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PthinKS Private Limited • Developer Knowledge Forum
Dheerendra's Qt Forum Knowledge + PthinKS Q&A
The forum starts with selected Qt Forum questions answered by Dheerendra. Registered users can ask new C++, Qt and QML questions, paste code, and contribute reusable answers.
26Questions
92%Solved rate
1Featured expert
25Answers
Qt Forum Knowledge Imported discussions answered by Dheerendra
DPDheerendra V Purohit • C++ / Qt / QML
Dheerendra's Qt Forum Questions & Answers
Expanded collection of discussions sourced from forum.qt.io where Dheerendra provided an answer.
dheerendra • Qt Forum
How can the font of a QML ComboBox be customized?
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dheerendra • Qt Forum
What is the practical way to move an existing Qt Widgets UI to Qt Quick/QML?
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dheerendra • Qt Forum
How should application settings be exposed from C++ to QML?
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dheerendra • Qt Forum
Why does QML SerialPort readAll() return multiple lines of data?
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dheerendra • Qt Forum
How can QML content be displayed inside a Qt Widgets application?
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dheerendra • Qt Forum
How can a value be passed from main.qml to another QML component?
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dheerendra • Qt Forum
Why does Qt.createComponent() fail when loading a local QML file?
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dheerendra • Qt Forum
Why does changing a QML property from C++ fail?
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dheerendra • Qt Forum
Can Qt Quick modules be used without writing QML?
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dheerendra • Qt Forum
How should data and selection be handled with QListView?
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dheerendra • Qt Forum
Can a Loader inside a ListView delegate be accessed directly from outside?
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dheerendra • Qt Forum
Why does passing a QObject-derived object by value fail?
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dheerendra • Qt Forum
Why is a C++ class reported as undefined in QML?
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dheerendra • Qt Forum
How can a C++ function be called from QML?
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dheerendra • Qt Forum
How should table-style CAN data be presented in a QML ListView?
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dheerendra • Qt Forum
Should a ListView use a horizontal ScrollBar for long delegate text?
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Qt Framework
QtQt Core, Widgets, model/view, signals & slots, networking, threads, CMake and migration.
Engineering questionsQt
QML / Qt Quick
QMLBindings, delegates, layouts, controls, rendering, Qt Quick and C++ integration.
Engineering questionsQML
Dheerendra's Qt Forum questions & community questions
Searchable, reusable C++, Qt and QML engineering knowledge.
0
votes
What are the basic steps for exposing a custom C++ class to QML?
A developer wanted to make a custom C++ class available as a QML extension/type.
✓ Solved
1 answers
0
votes
Where should connections be made when C++ types are instantiated by QML?
Two C++ classes were registered with qmlRegisterType and a developer wanted to connect their signals and slots even though QML created the instances.
✓ Solved
1 answers
0
votes
Is it reasonable to expose many C++ values to QML with Q_PROPERTY?
A developer had data in C++ and wondered whether using many Q_PROPERTY declarations for QML access was an appropriate design.
✓ Solved
1 answers
0
votes
How can a Popup loaded dynamically through Loader be opened?
A developer dynamically loaded a Popup QML component and needed to call its open method.
✓ Solved
1 answers
0
votes
How can a dynamically defined QML object property be read from C++?
A developer wanted C++ to inspect a property created dynamically on a QML-side object.
✓ Solved
1 answers
0
votes
Why can a qmlRegisterType name fail when it begins with a lowercase letter?
A developer registered a C++ type under a lowercase QML type name and saw unexpected behaviour.
✓ Solved
1 answers
0
votes
How can the same constants be shared between C++ and QML?
A developer wanted one definition for many constants used from both C++ and QML.
✓ Solved
1 answers
0
votes
Why is a C++ class reported as undefined in QML?
A developer had a QObject-based C++ class but QML could not see or instantiate it.
✓ Solved
1 answers
0
votes
Why does passing a QObject-derived object by value fail?
A developer passed an object derived from QObject by value to another C++ function and encountered a copy-related compiler error.
✓ Solved
1 answers
0
votes
Can a Loader inside a ListView delegate be accessed directly from outside?
A developer wanted to reach a Loader by id from outside a ListView delegate.
✓ Solved
1 answers
0
votes
How should C++ signals be handled from a context object in QML?
A developer exposed a C++ object to QML and tried to handle its signals using property-style syntax that QML did not accept.
✓ Solved
1 answers
0
votes
Should a ListView use a horizontal ScrollBar for long delegate text?
A developer wanted horizontal scrolling when delegate labels were wider than a QML ListView.
✓ Solved
1 answers
0
votes
How should table-style CAN data be presented in a QML ListView?
A developer had CAN bus data in C++ and wanted to show identifier, length and payload as structured rows in a QML interface.
✓ Solved
1 answers
0
votes
How can a C++ function be called from QML?
A developer asked for the basic approach to make a C++ function available to a QML file.
✓ Solved
1 answers
0
votes
How should data and selection be handled with QListView?
A developer new to Qt wanted to add items to QListView and later retrieve the selected index.
✓ Solved
1 answers
0
votes
Can Qt Quick modules be used without writing QML?
A developer preferred a C++-only approach and asked whether Qt Quick could be used without QML.
✓ Solved
1 answers
0
votes
Why does changing a QML property from C++ fail?
A Qt Forum user attempted to find a QML object from C++ and change its color property, but the change did not occur.
✓ Solved
1 answers
0
votes
Why does Qt.createComponent() fail when loading a local QML file?
A Qt Forum user could create QML components from qrc resources but received a network-style error when trying to load a local file dynamically.
✓ Solved
1 answers
0
votes
How can a value be passed from main.qml to another QML component?
A Qt Forum user had a reusable QML component and wanted to change an exposed value from main.qml.
✓ Solved
1 answers
0
votes
How can QML content be displayed inside a Qt Widgets application?
A Qt Forum user embedded a QML view into a QWidget/QDialog workflow, but the QML content did not appear correctly.
✓ Solved
1 answers
0
votes
Why does QML SerialPort readAll() return multiple lines of data?
A Qt Forum user was receiving several lines of serial data together and wanted to understand how to read a smaller amount or a single line.
✓ Solved
1 answers
0
votes
How should application settings be exposed from C++ to QML?
A Qt Forum discussion asked how to manage application settings so that QML can read and change values while C++ performs persistent storage.
✓ Solved
1 answers
0
votes
What is the practical way to move an existing Qt Widgets UI to Qt Quick/QML?
A Qt Forum user had an existing Qt GUI application and wanted to move its user interface toward Qt Quick/QML without expecting an automatic widget-to-QML conversion.
✓ Solved
1 answers
0
votes
How can the font of a QML ComboBox be customized?
A Qt Forum user wanted to change the font used by a QML ComboBox, including the editable line area and the drop-down appearance.
✓ Solved
1 answers
1
votes
2D to 3D drawing
How to draw from one point to another point
1 answers 1 answers
0
votes
2D to 3D drawing
How to draw from one point to another point
Needs answer
0 answers