is my code:

  hand. QML

  import bb.cascades 1.4
  import bb.cascades.datamanager 1.2
  import bb.system 1.0
  import bb.data 1.0
  
  Page {
  
      id: root 
  
      titleBar: UIControls {
      }
  
      //! [0]
     content: Container {
  
          leftPadding: ui.du(2)
          rightPadding: ui.du(2)
          topPadding: ui.du(2)
          bottomPadding: ui.du(2)
  
          InputControl {
          }
  
          // The ListView that's used to display the artist data
          //! [1]
          ListView {
              id: myListView
  
              //property variant dq: defaultDataQuery
              // Associate the list view with the data model that's defined in the
              // attachedObjects list
              layout: StackListLayout {
                  headerMode: ListHeaderMode.Sticky
              }
              layoutProperties: StackLayoutProperties {
                  spaceQuota: 1.0
              }
              horizontalAlignment: HorizontalAlignment.Fill
              verticalAlignment: VerticalAlignment.Fill
  
              listItemComponents: [
  
                  ListItemComponent {
                      type:  "item"
  
                      Container {
                          Label {
                              text: ListItemData.Japanisch
                              layoutProperties: StackLayoutProperties {
  
                              }
                              topMargin: 5.0
                              textStyle {
                                  base: SystemDefaults.TextStyles.TitleText
                                  fontWeight: FontWeight.Bold
                                  color: Color.create("#7a184a")
                              }
  
                          }
                          Label {
                              text: ListItemData.Lesung
                              textFit.maxFontSizeValue: 9.0
                              textStyle {
                                  base: SystemDefaults.TextStyles.TitleText
                                  fontWeight: FontWeight.Normal
                                  color: Color.create("#ff1818e9")
                              }
  
                          }
                          Label {
                              text: ListItemData.Deutsch
                              textStyle {
                                  base: SystemDefaults.TextStyles.TitleText
                                  fontWeight: FontWeight.Normal
                              }
  
                              multiline: true
                              textFit.maxFontSizeValue: 8.0
                          }
                          Divider {}
                      }// Container
                  }
                  // Use a standard list item to display the data in the model
              ]    
  
          } // end of ListView
  
      }//![1]
  
      attachedObjects: [
          //! [2]
          // One of the default provided DataModel's
  
          GroupDataModel {
              id: dataModel
              grouping: ItemGrouping.None
          },
          DataSource {
              id: dataSource
  
              // Load the data from an SQL database, based on a specific query
              source: "WadokuJT.db"
              //query: "select Japanisch, Deutsch, Lesung from WadokuJT where Deutsch like '%Wasser%'"
              query: "select Japanisch, Deutsch, Lesung from WadokuJT where Deutsch like '%" + stext + "%'";
  
              onDataLoaded: {
                  // After the data is loaded, insert it into the data model
                  dataModel.insertList(data);
  
              }
              type: DataSourceType.Sql
          } // end of DataSource      
  
      ]//! [2]  
  
      actions: [
          //! [8]
          ActionItem {
              title: qsTr("Search")
              imageSource: "asset:///images/ic_search.png"
              ActionBar.placement: ActionBarPlacement.Signature
              onTriggered: {
                  myListView.dataModel = null
                  dataSource.load()
                  //myListView.dq = defaultDataQuery
                  myListView.dataModel = dataModel 
  
              }
          },
  
          ActionItem {
              title: qsTr("Settings")
              imageSource: "asset:///images/ic_settings.png"
              onTriggered: {
  
              }
          },
  
          ActionItem {
              title: qsTr("Help")
              imageSource: "asset:///images/ic_help.png"
              onTriggered: {
  
              }
          }                           
  
      ]//![8]
  
  } // end of Page
  

  And here is my InputControl.qml

  import bb.cascades 1.4
  
   Container {
       property alias stext: txtSearchText.text
  
      Label {
          id: lblSearchText
          text: "Searchtext\r\n"
  
      }
  
      TextField {
          id: txtSearchText
          layoutProperties: FlowListLayoutProperties {
  
          }
          hintText: "Enter Searchtext"
      }
  }
  

  Any help is greatly appreciated. Thank you.

