QML and Qt Quick

@GrecKo thank you very much. This error took a lot of my time.

I would post this in https://lists.qt-project.org/listinfo/interest if I were you.

Not possible.

@GrecKo Thank you for your answer. It works perfectly !

@J-Hilk thank you! I did end up finding an alternative solution. I created a signal on my TableView and wired it to each button. Then, when the ComboBox changes, I call a function on the TableView that fires the signal, triggering the print buttons to reevaluate if they should be enabled or not.

@mirro Did you try verticalLayoutDirection? (cf. https://doc.qt.io/qt-5/qml-qtquick-listview.html#verticalLayoutDirection-prop)

if theres 2 console， then remember to delete 'return a.exec', 'system pause'

Ok. At the end, I found a solution. I want to share this solution with you. struct channelStr { Q_GADGET Q_PROPERTY(QString Text MEMBER Text) ... Q_PROPERTY(int data MEMBER data) public: QString Text; ... int data; }; Q_DECLARE_METATYPE(channelStr ) struct myStructData { Q_GADGET Q_PROPERTY(QString exampleMyVersion MEMBER exampleMyVersion ) ... Q_PROPERTY(int exampleMyData MEMBER exampleMyData ) public: channelStr ch[4]; Q_INVOKABLE QVariant getCh( int index ) { return QVariant::fromValue(ch[index]); } QString exampleMyVersion; ... int exampleMyData }; Q_DECLARE_METATYPE(myStructData ) I'm still coding and testing it, but at the moment seems to work well. Does anyone see any problem in this way? Thank in advance CP71

@qcoderpro said in A couple Qt various questions: If that method returning a value is not mentioned in Q_PROPERTY, we simply define it in the public slots and it returns the value without a Q_INVOKABLE. Yes you can use public slots if you want, my personnal preferrence is to use Q_INVOKABLE for methods which I want to be accessible from QML. I found this more readable.

I need to use Qt.labs.platform, rather QtQuick.Dialogs module because former contains MessageDialog and FileDialog both but latter is not. So I removeed "import QtQuick.Dialogs" above code. However, FileDialog from Qt.labs.platform does not contain "selectedFile" property, so I switch it to "currentFile" and it works.

You're right. Thanks for answering. I finally ended with a QImageProvider. My image provider takes a filename followed by a question mark and a color (image://myimageprovider/myicon.svg?red). I can then colorize my svg file (this is why i needed a new Image() ) from my image provider. This is the qml part. import QtQuick 2.11 Canvas { width: 200 height: 200 property string imageUrl: "image://myimageprovider/myicon.svg?red" Component.onCompleted: loadImage(imageUrl) onImageLoaded: requestPaint(); onPaint: { var ctx = getContext("2d"); ctx.drawImage(imageUrl, 0, 0, 32, 32); } }

@dheerendra thsnls for your reponse. But how do I get the onChanged of param to run the if statements? Thanks

@Montanaro said in Why it doesnt emit ?: I tryed to change "unsolved tag" into "solved tag but" but I m not able :/ bottom right, topic tools -> mark as solved