[RESOLVED] connect QObject signal cascades element

Similar Questions

• Connect the signal to the PRC to slot QML

  Hi guys.,.

  Please help me with this

  I'm issuing a custom signal called imageLoaded of CPP that contains an image as a parameter. How can I connect this signal to a slot in QML and can access the image...?

  Thanks in advance...

  For example:

  import bb.cascades 1.0
  
  Page {
      id: myPage
      Container {
          layout: DockLayout {}
          Label {
              id: myLabel
              text: qsTr("Hello World")
              textStyle.base: SystemDefaults.TextStyles.BigText
              verticalAlignment: VerticalAlignment.Center
              horizontalAlignment: HorizontalAlignment.Center
          }
          Button {
              text: "Press me"
              onClicked: {
                  console.log("Boton clicked");
                  cppObject.imageLoaded.connect(onImageLoaded);
                  cppObject.executeCppFunction();
              }
  
          }
      }
  
      function onImageLoaded(message) {
          console.log("enter to slot in qml");
          myLabel.text = message;
      }
  }
  
  --------------------
  
  #ifndef ApplicationUI_HPP_
  #define ApplicationUI_HPP_
  
  #include 
  
  namespace bb { namespace cascades { class Application; }}
  
  class ApplicationUI : public QObject
  {
      Q_OBJECT
  public:
      ApplicationUI(bb::cascades::Application *app);
      virtual ~ApplicationUI() {}
  
      Q_INVOKABLE void executeCppFunction();
  
  signals:
      void imageLoaded(QString message);
  };
  
  #endif 
  
  #include "applicationui.hpp"
  
  #include 
  #include 
  #include 
  
  using namespace bb::cascades;
  
  ApplicationUI::ApplicationUI(bb::cascades::Application *app)
  : QObject(app)
  {
      QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);
  
      QmlDocument::defaultDeclarativeEngine()->rootContext()->setContextProperty("cppObject", this);
  
      AbstractPane *root = qml->createRootObject();
      app->setScene(root);
  
  }
  
  void ApplicationUI::executeCppFunction() {
      emit imageLoaded("Hello from C++ Signal");
  }
  

• Connection of signals ContactPicker

  Hello

  I can not connect the signal to a ContactPicker. Here is my code:

    ContactPicker *contactPicker = new ContactPicker();
    contactPicker->setMode(ContactSelectionMode::Multiple);
  
    bool success = QObject::connect(contactPicker,
         SIGNAL(contactsSelected(QList &)),
         this,
         SLOT(onContactsSelected(QList &)));
  
    if (success) { // Signal was successfully connected.
      contactPicker->open();
    } else { // Failed to connect to signal.
      alert(tr("Didn't connect the picker signal"));
    }
  

  I had similar problems when connecting the signal of a SystemPrompt, but I solved it by adding all the dependencies (in silence) in the hard drive file: I found an example of work and I saw everything what needs to be included. But for the ContactPicker, I can't find an example of work. Any help? Very much appreciated.

  Thank you.

  Hello

  const and & can be omitted, but they are not equal to a non-const reference.

  The following should work:

  Definition of slot:

  void onContactsSelected(const QList &contactIds);
  

  Connection:

  QObject::connect(picker, SIGNAL(contactsSelected(QList)),
               this, SLOT(onContactsSelected(QList)));
  

• connect multiple signals card NI USB-6341

  Hallo,

  I'm trying to connect the signals of several NI USB-6341 map.

  This map has 16 channels but not 32 pins available.

  for example if I want to connect a signal on channel 0 I connect to pins 1 and 2 and for channel 8, I have to connect to channels 2 and 3.

  If I connect only channels 0-7, it works but if I connect channel 8 I do not get the real value of this signal.

  any ideas?

  Thank you

  Theodore

  Theodore,

  This sounds like it should work.  Basically, you use AI0-3 and AI8 - 11 for your four differential signals.  This leaves you AI4 - 7 and AI12-15 free for single operation is complete.  The configuration of the terminal can be defined on each channel.  To do this, you can use DAQmx create channel several times to add channels with a different configuration to your task.  If you need details on it, let me know what environment you'll be programming, and I'll see if I can provide more specific assistance.

  Hope that helps,

  Dan

• Connection of signals (with parameter) in QML.

  Hello

  I want to connect a signal (with parameter) in QML. I have the signal of my PPC and I am able to do that in QML, when I use signals that has no parameters.