  Give InputControl an id (in main.qml), for example someId.

  Access the variable an alias like someId.stext

• QML property after onCreationComplete is called?

  Hey all,.

  I try to send an ID of one QML page into another using properties. On the second page, I want to put a list with data corresepoding to the ID that was passed along.

  This is the top of the page that is being created and the

  {Page}
  property alias workoutname: root.workoutName
  property alias workoutid: root.workoutID

  It is the container that contains the list view

  {Of container
  ID: root
  property int workoutID:-1
  "" workoutName variant property:

  It's the onCreationComplete of the Page that has the ID passed in

  onCreationCompleted: {}
  segmentList.dataModel = _Dal.GetListOfWorkoutSegments (root.workoutID);
  }

  The problem is when onCreationComplete is called the root.workoutID is always-1 instead of the value as defined when I created the page?

  Creation of the page below.

  page var = workoutPage.createObject ();
  page.workoutid = id
  page.workoutname = name
  homeNavigationPane.push (page);

  I add these pages through a ComponentDefinition.

  Thank you in advance.

  -J

  It's expected behaviour

  You can do this way:

  page var = workoutPage.createObject ();
  page.workoutid = id
  page.workoutname = name

  page.init)
  homeNavigationPane.push (page);

  .. .and inside yopur page you have a

  function init() {}

  where you can use your properties

• CreateObject QML property binding

  Hello, I use the createObject command to dynamically create objects on a qml page, I can do that, but now I want some properties of the dynamically object objects to bind on some properties of the parent, how it is possible?

  Greetings silajm

  Try the following detour

  1 make sure you have your parent properties loan (try also to declare them as alias just to be sure)

  2 use the parent properties during the construction of the object in the format: parent.property (or same parent.parent...)

  3 createObject(explicit parent id)

  It should work. In the case where it does not have to launch your actions onCreationCompleted where I am sure that you will get parent.property.

  Try and tell us.

• Can not access the context in QML property

  So I have an arraydatamodel in the CPP file, I use qml-> setContextProperty (...) to set it up to allow QML to access, the strangest part is, no matter if I put it in navigationPane Page or a container, it keeps saying can't find not variable, but in the same QML in ListView, they can access it without a problem. The other weird part, it is an another QML is able to access it in the tag of the page, the same model.

  By default of the Jun 02 9000 REVIEWS asset:///main.qml:24 09:12:59.416 com.example.IntervalTimer1.testDev_ervalTimer1a7a2c2e2.427733134: ReferenceError: can't find variable: eventsModel
  By default of the Jun 02 9000 REVIEWS asset:///main.qml:110 09:12:59.416 com.example.IntervalTimer1.testDev_ervalTimer1a7a2c2e2.427733134: ReferenceError: can't find variable: eventsModel

  Here is my code

  import bb.cascades 1.0
  
  NavigationPane {
      id: navigationPane
      backButtonsVisible: false
      // Javascript definition
      function udpateTotalTimeLabel() {
          console.log("In updateTotalTimeLabel function");
          var totalHour = 0, totalMinute = 0, totalSecond = 0;
          // To debug javascript object print function
          var print = function(o) {
              var str = '';
  
              for (var p in o) {
                  if (typeof o[p] == 'string') {
                      str += p + ': ' + o[p] + '; 
  ';
                  } else {
                      str += p + ': { 
  ' + print(o[p]) + '}';
                  }
              }
  
              return str;
          }
          console.log("EventsModel: " + eventsModel.size());
          for (var i = 0; i < eventsModel.size(); i ++) {
              var currentEvent = eventsModel.data([ i ]);
              console.log("EventsEvent: " + currentEvent["EventName"]);
              totalHour += currentEvent["EventHour"];
              totalMinute += currentEvent["EventMinute"];
              totalSecond += currentEvent["EventSecond"];
          }
          if (totalHour < 10) totalHour = "0" + totalHour;
          if (totalMinute < 10) totalMinute = "0" + totalMinute;
          if (totalSecond < 10) totalSecond = "0" + totalSecond;
  
          totalTimeLabel.text = totalHour + ":" + totalMinute + ":" + totalSecond;
      }
  
      function onDataReady() {
          console.log("Received DataReady signal");
          navigationPane.udpateTotalTimeLabel();
          newEventSheet.close();
      }
  
