Necessary to remove the container referenced by QObject subclass?

Similar Questions

• Remove the container blocks app

  In my application the user can add new container objects to will be and I want to give them the ability to delete these objects as well.  In my design, I have alread QML set for the container that contains other containers, a portion of text, and a context menu.  Menu is in the context where I give the user the option to delete the container.  When remove is called a C++ function goes through my data model and removes the container of the user interface and removes the application data model object.  Problem is after I called the (container) remove call I call delete against the container and the application crashes.  I think that the crash is because I'm calling Delete against the container too early, but I don't know, and if I'm what would be a good way to work around this problem?  Here is a condensed version of the QML/code I use:

  hand. QML. stationContainer is where all new containers are added and removed

  // Application with UI adaptability support template
  import bb.cascades 1.0
  import bb.system 1.0
  
  NavigationPane {
      backButtonsVisible: true
      id: navigationPane
      objectName: "navigationPane"
  
      // create application UI page
      Page {
          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
                      ScrollView {
                          scrollViewProperties {
                              scrollMode: ScrollMode.Vertical
                          }
  
                      Container {
                          property int padding: 10
                          objectName: "stationStacks"
                          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
                          }
  
                          topPadding: padding
                          bottomPadding: padding
                          leftPadding: padding
                          rightPadding: padding
                          verticalAlignment: VerticalAlignment.Center
                          horizontalAlignment: HorizontalAlignment.Center
                      }
                  }
                  }
              }
          }
      }    // Page
      onPopTransitionEnded: { page.destroy(); }
  }// NavigationPane
  

  Container for model that is reused.

  import bb.cascades 1.0
  
  Container {
      topPadding: 25
      layout: StackLayout {
          orientation: LayoutOrientation.TopToBottom
      }
  
      Container {
          layout: StackLayout {
              orientation: LayoutOrientation.LeftToRight
          }
  
          Container {
  
              Container {
                  id: identifierButton
                  objectName: "identifierButton"
                  layout: StackLayout {
                      orientation: LayoutOrientation.LeftToRight
                  }
                  contextActions: [
                      ActionSet {
                          title: "Actions"
                          subtitle: "This is an action set."
  
                          actions: [
                              ActionItem {
                                  title: "Info"
                                  onTriggered: {
                                      app.showStationInfo(sIdentifier);
                                  }
                              },
                              ActionItem {
                                  title: "Refresh"
                                  onTriggered: {
                                      app.refreshStation(sIdentifier);
                                  }
                              },
                              ActionItem {
                                  title: "Remove"
                                  onTriggered: {
                                      app.removeStation(sIdentifier);
                                  }
                              }
                          ]
                      } // end of ActionSet
                  ] // end of contextActions list
                  Label {
                      id: identifierLabel
                      text: "Label"
                      objectName: "identifierLabel"
  
                  }
  
                  onTouch: {
                      if (event.isDown() || event.isMove()) {
                          // Focused, change the background
                          identifierButton.background = Color.Gray;
                      } else {
                          identifierButton.background = Color.create("#ff21697d");
                      }
                  }
                  verticalAlignment: VerticalAlignment.Center
                  horizontalAlignment: HorizontalAlignment.Left
  
              }
          }
          Container {
              Label {
                  id: stationName
              }
          }
      }
      Container {
          TextArea {
              id: stationData
          }
  
      }
  }
  

  How to take the container of model and use:

  /**
   * Setup and add the UI object for the station
   */
  void WeatherPilotApp::CreateStationUI(StationData *pStationData) {
      Container *stackPane = mApp->findChild("stationStacks");
  
  // Add the UI component
      QmlDocument *qml =
              QmlDocument::create("asset:///stationTafMetar.qml").property("app",
                      this).property("sIdentifier", pStationData);
      Container *stationContainer = qml->createRootObject();
      stationContainer->setObjectName(pStationData->getIdentifier());
      QString objectName = QString::fromStdString("identifierLabel");
      Label* label = stationContainer->findChild(objectName);
      label->setText(pStationData->getIdentifier());
  
      stackPane->insert(0, stationContainer);
  }
  

  The code to remove station is here:

  void WeatherPilotApp::removeStation(QObject* qStationData) {
      StationData* stationData = (StationData*) qStationData;
      addRemoveStation(stationData->getIdentifier(), false);
  }
  