  I want to connect to signals which takes the parameter.

  app.mySignal.connect (button.doSomething);

  I do not mySignal() issue, works very well.

  Want to do something like issue mySignal (int) and acess as QML in

  -Thank you

  your signal is:

  mysignal (QString)

  then connect to a function like that (qml)

  myClass.mysignal.connect (onmysignal)

  and:

  function onmysignal (mystring) {}

  Console.log ("my string is:" + mystring)

  }

  If you have several settings, you must be careful with the order and better to use descriptive names, as there is no type in the function definition.

• Connection of signals in C++ with slot in QML

  In my app.cpp class

  (1) I said a signal named 'activityStopSignal '.

  (2) in this class that I charge a qml file

  Here's my class c ++

  #ifndef ApplicationUI_HPP_
  #define ApplicationUI_HPP_
  #include 
  #include
  #include 
  
  #include 
  #include 
  #include 
  
  using namespace bb::data;
  using namespace bb::cascades;
  
  namespace bb
      {
          namespace cascades
              {
                  class Application;
                  class SqlConnection;
                  class ListView;
              }
      }
  
  class ApplicationUI : public QObject
  {
      Q_OBJECT
  public:
      ApplicationUI(bb::cascades::Application *app);
      virtual ~ApplicationUI() {}
  
     signals :
          void activityStopSignal(); ///here I have defined the signal
  
  private slots:
     void replyFinished(QNetworkReply* netReply);
  
  private:
      void Initialise();
      bb::data::SqlConnection* m_sqlConnection;
      bb::cascades::AbstractPane *rootLoginEng;
  };
  
  #endif /* ApplicationUI_HPP_ */
  

  In this qml file

  (1) I set the location for the signal "activityStopSignal".

  (2) I gave the link with the signal and slot

  Here is my qml file

  import bb.cascades 1.0
  
  Page {
      Container {
          layout: DockLayout {
  
          }
  
          Container {
              layout: DockLayout {
  
              }
              ImageView {
                  imageSource: "asset:///images/logo.png"
              }
          }
          ActivityIndicator {
              id: activity
          }
  
      }
  
      onCreationCompleted:
      {
          activity.start();
          _myClass.activityStopSignal.connect(activityDone) //here i have given the connection to the signal
  
      }
  
      function activityDone() {
          activity.stop();
          _myClass.loadHomePage();
      }
  
  }
  

  Now my problem is:

  When I try to call 'make activityStopSignal' the application crashes. Where Iam wrong please help me

  Here is the app.cpp file where Ian trying to broadcast the signal

  // Default empty project template
  #include "applicationui.hpp"
  #include 
  #include 
  #include 
  #include 
  
  using namespace bb::cascades;
  using namespace bb::system;
  using namespace bb::data;
  
  ApplicationUI::ApplicationUI(bb::cascades::Application *app)
  : QObject(app)
  {
        Initialise();
        QmlDocument *qml = QmlDocument::create("asset:///splashScreen.qml").parent(this);
        qml->setContextProperty("_myClass", this);
        AbstractPane *root = qml->createRootObject();
        app->setScene(root);
  
        postJsonRequests();
        emit activityStopSignal(); //here I emit the signal
  }
  

  Someone help me please

  the connection of the signal seems ok, I would say you delete the code in your function and use a simple console.log to see if she is called correctly.

  If you want to process the request json first before emitting the signal you should check your code, networking is async your postJsonRequest will probably return before the end of networking.

• No 2nd router Wireless signal cascade

  I have a wrt160n my main router cascading to one e1200 to the other end of my house. The idea was to improve wireless signal here. Has passed through a long discussion with Cisco support settnig system upward.

  IP address of the e1200 occupies more than 5 outside main router, dhcp is disabled. Connection bewtween routers is Wan to Wan.

  I wired the e1200 but no signal wireless signal. Any ideas?

  You mentioned that there is a WAN - WAN connection. Is your E1200 a version 2 router? If the wireline work, the wireless should work as well. Were you able to configure the settings of you before Wireless 2 routers cascade? Did you use the same network names? If you have done so, turn off the WRT160N and leave the E1200 power and see if it is broadcasting. Otherwise, you will need to access the router's interface again and adjust the wireless channels.

• How to connect the signal of C++ with slot QML?

  {Of connections

  target: Foo //object in c ++ side

  onMySignal: {/ / slot in qml side}

  ......

  }

  }

  It can connect mySignal of Foo in C++ with slot onMySignal in QML.