      Page {
          id: root
          titleBar: TitleBar {
              title: "Interval Timer"
          }
  
  .....
      onCreationCompleted: {
          navigationPane.udpateTotalTimeLabel();
          console.log("No of EventsModel: " + eventsModel.size());
          console.log("In sheet creationCompleted");
          mainObj.dataReady.connect(navigationPane.onDataReady);
      }
  }
  

  In the PRC

  // Default empty project template
  #include "applicationui.hpp"
  
  #include 
  #include 
  #include 
  #include "CountdownTimer.hpp"
  
  using namespace bb::cascades;
  
  ApplicationUI::ApplicationUI(bb::cascades::Application *app)
  : QObject(app)
  {
      // create scene document from main.qml asset
      // set parent to created document to ensure it exists for the whole application lifetime
      QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);
  
      // Initialize the Array Data Model for holding events
      this->eventsModel = new ArrayDataModel();
      // For Testing only
      QVariantMap event;
      event["EventName"] = "Event1";
      event["EventHour"] = "00";
      event["EventMinute"] = "01";
      event["EventSecond"] = "02";
      this->eventsModel->append(event);
  
      // create root object for the UI
      AbstractPane *root = qml->createRootObject();
  
      // Registering the QTimer type to QML
      qmlRegisterType("TimerLibrary", 1, 0, "CountdownTimer");
  
      // Setting the access for QML to member variable
      qml->setContextProperty("eventsModel",this->eventsModel);
      qml->setContextProperty("mainObj",this);
  
      // set created root object as a scene
      app->setScene(root);
  }
  
  .....
  
  void ApplicationUI::refreshData()
  {
      emit dataReady();
  }
  

  Thank you.

  The fixed.

  You must call setContextProperty before calling createRootObject.

• Setting a QML property in another file

  I'm pretty new to stunts, so I hope someone could help me with this. This piece of code is supposed to load main.qml, with a button to open a separate sheet (CountryList.qml). On this sheet, it loads a local XML database in a ListView. The user selects one of the items in the ListView, which is supposed to give selectedcountry.text. How would we do that last one?

  hand. QML:

  import bb.cascades 1.2
  
  Page {
      Container {
          Button {
              text: "Pick a country"
              onClicked: {
                  countryList.open()
              }
          }
          Label {
              text: "Selected Country: "
          }
          Label {
              id: selectedcountry
              text: ""
          }
      }
      attachedObjects: [
          CountryList{
              id: countryList
          }
      ]
  }
  

  CountryList.qml:

  import bb.cascades 1.2
  import bb.data 1.0
  
  Sheet {
      id: countryList
      content: Page {
          titleBar: TitleBar {
              title: "Pick a Country"
              dismissAction: ActionItem {
                  title: "Close"
                  onTriggered: {
                      countryList.close()
                  }
              }
          }
          Container {
              Header {
                  title: "List of countries"
              }
              ListView {
                  id: listView
                  dataModel: repoDataModel
                  listItemComponents: [
                      ListItemComponent {
                          type: "header"
                          Container {
                              Label {
                                  text: ""
                              }
                          }
                      },
                      ListItemComponent {
                          type: "item"
                          Container {
                              Label {
                                  text: ListItemData.countryname
                              }
                              Label {
                                  text: "Capital: " + ListItemData.capital
                                  textStyle.fontSize: FontSize.Small
                              }
                              Divider {
                              }
                          }
                      }
                  ]
                  onTriggered: {
                      //Something should go here
                  }
              }
          }
      }
      attachedObjects: [
          GroupDataModel {
              id: repoDataModel
              sortingKeys: [
              "countryname"
              ]
              sortedAscending: false
              grouping: ItemGrouping.ByFullValue
          },
          DataSource {
              id: repoDataSource
              remote: true
              source: "countries.xml"
              query: "repo/country"
              type: DataSourceType.Xml
              onDataLoaded: {
                  repoDataModel.clear();
                  repoDataModel.insertList(data)
              }
          }
      ]
      onCreationCompleted: {
          repoDataSource.load();
      }
  }
  

  onTriggered() your worksheet should issue a

  signal countrySelected (country)

  and the opening Page of the sheet must connect to this signal
  a function such as

  function onCountrySelected (country) {}

  selectedcountry. Text = country

  }

  your current solution always sets the value - even if the user does not select something and only closes the leaf

  This must be decoupled

• Broken defaultSaveFileNames FilePicker component QML property?