  /**
   * Function will add, remove, or update all stations passed in as a
   * comma or space separated list
   */
  void WeatherPilotApp::addRemoveStation(QString sIdentifiers, bool bAdd) {
      qDebug() << "AddStation " << sIdentifiers;
  
      sIdentifiers.replace(',', ' ');
      vector splitIdentifiers;
      QStringList idList = sIdentifiers.split(' ', QString::SkipEmptyParts);
      for (QStringList::const_iterator iter = idList.constBegin();
              iter != idList.constEnd(); ++iter) {
  
          QString id = (*iter).toLocal8Bit().constData();
  
          splitIdentifiers.push_back(id.toUpper());
          qDebug() << "Added " << id;
      }
  
      if (bAdd) {
          //handle addition logic
      }
      // Remove the stations
      else {
          for (unsigned int idx = 0; idx < splitIdentifiers.size(); idx++) {
              for (vector::iterator it = mActiveStations.begin();
                      it != mActiveStations.end();) {
                  if (((StationData*) *it)->getIdentifier().compare(
                          splitIdentifiers[idx]) == 0) {
                      delete *it; // delete the StationData object
                      it = mActiveStations.erase(it); // Remove it from the vector
  
                      break;
                  } else {
                      it++;
                  }
              }                        // Get the main parent container
              Container *stackPane = mApp->findChild("stationStacks");                        // Get a pointer to this stations Container pointer
              Container *stationContainer = stackPane->findChild(
                      splitIdentifiers[idx]);
              bool success = stackPane->remove(stationContainer);
              if (!success) {
                  qDebug() << "Failed to remove " << splitIdentifiers[idx];
              } else {
                  delete stationContainer; // free up the memory
              }
          }
      }
  }
  

  Try deleteLater() and see if it makes a difference, but to be honest, I do exactly the same thing in my code...

  void CardEditor::onFieldRemoved(TitleValueField* tvf) {
      if (tvf) {
          CardLabelEdit* c = mLabelMap.value(tvf);
  
          if (c) {
              remove(c);
              delete c;
              mLabelMap.remove(tvf);
          }
      }
  }
  

  This command removes a CustomControl which is basically just a container with two TextFields in so pretty similar to what you want to do.

  My guess is that the problem is elsewhere perhaps with your vectorial cartography or your logic of pointer, try putting some checks and/or set a breakpoint on the removal of line and see the status of your vector and pointers at this time there.

  If you have configured all signals with these dynamic objects, you also need to exercise caution.

  [Edit] There was a good discussion about deleteLater in this thread...

  http://supportforums.BlackBerry.com/T5/native-development/deleteLater-vs-destroy-dynamic-objects-in-...

• Create/remove the container following the event full/empty container

  Mr President.

  I'm creating a simple editor. now, I want to create a new container each previous time container is full with text and/or images. I also want to delete if it is empty. Can you help me event that will be useful to make these two

  Thank you

  Hello Raja

  You must do the following

  Add

  If (textFlow.flowComposer.getControllerAt(textFlow.flowComposer.numControllers-1).calculateH eight() > textFlow.flowComposer.getControllerAt(textFlow.flowComposer.numControllers-1).comp ositionHeight) {}

  create the next controller

  }

  To remove

  {If (textFlow.flowComposer.getControllerAt(textFlow.flowComposer.numControllers-1).calculateH {eight () == 0)}

  remove the last empty container
  }

• Is it necessary to remove the password (protection) whenever I want to access a 1007 shared hp printer.

  I have a printer that is connected to a Win7 machine and shared with other twelve Win7 machines. One of these twelve machines is password protected. When I want to access my printer of this password protected machine is showing offline... But when I remove the password it shows online and prints if given command... Is it possible to access my printer without removing my password... Thank you.

  Hello
   
  Thank you for the update.
   
  Let us know if you need help with Windows related issues. We will be happy to help you.

• Completely remove the photo referenced

  Hello

  I try to use a large library referenced in Photos Apple. I have these all outdoor photos because they are needed both by Adobe Lightroom. I discovered if I delete a photo inside the Photos from Apple, which is not really delete. There is simply no more referenced. How can I delete a Photo inside the Photos from Apple to have to remove it completely on my computer?

