QML and Qt Quick

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

@fromis_9 said in QML Defines reusable types issue.: Column { anchors.fill: parent HeaderSlider { Layout.fillWidth: true; Layout.fillHeight: true Column is not a layout, so Layout.fillWidth will not work! Use ColumnLayout instead.

I was merely ensuring that I understood your intentions correctly. As @GrecKo wrote, and I would have given the same advice, your detection code should be independent of your UI. Mixing the information you gather with states rather than creating different QML files looks to be a good way to get your application working the way you want.