  I'm trying to use a FilePicker to back up and restore user data in a JSON file.  I'm the pre-population of the property with the name of the file defaultSaveFileNames is to have its extension (".json") removed when the UI FilePicker slides in on the application user interface.  Is - this just broken?  There is a thread WebWorks describing the same problem here:

  http://supportforums.BlackBerry.com/T5/Web-and-WebWorks-development/invokeFilePicker-filter-options-...

          FilePicker {
              id: backupRestoreFilePicker
              type: FileType.Document
              directories : ["/accounts/1000/shared"]
              viewMode: FilePickerViewMode.ListView
          defaultSaveFileNames: ["userData.json"]
              onFileSelected: {
                  // handler code omitted
              }
          }
  

  The FilePicker UI does is display "userData" as suggests recorded file name.

  He adds the .json at the end of the file name, it it just hides the Textinput

  I use it and it adds .bar at the end of the file name, the user types into:
  {FilePicker}
  string saveName property
  ID: saver
  defaultSaveFileNames: ['.bar']
  mode: FilePickerMode.Saver
  Title: "download the update.
  directories: [' / accounts / "]

• I cant store files ' t in my CC property

  Hi I have a photography of clouds creative plan, but active, I can't download files.

  CC said: 100% used = 13.91 GB of 2 GB.

  I deleted all the files that were there, but still in error.

  What I can to get back work?

  Thank you

  Carlos

  Links for synchronization of files that can help... all the links I have, since I don't know your specific problem

  FAQ - https://forums.adobe.com/thread/1937790

  -https://forums.adobe.com/community/creative_cloud/host_sync

  -http://helpx.adobe.com/creative-cloud/help/sync-settings.html

  -http://helpx.adobe.com/creative-cloud/kb/arent-my-files-syncing.html

  -Size limits https://forums.adobe.com/thread/1488242

  -sync and send a link http://forums.adobe.com/thread/1427516?tstart=0

  -Record ghost https://forums.adobe.com/thread/1490445 problem

  -an overview of https://assets.adobe.com/files assets

  -File sharing https://forums.adobe.com/thread/1838790

• How to return the QML C++ bb::cascades:Control as a property object?

  Hi all

  I need to return the value of the property QML in C++ code, problem is that this value is object of bb::cascades:Control

  Look at the example:

  import bb.cascades 1.2
  
  Page {
   property NavigationPane currentNavigationPane: tab1.navHandle
   property int testprop:0
  }
  

  In C++, I need to retrieve the value of currentNavigationPane property (I suppose it must point to NavigationPane *)

         QVariant const   prop=__current_page->property("currentNavigationPane");
          NavigationPane* nav_p=prop.value();
          if (nav_p!=NULL){
              qDebug()<<"nav_p is not NULL";
          }
          qDebug()<
  As a result of this code: nav_p is the null pointer and app crashes without any note of debugging on qDebug()<>
  			 
  I found the solution by Exhibitor class c ++ in QML and I can call its methods with pointer to bb::cascades:Control as a parameter
  QML
  Page {
  id:this_page
      onCreationCompleted: {
          mainCPP.UpdatePage(this_page);
      }
  }
  
  C++
  Q_INVOKABLE void UpdatePage(bb::cascades::Page *call_back_page){
  if(call_back_page){
  qDebug()<<"Page is valid";
  }
  }
  
  By this method, I can use control of Cascade in C++
   
  		   

• Property of block size of the data store

  How to get the block size defined in the configuration of the data store tab. Is there a property, I should be looking. Currently, I tried getting the object managed data store but were not able to get the size of the block that.