  Is there some replacement for above cascading?

  Please use the forum search before posting new questions.  In this case you would probably find this thread, at least: http://supportforums.blackberry.com/t5/Cascades-Development/QML-Connections-Element/m-p/1787071#M664

• Tecra Z50-A-14 t - bad connection WiFi signal

  In short.

  Absolutely the same problem with my new Tecra.
  Stable connection by cable.

  Bad connection same 3 5 meters from the router. If the distance is longer, or I use the laptop in another room sometimes it s no link at all.
  The card is Intel (R) Dual Band Wireless AC-3160 and that article how I found the link above.

  All electronic in the work of the House with no problem, but this piece of garbage to Wi - Fi only the same has even after 3 visits in the repair shop. And that s for new out of the box laptop.

  I really disappointed me.

  + The message was edited: link has been removed - forum rules +.

  Hmm. have you noticed the same problem of weak signal using the laptop to the power of the battery as well as connected to the adapter?

  My signal low similar knowledge questions may seem due BOF WiFi enabled power saving settings. This setting can be found in the current power plant? Advanced settings

  On the other hand, it might be possible that there is something wrong with the WiFi antenna cable. Maybe it is not properly connected to the mini PCI module

  In the case of changing the settings would not help you and if your already updated the Wlan to the latest version available, I think that the Toshiba certified maintainer should check the antenna.

• How to connect external contributions in elements of cluster?

  Hi all

  I have a Subvi have an embeded cluster

  

  I want to control the item "enable" from the outside, but I can't wire the input on the element enable icron Terminal. So, how can I control the individual element of a bunch of outside?

  Hi dragondriver,

  You can use bundle based on the name, you can consult the help for bundle "name", use what you need only connect the control to be edited accordingly.

• HDMI connection, no signal from the laptop to the TV in Vista

  I was watch videos from my laptop to my tv via the hdmi connection.  I made no changes to any settings on my laptop, but now there is no signal output of my catch hdmi to computers.  That's happened?

  Try this:

  Restore point:

  http://www.howtogeek.com/HOWTO/Windows-Vista/using-Windows-Vista-system-restore/

  Do Safe Mode system restore, if it is impossible to do in Normal Mode.

  Try typing F8 at startup and in the list of Boot selections, select Mode safe using ARROW top to go there > and then press ENTER.

  Try a restore of the system once, to choose a Restore Point prior to your problem...

  Click Start > programs > Accessories > system tools > system restore > choose another time > next > etc.

  http://www.windowsvistauserguide.com/system_restore.htm

  Read the above for a very good graph shows how backward more than 5 days in the System Restore Points by checking the correct box.

  See you soon.

  Mick Murphy - Microsoft partner

• HP 15-P287SA: I can change the map without wire in a 15-P287SA HP so I can connect a signal to 5G

  I recently bought a HP 15-P287SA and does not check in the store if he can realize my router 5G wireless.

  I realize now the standard construction cannot connect to 5G, so can I change the WiFi card so I can connect to a signal of 5G?

  If so, is there an authorized HP card and driver that you could recommend?

  Hello:

  Unfortunately, according to the service manual, it is very difficult to get to the card your laptop wireless and it must be performed by an authorized service center or the warranty will be voided.  See Chapter 6 for R & R procedures.

  http://h10032.www1.HP.com/CTG/manual/c04511833

  If you are good to dismantle complex things and interested in the question of the guarantee, then the cards only dual band who will work in your model would be one of the broadcom dual band Wireless N or AC cards.  Note: You must have router AC for AC see card Group 5.0 GHz.

  You must also make sure that there are two antennas wireless connected to the current map to be updated.

  Suggested replacements...

  Broadcom BCM943228HMB 802.11abgn 2 × 2 Wi - Fi adapter, card Broadcom Bluetooth 4.0

  The AC map would be this...

  BCM94352HMB/BCM94352 Broadcom 802.11/ac/867Mbps WLAN + BT4.0 Half Mini PCI - E Card

• Connect the signal in the C++ QML?

  Hello

  Sorry in advance for this noobish question

  My QML, I'd like to call C++ function to call the camera and then on the saved photo, I would like to save the url for further processing.

  The invocation and the seizure of the URL does not work correctly.

  The problem is that I can't send a signal of C++ to QML to send the url to QML for further processing.

