@Ronak5 no, I didn't. that's probably not the problem any current test is trying to share a bool with QML and the problem is the same. but I'll remember to try it when sharing a string :)

So here is a simpler project and use a Singleton. One of the problem was that I have to declare my object in the QML when using qmlRegisterType. And I don't want to. So here is the new code, the error is the same.
I followed the example of the doc here https://doc.qt.io/qt-5/qtqml-cppintegration-definetypes.html

miniModel.h (the singleton)

#ifndef _MINIMODEL_H_ #define _MINIMODEL_H_ #include <stdlib.h> #include <stdio.h> #include <iostream> #include <string> #include <QtGui/qguiapplication.h> #include <QtQml/qqmlcontext.h> #include <QtQml/qqmlapplicationengine.h> #include <QtCore/qdebug.h> #include <QtCore/qobject.h> #include <QtCore/qvariant.h> class MiniModel : public QObject { Q_OBJECT Q_PROPERTY(bool miniboule READ miniboule WRITE setMiniboule NOTIFY minibouleChanged) public: MiniModel(); bool miniboule(); void setMiniboule(bool bouboule); signals: void minibouleChanged(); private: bool m_miniboule; }; #endif

main.cpp v1 : singleton using a QObject

#include "miniModel.h" //defining a miniModel instance as a singleton static QObject* mp_singleton(QQmlEngine* engine, QJSEngine* scriptEngine) { Q_UNUSED(engine) Q_UNUSED(scriptEngine) MiniModel* miniSingleton = new MiniModel(); return miniSingleton; } int main(int argc=0, char* argv[]=nullptr) { printf("\n launching \n"); QGuiApplication app(argc, argv); qmlRegisterSingletonType<MiniModel>("myModel.miniModel", 1, 0, "MiniModel",mp_singleton); QQmlApplicationEngine engine; engine.addImportPath(QStringLiteral("..\\..\\..\\..\\Tools\\Qt\\5.12.0\\x64\\5.12.0\\msvc2017_64\\qml")); engine.load(QUrl(QStringLiteral("..\\..\\..\\miniModel.qml"))); return app.exec(); }

main.cpp v2 : singletin using QJSValue

#include "miniModel.h" static QJSValue m_singletonModel(QQmlEngine* engine, QJSEngine* scriptEngine) { Q_UNUSED(engine) static bool m_miniboule; QJSValue miniModel = scriptEngine->newObject(); miniModel.setProperty("miniboule", m_miniboule); return miniModel; } int main(int argc = 0, char* argv[] = nullptr) { printf("\n launching \n"); QGuiApplication app(argc, argv); qmlRegisterSingletonType("myModel.miniModel", 1, 0, "MiniModel", m_singletonModel); QQmlApplicationEngine engine; engine.addImportPath(QStringLiteral("..\\..\\..\\..\\Tools\\Qt\\5.12.0\\x64\\5.12.0\\msvc2017_64\\qml")); engine.load(QUrl(QStringLiteral("..\\..\\..\\miniModel.qml"))); return app.exec(); }

and the QML. be careful, it's tough

import QtQuick 2.5 import QtQuick.Window 2.5 import QtQuick.Controls 1.4 import myModel.miniModel 1.0 as MyModel ApplicationWindow { id: root width: 300 height: 480 visible:true Text{ id: textTest x: 62 y: 75 color: "#d21616" text: "vanilla" visible: false//the text is supposed to appear when clicking in the mouseArea } MouseArea{ anchors.fill: parent onClicked: textTest.visible= MyModel.Minimodel.miniboule//the boolean I want to acess, defined to true } }

now, the error changed, since I called MyModel.MiniModel.miniboule instead of just MiniModel.miniboule
the error is TypeError: Cannot read property 'miniboule' of undefined

If you need this for just measuring the performance of your application, maybe you should use the QML Profiler instead http://doc.qt.io/qtcreator/creator-qml-performance-monitor.html

@seyed As I understand things, you need to get hold of the item's transform and do whatever your rendering needs to do with it for it to have effect... see https://stackoverflow.com/questions/28535528/how-can-i-get-transform-matrix-for-qquickitem . (Similarly, nothing will implement the opacity property for you... you have to bring it into your OpenGL code and use it in your fragment shader.)

Use model classes and views instead of such approach. It will save you a lot of tears in the long run.

For a starter, see: https://doc.qt.io/qt-5/qtquick-modelviewsdata-modelview.html

@pra7 Follow these instructions then edit your styles.qml file and comment out line 437

spaceKeyPanel: KeyPanel { Rectangle { id: spaceKeyBackground radius: 5 color: "#35322f" anchors.fill: parent anchors.margins: keyBackgroundMargin Text { id: spaceKeyText //text: Qt.locale(InputContext.locale).nativeLanguageName

@pra7 See also https://forum.qt.io/topic/82700/datepicker-anyone. BTW you must mean Quick Controls 2, not QML2. You also can use Controls 1 elements in Controls 2 application, although the look&feel may be a problem.

I got to know that there is no such API to set Screen orientation in QT for windows and thus I used windows API for locking app Orientation, following is the code :

Just copy paste below code in main.cpp:

#include <Windows.h> typedef enum ORIENTATION_PREFERENCE { ORIENTATION_PREFERENCE_NONE = 0x0, ORIENTATION_PREFERENCE_LANDSCAPE = 0x1, ORIENTATION_PREFERENCE_PORTRAIT = 0x2, ORIENTATION_PREFERENCE_LANDSCAPE_FLIPPED = 0x4, ORIENTATION_PREFERENCE_PORTRAIT_FLIPPED = 0x8 } ORIENTATION_PREFERENCE; typedef BOOL (WINAPI *pSDARP)(ORIENTATION_PREFERENCE orientation); pSDARP pARP; pARP = (pSDARP) GetProcAddress( GetModuleHandle(TEXT("user32.dll")), "SetDisplayAutoRotationPreferences"); if( pARP ){ pARP( (ORIENTATION_PREFERENCE)(ORIENTATION_PREFERENCE_LANDSCAPE | ORIENTATION_PREFERENCE_LANDSCAPE_FLIPPED ) ); }

For more information please refer : Handling Windows Auto-rotate feature in your application Hope it helps others .