  If you are looking for the solution with PowerCLI, take a look at Re: version list VMFS and block size of all data stores

  André

• NavigationPane not burst

  I'm trying to rewright of my JavaScript application to C + c++ / QML.  I'm new to QML, but I thought it wise to write the UI in a QML and then the logic and the C++ user interface controls.  The problem I see is when I call the function pop() of C++, the screen never appears.  Someone at - it ideas?

  Main.cpp

  #include "wpapp.hpp"
  
  // include JS Debugger / CS Profiler enabler
  // this feature is enabled by default in the debug build only
  #include 
  
  using ::bb::cascades::Application;
  
  Q_DECL_EXPORT int main(int argc, char **argv)
  {
      // this is where the server is started etc
      Application app(argc, argv);
  
      WPApp *wpApp = new WPApp (&app);
  
      // we complete the transaction started in the app constructor and start the client event loop here
      return Application::exec();
      // when loop is exited the Application deletes the scene which deletes all its children (per qt rules for children)
  }
  

  wpapp. HPP

  // Application with UI adaptability support template
  #ifndef WPApp_HPP_
  #define WPApp_HPP_
  
  #include 
  #include 
  #include 
  #include 
  #include 
  #include "library/StatData.h"
  
  using std::vector;
  using std::string;
  using namespace bb::cascades;
  
  namespace bb {
      namespace cascades {
          class Application;
      }
  }
  
  /*!
   * @brief Application pane object
   *
   *Use this object to create and init app UI, to create context objects, to register the new meta types etc.
   */
  class WPApp : public QObject
  {
  
      Q_OBJECT
  public:
  
      WPApp(Application *);
  
      virtual ~WPApp();
  
      Q_INVOKABLE void addStats(QString);
      Q_INVOKABLE void showAddScreen();
  
      void addRemoveStat(string identifiers, bool add);
  
  private:
      vector mActiveStats;
      Page *mRootPane;
      NavigationPane *mNavPane;
      Application *mApp;
  };
  
  #endif /* WPApp_HPP_ */
  

  wpapp.cpp

  // Application with UI adaptability support template
  #include "wpapp.hpp"
  #include 
  #include 
  #include 
  #include 
  #include 
  #include 
  #include 
  #include 
  #include 
  #include 
  
  #include "Utilities.h"
  #include "connector/WConnector.h"
  #include "library/StatData.h"
  
  using std::string;
  using std::vector;
  using namespace bb::cascades;
  using namespace bb::system;
  
  WPApp::WPApp(Application *app) :
          QObject(app)
      {
      QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);
      qml->setContextProperty("app", this);
      //qml->setContextProperty("second", m_pane);
      if (!qml->hasErrors()) {
  
          mRootPane = qml->createRootObject();
  
          mNavPane = new NavigationPane();
  
          // set created root object as a scene
          //mNavPane->push(mRootPane);
          //Application::instance()->setScene(mNavPane);
          mApp = app;
          mApp->setScene(mRootPane);
      }
  }
  
  WPApp::~WPApp() {
  
  }
  
  void WPApp::addStations(QString text) {
      SystemToast *st = new SystemToast(Application::instance());
  
      string sIdentifiers = text.toStdString();
      NavigationPane *mNavPane = mNavPane->findChild("navigationPane");
      int ct = mNavPane->count();
      mNavPane->pop();
      st->setBody(text);
      st->setPosition(SystemUiPosition::MiddleCenter);
      st->show();
      addRemoveStat(sIdentifiers, true);
  
  }
  
  void WPApp::showAddStat() {
      QmlDocument *qml = QmlDocument::create("asset:///AddScreen.qml").parent(
              this);
      qml->setContextProperty("app", this);
      Page *page = qml->createRootObject();
      mNavPane->push(page);
  }
  
  void WPApp::addRemoveStat(string sIdentifiers, bool bAdd) {
  
  }
  

  Main.QML

  // Application with UI adaptability support template
  import bb.cascades 1.0
  import bb.system 1.0
  
  NavigationPane {
      backButtonsVisible: true
      id: navigationPane
      objectName: navPane
  