  Best regards

  Kugelschreiber01

  You can no - one (of the very minor) reasons that references libraries are not recommended with Photos - deletion is a two step process (whatever)

  And what you do is going to be a total disaster, because you can not move or modify the original photos there somehow without causing problems for the pictures - there is no way to share the same pictures between LR and Photos - you must have two copies, one in the photo library and a totally separate for use by LR

  LN

• Necessary to remove the my computer windows family safety staff windows 7...

  Not the most confident person when it comes to computer skills! Searched through my uninstall, but do not know if I will delete everything related to windows in the process. In addition, is a second hand computer, is an ID of foreigners who don't always appear at the same time very random and little practice! THANKS FOR THE HELP - IF ALL GOES WELL

  Hi Ilisalassen,

  Welcome to the Microsoft community. Let me make sure I understand. You want to remove parental controls on your computer. Is this correct? If so, you can uninstall the parental control by following the instructions in the solution below article:

  How can I remove parental control?

  Good luck and let me know how it turns out for you.

  Regarding the foreign ID that continues to appear at random, we ask that you provide us with a screenshot showing that foreigners ID so we can have a better overview of the issue. To do this, please follow the instructions in the section below on how to capture a screenshot.

  How to capture a screenshot using Windows Vista or Windows 7, Windows 8?

  Once the le pret loan of the screenshot, please download on the private message area that we have undertaken on your workstation.

  Note: you must be connected to the instance of the Microsoft Community to see the link. Just click on the link "You an answer in private to this message" just above your message to view the message.

  We must also respond to this message if you have already provided information on the private data area. This will help facilitate our actions on your question.

  Thank you.

• How to remove the Babylon since Firefox homepage

  Hi, I have the worst time trying to remove Babylon home page of Firefox, that's what I've tried:

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  I've read all the forums in support of mozilla, but nothing seems to work, I can't just get rid of it and it is quite annoying.
  There is nothing in the Babylon web page that helped me.

  You have other ideas to completely remove this annoying problem?

  I had this problem as well.
  It is necessary to remove the "manager of browser.

  See this page:
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  Just remove the subkey "browser Manager" registry of records:

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• (Find and) removing the virtual copies

  Hello.

  I managed to create virtual copies of 1000 or more photos. This happened (I think) while trying to clean a file in the collection. What I want to do now, so to sort - and isolate? -virtual copies created accidentally. I tried to use Copies of filter/Virtual Library and sorting during editing, but it still seems that it will take time to find those that have been made virtual copies by intention and those who were not. As I also did a lot of editing work before this accident, I would rather not return a previous backup.

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  Thanks in advance,

  OLE k

  While you can order by order added, I don't see anything to display. I said descending because then the accidental should be the first to that see you.

  I think I may have confused things by saying smart collection / contains / whatever. The only goal was to find all virtual copies, so we could then see those accidental. We cannot do this by file Type, but we can do it by searching for a letter, for example 'o', which we know will be in the copy name field.

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• Satellite R630-14 days-how do I remove the keyboard?

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  I bought a Toshiba Satellite R630-14 days, and I would remove keyboard to clean.
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  > I would like to remove from the keyboard to clean.
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  < environment >

  -VMWare vSphere 5 ESXi
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  the message will disappear as soon as snapshots are consolidated.  There is no way to remove the message otherwise.  Just think of it as a reminder that the snapshots should be engaged.

• How can I remove the asterisk '' necessary '' to selectOneRadio

  Using JDeveloper 11.1.1.4.0
  
  How can I remove the asterisk '' necessary '' to a component of selectOneRadio? I set showRequired to false, as shown below, and yet the asterisk has not changed. Y at - it somewhere else this parameter substitution?
  

        <af:selectOneRadio value="#{bindings.CP_Files_LocationVO1.inputValue}"
                           required="#{bindings.CP_Files_LocationVO1.hints.mandatory}"
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  Troy

  Hi Troy,

  Remove the property required of af: selectOneRadio (or set it to false).
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  In your example, it seems that it is related to the attribute of a business component, which I think is mandatory.

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  Ciao
  Aino

• How to remove the unwanted contained in peoplesoft?

  Hi guys,.

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  Yes. It's the delete what I am referring. If you delete the ARB or a record, he would remove it from the database.

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  Is it safe to simply remove the power supply or which perhaps will lead to damage to the file system of the SD card, so a security sudo shutdown - hP now is mandatory?

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  I had suspected as much, but a good reason to stop IP before disconnecting the power supply because it will help prevent the corruption of the file jwc_properties.ini.

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