I built a full dealership management system in QtQuick. here's the UI

https://redd.it/1rrso19
@qt_reddit

Qt World Summit 2026: Going Virtual

I’m honestly a bit confused about the decision regarding the Qt Summit.

I attended the summit last year and had a really great time. The talks were interesting, the atmosphere was great, and it was also a nice opportunity to meet other Qt developers in person and exchange ideas. Because of that, I was really looking forward to the next one.

As far as I remember, the next Qt Summit had already been announced to take place in Berlin, which sounded great. So it was surprising to suddenly see the change and that the event is moving away from being an in-person summit.

Of course there might be reasons behind the scenes that I’m not aware of, but from the outside the decision feels quite sudden and a bit hard to understand. The in-person aspect was a big part of what made the summit special for me.

It’s honestly a bit disappointing, because I was really looking forward to attending again.

https://redd.it/1rrsknu
@qt_reddit

PR on QtChart not getting attention?

Hi,
I found a bug and fixed it in QtChart with this PR, it seems to get no attention at all.

Is there something I should do? I know QtCharts is planned to be replaced by QTGraph eventually

https://redd.it/1ry2az9
@qt_reddit

Building an open-source market microstructure terminal (C++/Qt/GPU heatmap) & looking for feedback from people

Hello all, longtime lurker.

For the past several months I've been building a personal side project called Sentinel, which is an open source trading / market microstructure and order flow terminal. I use Coinbase right now, but could extend if needed. They currently do not require an api key for the data used which is great.

https://preview.redd.it/12k6h78x65pg1.png?width=1920&format=png&auto=webp&s=757f41b68627a496cef5179aa7fb3d86b2903b3b

The main view is a GPU heatmap. I use TWAP aggregation into dense u8 columns, with a single quad texture, and no per-cell CPU work. The client just renders what the server sends it. The grid is a 8192x8192 (insert joke 67M cell joke) and can stay at 110 FPS while interacting with a fully populated heatmap. I recently finished the MSDF text engine for cell labels so liquidity can be shown while maintaining very high frame rates.

There's more than just a heatmap though:

* DOM / price ladder
* TPO / footprint (in progress)
* Stock candle chart with SEC Form 4 insider transaction overlays
* From scratch EDGAR file parser with db
* TradingView screener integration (stocks/crypto, indicator values, etc.)
* SEC File Viewer
* Paper trading with hotkeys, server-side execution, backtesting engine with AvendellaMM algo for testing
* Full widget/docking system with layout persistence
* and more

The stack is C++20, Qt6, Qt Rhi, Boost.Beast for Websockets. Client-server split with headless server for ingestion and aggregation, Qt client for rendering. The core is entirely C++ and client is the only thing that contains Qt code.

The paper trading, replay and backtesting engine are being worked on in another branch but almost done. It will support one abstract simulation layer with pluggable strategies backtested against a real order book and tick feed as well as live paper trading (real $ sooner or later), everything displayed on the heatmap plot.

Lots of technicals I left out for the post, but if you'd like to know more please ask. I spent a lot of time working on this and really like where it's at. :)

Lmk what you guys think, you can check it out here: [https://github.com/pattty847/Sentinel](https://github.com/pattty847/Sentinel)

Here's a video showing off some features, a lot of the insider tsx overlays, but includes the screener and watch lists as well.

https://reddit.com/link/1rxur1o/video/w50anspt15pg1/player

[MSDF showcase](https://reddit.com/link/1rxur1o/video/7e2hvigk55pg1/player)

[AvendellaMM Paper Trading \(in progress\)](https://reddit.com/link/1rxur1o/video/afwl7mnb65pg1/player)

https://redd.it/1rxur1o
@qt_reddit

Qt 6.10 WebEngineWidgets not found by CMake even though config file exists (MSVC2022 64bit)

https://preview.redd.it/bm8f2ggktspg1.png?width=1919&format=png&auto=webp&s=ecf8286ec2e3b25bc1c085080ec53d0461796fd0



https://preview.redd.it/gcjo73nutspg1.png?width=1919&format=png&auto=webp&s=991e2eb3c1043fab9da5def4c87a2317681399bc



Hi everyone,



I'm having an issue with Qt 6.10.2 on Windows 11 using Visual Studio 2022.