@Eeli-K sorry I have read your comment incorrectly :p

@Wieland thanks !!! for the answer.

@raven-worx If I remove the line, the keyboard will never hide and the reason for adding visible: Qt.inputMethod.visible is because of the following line that I found in an example :

/* The visibility of the InputPanel can be bound to the Qt.inputMethod.visible property, but then the handwriting input panel and the keyboard input panel can be visible at the same time. Here the visibility is bound to InputPanel.active property instead, which allows the handwriting panel to control the visibility when necessary. */

Bad luck is that it's nowhere mentioned in any docs.

ClassB, you are using it in a property.

By the way, why not use QObjectList and a Q_INVOKABLE method ? Might be more straightforward.

More information on how to integrate CPP with QML here.

@pra7, @Wieland how can I access a list of Structure inside another Structure.
Eg: From the above example, I need to use

QList<MyNewStructure> m_StructList; How is that possible? I have tried, QList<MyNewStructure> m_StructList; Q_PROPERTY(QList<MyNewStruct> newStr MEMBER m_newStr) but didnt help.

@mrjj I used Intel Driver updater tool, but i didn't get the latest driver for windows 8 (64 bit) .

@LeLev Thanks , I will try the same .

@GrecKo That was it. Thank you very much!

@Eeli-K Thanks for your suggestion and I will give a try.But I found a way to insert an item at the particular index by using repeaters and Object Model inside a layout, For more information can also refer below link:

https://stackoverflow.com/a/43225476/6336374

This got me thinking about how I structure things, which generally results from starting with a small one-file prototype and then breaking bits of it off into different files. Here's an example (all these can be run with qmlscene main.qml):

First you might have

File main.qml

// main.qml import QtQuick 2.7 Rectangle { id: main width: 640 height: 480 property string msg0: "Some text" property string msg1: "Some more text" Column { anchors.centerIn: parent Text {text: main.msg0} Text {text: main.msg1} } }

then you might try and organize stuff a bit:

import QtQuick 2.7 Rectangle { id: main width: 640 height: 480 Item { id: config property string msg0: "Some text" property string msg1: "Some more text" } Column { anchors.centerIn: parent Text {text: config.msg0} Text {text: config.msg1} } }

then you might split that up with a Config.qml:

import QtQuick 2.7 Item { property string msg0: "Some text" property string msg1: "Some more text" }

and main.qml now simplified to:

import QtQuick 2.7 Rectangle { id: main width: 640 height: 480 Config {id: config} Column { anchors.centerIn: parent Text {text: config.msg0} Text {text: config.msg1} } }

and then you start moving out other bits of functionality e.g adding a Messages.qml:

import QtQuick 2.7 Column { anchors.centerIn: parent Text {text: config.msg0} Text {text: config.msg1} }

and main.qml now simplified to:

import QtQuick 2.7 Rectangle { id: main width: 640 height: 480 Config {id: config} Messages {} }

I've never felt any need for singletons in QML code at all. (Having the hosting C++ set some context properties based on environment or command-line-options is the probably the closest I've come).

@Eeli-K Thanks for the suggestion it worked and also there is another approach "Component.CreateObject()" in which we can create and destroy objects dynamically.

Simpler alternative, just a Repeater with a ListModel inside TabBar :

import QtQuick 2.0 import QtQuick.Window 2.2 import QtQuick.Controls 2.0 ApplicationWindow { visible: true width: 640 height: 480 ListModel { id: tabModel } TabBar { Repeater { model: tabModel TabButton { text: model.text + " " + model.index onClicked: tabModel.remove(model.index) } } } Button { anchors.centerIn: parent text:"add" onClicked: tabModel.append({text: "tab"}); } }

EDIT: My bad, I didn't saw @LeLev first answer, it's very similar to mine. But I fell compelled to post it cause there's a lot of over complicated code in the following answers.

@pra7 said in QML SwipeView is covering entire window:

w

That's cool. This solution you came up with is perfect.

@pra7 did you manage to solve it? I am facing the same issue. I cannot apply any stylesheet on a Combobox using QtQuick.Controls 2.2

@while1code That's the problem ,i cannot pass canvas ID outside ie.,in onCurrentIndexChanged function.

Now I achieved the same using signal and slots by adding following code :

Canvas { id: canvas1 anchors.fill: parent width: parent.width height: parent.height onPaint: { styleData.selected ? drawTab(canvas1,"#0C3142") : drawTab(canvas1,"Transparent") } //*** CONNECT TO SIGNAL HERE *** Connections { target: tv onRefresh: canvas1.requestPaint() } ... ... ... onCurrentIndexChanged: { console.log("index changed "+currentIndex) refresh() //emiting refresh signal }

@nwoki Didn't anticipate that :D
Congratulations and Happy Coding :)

You could compile into a single exe. But that requires commercial license.

Most people just combine the exe with Qt dll's.
These can be found here, note that *.d.dll are for debug.
C:\Qt\Qt5.4.1\5.4\mingw491_32\bin For my version at least.

@Valerian I did not do d&d yet. In my idea you should register a signal to be emitted whenever you move mouse in the area of new position and call swap function.
Do you feel something like this?