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Error Cannot Assign Undefined To Qstring

Does f:x↦2x+3 mean the same thing as f(x)=2x+3? Comment 1 Elias Probst 2014-05-20 09:21:55 UTC Just noticed, this should be actually reported against Milou, but I can't reassign since there's no Milou product yet. @vHanda: That's something for you, You should especially have a look at the ListModel and ListItem classes. namespace Models { class ListModel : public QAbstractListModel { Q_OBJECT Q_PROPERTY(int count READ rowCount NOTIFY countChanged) public: explicit ListModel(ListItem *prototype, QObject *parent = 0); ~ListModel(); // REIMPLEMENTED METHODS int rowCount(const QModelIndex this contact form

If I do it using ListElement and specifying the path statically , it works but if I try to do it using FileDialog.fileUrl.toString() in the onAccepted event, it throws the error Share this:TwitterFacebookLinkedInEmailLike this:Like Loading... Join them; it only takes a minute: Sign up QML unable to assign undefined to qstring up vote 0 down vote favorite I'm trying to append an image to listview dynamically. Email check failed, please try again Sorry, your blog cannot share posts by email. %d bloggers like this:

I've created a simple class:class CustomElement : QObject { Q_OBJECT public: CustomElement(QObject* parent); virtual ~CustomElement(); QString getCode(); QString getName(); void setCode(QString aCode); void setName(QString aName); private: QString code; QString name; };Added The time now is 01:30. -- talk.maemo.org -- Classic Light ---- Classic Dark -- Minimalist Light ---- Minimalist Dark Contact Us - Home - Archive - Top All Content CC Legal If you are looking for information about Qt related issue — register and post your question. The use case of updating a model field directly is something I have not dealt with in this manner before.

Browse other questions tagged qt qml qtquick2 or ask your own question. Qt Centre is a community site devoted to programming in C++ using the Qt framework. Should I allow my child to make an alternate meal if they do not like anything served at mealtime? I'd prefer to avoid QAbstractListModel, as I think it'd be an overkill right there - the elements are like this: Qt Code: Switch view class IrregularVerb : public QObject{ Q_OBJECT Q_PROPERTY(QString

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Reply lemire_p says: January 7, 2014 at 11:34 am To answer the first question, yes you can register a class as a qml type but it must inherits from QObject and Committed on 23/05/2014 at 15:17. However, it does not.

The way I would normally update my model was by calling a C++ Q_INVOKABLE method from QML (of a QObject class instance exposed to the QML context) and passing it my If you want to be able to edit rows of a QAbstractListModel subclass (ListModel in that case), you simply have to overload the method bool QAbstractListModel::setData(const QModelIndex &index, const QVariant &value, Thank you for the snippet. Q_PROPERTY(int count READ rowCount) //...

Thank You. Concerning the second question, you have done most of the work. Bookmark the permalink. Resistance is futile.

Can you prepare a minimal compilable example reproducing the problem? weblink Q_PROPERTY(int elementID READ elementID WRITE setElementID NOTIFY elementIDChanged) Why is this not necessary anymore in your example? It worked. Reply Quote 0 Loading More Posts 3 Posts 3718 Views Reply Reply as topic Log in to reply 1 / 1 current community chat Stack Overflow Meta Stack Overflow your communities

onClicked: { copyText.text = data.teamName } } } } It lets out the error: TypeError: Result of expression 'data.setTeamName' [undefined] is not a function. There the Application throws "Unable to assign [undefined] to QString.." all the time. Kindly suggest Regards, val Reply lemire_p says: March 28, 2016 at 10:01 am I think you are missing a Q_DECLARE_METATYPE(MenuModel) or you should make MenuModel::subMenu return a QObject* to fix the navigate here Please guide.

Getting Started Official BlackBerry Support Register · Connect with Facebook · Sign In · Help CommunityCategoryBoardDeveloper ResourcesUsers turn on suggestions Auto-suggest helps You should just need to have a Q_DECLARE_METATYPE(Models::ListModel*) at the end of the ListModel header to make the conversion to QVariant work. You might want to look at http://qt-project.org/doc/qt-5.0/qtcore/qabstractitemmodel.html for a deeper explaination.

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The usage of "le pays de..." What is a satisfactory result of penetration testing assessment? Find all posts by marmistrz gionni88 2013-02-03 , 10:38 Posts: 435| Thanked: 769 times | Joined on Apr 2010 #3 You need a QAbstractListModel with the following implementations to be able Join them; it only takes a minute: Sign up 'Error: Cannot assign [undefined] to QString' in FolderListModel on Component.onCompleted in QML up vote 0 down vote favorite ScrollView { id: scrollViewHead Probably the relevant part is missing.

Reply lemire_p says: February 14, 2015 at 2:55 pm This is totally true and should be the preferred way of using nested models as this also takes away QML vs C++ setRoleNames is deprecated but could still be used. You can assign this class to the listView's model directly. http://outwardsound.com/error-cannot/error-cannot-assign-operations-into-an-rpc-service-showbusycursor.html Please ask Qt related questions on the forum and not using private messages or visitor messages.

I admit that this is a bit overkill if you just want to edit a field but it is useful when updating a field that also updates other values in related I have updated my sample and implemented thoses features. If you don't want to use Q_Properties, the best option you have is QVariantListDataModel. lemire_p View Full Profile → Recent Tweets Car Dashboard Project wp.me/p3jKl6-5s 2yearsago RT @harleydavidson: Photo of the Day: In the Spotlight. #potd #photooftheday http://t.co/lWMspUhNVw 2yearsago Using a LeapMotion for Qt inputs

The CarModel example was updated to show this behavior, when you click on a car model row, the price of that car is increased. Leave a Reply Cancel reply Enter your comment here... Text{ id: tOut anchors.centerIn: textOut text: "" } } Rectangle{ id: textClick ... Reply lemire_p says: December 14, 2013 at 5:52 pm If I understand what you are trying to do : 1) Let's say your ListModel object was exposed to qml under the

Go to Solution. In the previous version, the ListModel was a read only model, I have updated it so that you can also edit/update values (look at the setData method in ListItem.h and ListModel.cpp). If that is what you want to do, then yes you'll need to add Q_INVOKABLE in front of your method prototype in ListModel.h so that it can be called from Qml.