  Trigger from QML:
  
  Button {
     text: "Snapshot"
     onClicked: {
      app.invokeCamera();
     }
  }
  
  void App::invokeCamera() {
      InvokeRequest request;
      request.setTarget("sys.camera.card");
      request.setAction("bb.action.CAPTURE");
      QByteArray data;
      data.append("full");
      request.setData(getShareRecipeData());
      mInvokeManager->invoke(request);
  }
  
  void App::childCardDone(
          const bb::system::CardDoneMessage &doneMessage) {
      QString url = "";
      qDebug() << "childCardDone reason:" << doneMessage.reason();
      qDebug() << "childCardDone data:" << doneMessage.data();
  
      if (doneMessage.reason().compare("save") == 0) {
          url = "file://" + doneMessage.data();
      } else if (doneMessage.reason().compare("save") == 0) {
          showError(doneMessage.data());
      }
  // This doesn't seem to send to QML
      emit cameraCaptureCompleted(url);
  }
  
  In C++:
  
  signals:
      void cameraCaptureCompleted(const QString &url);
  

  QML to signal received (somehow this must be duplicated?)

  signal cameraCaptureCompleted (string imageLink)
  onCameraCaptureCompleted: {}
  Console.Debug ("link to the image:" + imageLink);

  }

  The onCameraCaptureCompleted never triggered. The console.debug ("link to the image:" + imageLink); did not show anything.

  Thanks for your help!

  OK, I went back and looked at your provided code again and I see you try to put your location of onCameraCaptureCompleted on the Page, which certainly won't work, since the Page is not the class that has the cameraCaptureCompleted signal. I suggest one of these three approaches:

  Page {   id: myPage
     attachedObjects: [
        App {
           id: myApp
           onCameraCaptureCompleted: {
              // ---Do your stuff
           }
        }
     }
  }
  

  ... or if you prefer the Manager to appear on the page do this way:

  Page {
     id: myPage
     attachedObjects: [
        App {
           id: myApp
        }
     }
     function cameraCaptureCompletedHandler( imageLink ) {
        // ---Do your stuff
     }
     onCreationCompleted: {
        myApp.cameraCaptureCompleted.connect(myPage.cameraCaptureCompletedHandler);
     }
  }
  

  If you don't want to mess with connect() you could do the last example that much too:

  Page {
     id: myPage
     attachedObjects: [
        App {
           id: myApp
           onCameraCaptureCompleted: {
              myPage.cameraCaptureCompletedHandler( imageLink );
           }
        }
     }
     function cameraCaptureCompletedHandler( imageLink ) {
        // ---Do your stuff
     }
  }
  

  Of course, all these examples assume that you have successfully exposed the App class to QML with qmlRegisterType(). The signal you want to respond to being on the App class, you must place your location, or connect the App::cameraCaptureCompleted signal to your location explicitly.

  Hope it is clearer to you now.

• Why I can't connect to my Photoshop Elements 10 as I used to?

  I can connect is more my 10 items. The only answer I get is to check my connection error, message 400. I talked to AT & T about this and they say their verdict of liability.

  Hi Numbers12,

  Please see the Ko: http://helpx.adobe.com/photoshop-elements/kb/troubleshoot-sync-issues-photoshop-elements.h tml .

  Kind regards

  Romit Sinha

• On my laptop I have internet connection excellent signal strength, but cannot get in it says validation idnetity

  I have a linksys wireless-B 2.4 GHz card and a linksys wireless router

  I have a linksys wireless-B 2.4 GHz card and a linksys wireless router

  Although it is possible that your problem is related to the 802. 1 x as suggested by Samhrutha G and GTS - NJ, it seems more likely that you have a different question.

  A B of Linksys Wireless card is likely to be quite old and may not be able to connect to a router that uses the current wireless (WPA2) encryption standard.  So, if the suggestions in the other positions did not help, please answer the following questions:

  1 were you STILL able to connect wirelessly to the router using this adapter?  If Yes, did you of recent changes made to the configuration of the router?

  If you have never been able to connect using this card:

  2. What is the model - and version - your PC card adaptor?  Card WPC11 wireless-B, for example, came in versions 1.0, 2.5, 3.0, and 4.0 hardware (look on the back / bottom of the map).

  3. When was the last time that you updated the driver for your wireless card?

  4. What is the model and version of the router Linksys (glance at the bottom)?

  5. what type of encryption you configured in the router (none, WEP, WPA pre-shared Key, WPA2 pre-shared key, something else)?  "Preshared key" can appear as PSK