  // create application UI page
  Page {
      actions: [
          ActionItem {
              title: "Add"
              onTriggered: {
                  //navigationPane.push(newPage);
                  app.showAddScreen();
              }
              ActionBar.placement: ActionBarPlacement.OnBar
              imageSource: "images/ic_add.png"
          },
          ActionItem {
              title: "Refresh"
              onTriggered: app.initiateRequest()
              ActionBar.placement: ActionBarPlacement.OnBar
              imageSource: "images/ic_rotate.png"
          },
          ActionItem {
              title: "Remove All"
              onTriggered: app.initiateRequest()
              imageSource: "images/ic_delete.png"
          },
          ActionItem {
              title: "Settings"
              onTriggered: app.initiateRequest()
              imageSource: "images/ic_settings.png"
          }
      ]
  
      Container {
          layout: DockLayout {
          }
          AppBackground {
              // setup application background
              background: Color.Black
              verticalAlignment: VerticalAlignment.Fill
              horizontalAlignment: HorizontalAlignment.Fill
          }
          Container {
              horizontalAlignment: HorizontalAlignment.Fill
              Container {
                  layoutProperties: StackLayoutProperties {
                      spaceQuota: 1.0
                  }
                  layout: DockLayout {
                  }
                  verticalAlignment: VerticalAlignment.Fill
                  horizontalAlignment: HorizontalAlignment.Fill
                  Container {
                      property int padding: 10
                      layout: StackLayout {
                          id: stationStacks
  
                          // change layout direction according to current device orientation
                          // this feature is disabled for 720x720 devices in current template
                          // see: assets/720x720/AppOrientationHandler.qml
                          orientation: (orientationHandler.orientation == UIOrientation.Portrait) ? LayoutOrientation.TopToBottom : LayoutOrientation.LeftToRight
                      }
                      // create 9-sliced frame for this container
                      background: frame.imagePaint
  
                      topPadding: padding
                      bottomPadding: padding
                      leftPadding: padding
                      rightPadding: padding
                      verticalAlignment: VerticalAlignment.Center
                      horizontalAlignment: HorizontalAlignment.Center
                  }
              }
          }
          attachedObjects: [
              AppOrientationHandler {
                  // custom orientation handler
                  // the different handler is used for 720x720 in this template
                  // to disable oriantation adaptability for this kind of devices
                  id: orientationHandler
              }
          ]
  
      }
      attachedObjects: [
          // Create the ComponentDefinition that represents the custom
          // component in myPage.qml
          ComponentDefinition {
              id: addStation
              source: "AddScreen.qml"
          }
      ]
  } // Page
  } // NavigationPane
  

  AddScreen.qml

  import bb.cascades 1.0
  import bb.system 1.0
  
  Page {
      actions: [
          ActionItem {
              title: "Search"
              ActionBar.placement: ActionBarPlacement.OnBar
              imageSource: "images/ic_search.png"
          },
          ActionItem {
              title: "Add"
              onTriggered: {
                  app.addStat(identifierInput.text)
              }
              ActionBar.placement: ActionBarPlacement.OnBar
              imageSource: "images/ic_add.png"
          }
      ]
      titleBar: TitleBar {
          title: "Add Stats"
          appearance: TitleBarAppearance.Plain
      }
  
      Container {
          layout: StackLayout {
              orientation: LayoutOrientation.TopToBottom
          }
          background: Color.DarkGray
          Container {
              layout: StackLayout {
                  orientation: LayoutOrientation.LeftToRight
              }
  
              Label {
                  text: "
  Identifiers:
  "
                  textFormat: TextFormat.Html
              }
  
              TextField {
                  id: identifierInput
                  hintText: "XXX YYY"
                  horizontalAlignment: HorizontalAlignment.Left
                  verticalAlignment: VerticalAlignment.Top
                  inputMode: TextFieldInputMode.Text
                  /*onTextChanging: {
                      app.mNewIdentifiers = text
                      console.log("Idents " + app.mNewIdentifiers)
                  }*/
              }
          }
          Container {
              layout: StackLayout {
                  orientation: LayoutOrientation.TopToBottom
              }
              Label {
                  text: ""
              }
              Picker {
                  id: favoritesPicker
                  title: "Favorites"
              }
          }
      }// Container
  } // Page
  

  Hello
  Add quotes around objectName:

  objectName: "navigationPane.