QML and Qt Quick

Hi, First of all use the Android Getting Started guide from Qt's documentation to the get the versions of the dependency that you should use. Hunting for the latest and greatest at any price won't work for Android as each release of their NDK has a tendency to break the workflow of projects using it. Therefore you should use the guid already linked above. That will give you a development environment that is working.

Hi The issues is most likely a missing DLL. Maybe not for the exe but for one of the other DLLS. If you have mutiple Qt installed, it might also be the reason. it took wrong ones. But you never answered if you use visual studio compielr or mingw.

@SGaist Thank you. I will do it that way.

@KillerSmath So no way to manipulate that text message. Thank you for your answer.

I am seeing a similar error, but I cannot track it down. The error is cropping up in a private qml file: "Could not convert argument 2 at" "expression for index@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/Private/TreeViewItemDelegateLoader.qml:84" "Passing incompatible arguments to C++ functions from JavaScript is dangerous and deprecated." Is there a way to get a better stacktrace of this? Edit: Somehow I got a better trace: "Could not convert argument 2 at" "expression for index@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/Private/TreeViewItemDelegateLoader.qml:84" "insertColumn@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/Private/BasicTableView.qml:262" "addColumn@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/Private/BasicTableView.qml:236" "expression for onCompleted@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/Private/BasicTableView.qml:358" "__loadElement@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/StackView.qml:825" "__performTransition@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/StackView.qml:911" "push@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/StackView.qml:605" "expression for onLoginComplete@qrc:/startup.qml:96" "onAccepted@qrc:/Login.qml:209" "expression for onAccepted@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/TextField.qml:668" "Passing incompatible arguments to C++ functions from JavaScript is dangerous and deprecated." "This will throw a JavaScript TypeError in future releases of Qt!" The call that starts this: startup_stack.push({item: main_view, replace : true}); startup_stack is a StackView main_view is a Component with custom objects defined inside it I don't see a second argument here. Edit: Here is the offending line from the delegate file: readonly property var index: model ? model["_q_TreeView_ModelIndex"] : __treeModel.index(-1,-1,null) The error shows: expression for index@file:///opt/Qt/5.12.2/gcc_64/qml/QtQuick/Controls/Private/TreeViewItemDelegateLoader.qml:84 Well the second parameter is a constant provided by the Qt qml file. Does this mean we have a problem with a custom index somewhere? Or is Qt complaining about itself?

Hello @zhangXianxiang and welcome to Qt Forum. Firstly, can you define it better? I suggest you to read the QtQuickControl2 Style documentation, it will explain how you can change the Style of your application. QtQuickControl2 - Using Styles Note: In this method, it's only changable before the qml file is loaded. If you are trying to change the style in runtime. Check out this StackOverflow Post: https://stackoverflow.com/questions/44951317/qml-qtquickcontrols2-change-style-properties-at-runtime

Hi and welcome to devnet, .qrc files are not loaded, they are processed so that the files linked in it are built in your application. So there's nothing special you have to do except referencing them properly in your .pro file.

@KroMignon Yeah, right. I didn't see that close curly bracket! :) anchors.centerIn: parent } <= This Button { id: myButton

@J.Hilk said in How can I draw an image into TextArea without HTML?: @raven-worx I didn‘t know there were classes one isn‘t supposed to modfy, look at that... Since this is in qml, you could simply add an Image element on top of your textarea, it will require a good amount of micro managment, aligning, show not to show logic etc. but should be possible. I'm now drawing image on top of textarea,but the performance is very bad(will cause the textedit blink). My solution is to draw image on QImage and then create an texturenode add into TextNode.but draw QImage is low performance,is a way can draw image to the texture directly by opengl?

You have QQuickWidget that you can use to have a QtQuick interface in a widget application. However, I don't think it will solve your problem. From your code, I don't understand the use of QWidget for just the background of your GUI. Why not go full QtQuick ?

@Backflip9 I've never used the graphical Designer, but if you set the Quick Controls style to Material, you'll get widgets that look like native Android ones.

@zhannum not that i am aware of https://doc.qt.io/qt-5/qtgui-qdocconf.html but i think its not really necessary, also its not documented it seems.

@lynettar-0 great 👍 something like that happens to everyone, we don‘t like to admit it however ;) don‘t forget to set the topic to solved

hi @KroMignon thak you very much for the quick answer

@SGaist No I don't. The QSoundEffect documentation states exactly that it can play uncompressed audio format to achieve low latency. I meant for soundEffect. Thanks for your answer.

@divaindie Google: qml gridview spacing On this forum, although old doubtless still works: https://forum.qt.io/topic/19775/solved-qml-gridview-and-spacing-between-children Or: https://stackoverflow.com/questions/37313843/how-to-create-spacing-in-gridview cellWidth/Height: https://doc.qt.io/qt-5/qml-qtquick-gridview.html#cellWidth-prop, https://doc.qt.io/qt-5/qml-qtquick-gridview.html#cellHeight-prop

@J.Hilk Yes thank you again! i was reading this also : https://doc.qt.io/qt-5/qtqml-cppintegration-definetypes.html#receiving-notifications-for-object-initialization

i have raised a bug for this in Qt bug reporting system, https://bugreports.qt.io/browse/QTBUG-75196

I edited my Makefile , included the install folder path like this : INCPATH = -I/root/.emscripten_ports/openssl/include -I/usr/local/Qt-5.12.2/mkspecs/wasm-emscripten -I/usr/local/Qt-5.12.2/include/QtQuickControls2 -I/usr/local/Qt-5.12.2/include/QtQml -I/usr/local/Qt-5.12.2/include/QtNetwork -I../qt/src/qt-everywhere-src-5.12.2/qtbase/include -I /home/izza/QcCore -I../qt/src/qt-everywhere-src-5.12.2/qtbase/include/QtGui -I../qt/src/build/qtbase/include -I../qt/src/build/qtbase/include/QtGui or else if someone is putting directly from bash ypu need to add the following -lQt5Qml -lQt5QuickControls2 -lQt5Network -lQt5Gui etc .. whatever modules are missing. and error isnow resolved.