I installed QtWebEngine through the Maintenance Tool (under Extensions →

Qt WebEngine → Qt 6.10.2 → MSVC 2022 x64). The installation completed

successfully and the config file clearly exists at:



C:/Qt/6.10.2/msvc2022_64/lib/cmake/Qt6WebEngineWidgets/Qt6WebEngineWidgetsConfig.cmake



But CMake still fails with:



"Failed to find required Qt component WebEngineWidgets.

Expected Config file at [...\] exists"



I tried:

\- Deleting the build folder and re-running CMake

\- Setting CMAKE_PREFIX_PATH to C:/Qt/6.10.2/msvc2022_64

\- Setting QT_ADDITIONAL_PACKAGES_PREFIX_PATH

\- Re-detect in Qt Versions

\- Reinstalling the WebEngine module



Nothing works. The file EXISTS but Qt6_FOUND is set to FALSE anyway.



Is this a known bug with the new Extensions system in Qt 6.8+?

Has anyone found a working solution?



Qt version: 6.10.2

OS: Windows 11

Compiler: MSVC 2022 (amd64)

IDE: Qt Creator 17



https://redd.it/1rx2t31
@qt_reddit

LLMCore 0.1.0 — A Qt/C++ library for integrating LLM into desktop applications

I was developing QodeAssist (an AI-powered programming assistant for Qt Creator), and along the way, I realized something: integrating LLM into C++/Qt applications is much more difficult than it should be. And this obstacle matters—the easier it is to integrate LLM, the more Qt developers will experiment with it. And some of these experiments can truly change the way users interact with applications. Not just desktop applications, but any Qt applications!

Therefore, I separated the LLM layer from QodeAssist into a separate library: LLMCore.

**What it does:**

* Streaming API (Anthropic, OpenAI Compatible (Chat and Responses API), Google AI, Ollama, llama.cpp)
* Tool calling with async execution — define a tool once, it works with every provider
* Thinking/reasoning (Claude, Gemini, etc.)
* Callbacks or signals/slots — your pick
* Full payload control when you need provider-specific tweaks

link: [https://github.com/Palm1r/llmcore](https://github.com/Palm1r/llmcore)

https://redd.it/1ruvyxz
@qt_reddit

I made my first Quickshell/QML program today
https://redd.it/1ruzyzv
@qt_reddit

iPhotron v4.3.1 released: Linux alpha, native RAW support, improved cropping

# What My Project Does

iPhotron helps users organize and browse local photo libraries while keeping files in normal folders. It supports features like GPU-accelerated browsing, HEIC/MOV Live Photos, map view, and non-destructive management.

What’s new in v4.3.1:

Linux version enters alpha testing
Native RAW image support
Crop tool now supports aspect ratio constraints
Fullscreen fixes and other bug fixes

GitHub: OliverZhaohaibin/iPhotron-LocalPhotoAlbumManager: A macOS Photos–style photo manager for Windows — folder-native, non-destructive, with HEIC/MOV Live Photo, map view, and GPU-accelerated browsing.

# Target Audience

This project is for photographers and users who want a desktop-first, local photo workflow instead of a cloud-based one. It is meant as a real usable application, not just a toy project, although the Linux version is still in alpha and needs testing.

# Comparison

Compared with other photo managers, iPhotron focuses on combining a Mac Photos-like browsing experience with folder-native file management and a non-destructive workflow. Many alternatives are either more professional/complex, or they depend on closed library structures. iPhotron aims to be a simpler local-first option while still supporting modern formats like RAW, HEIC, and Live Photos.

I’d especially love feedback from Linux users and photographers working with RAW workflows. If you try it, I’d really appreciate hearing what works, what doesn’t, and what you’d like to see next.

https://redd.it/1ruixxk
@qt_reddit

Working on different animations for buttons in my Qt application. If You guys know some cool ideas for animations I would appreciate if You share them

https://redd.it/1rtprh4
@qt_reddit

Qt 6.11 Released!
https://www.qt.io/blog/qt-6.11-released

https://redd.it/1s1d8ph
@qt_reddit

QT/QML/C++/ESP32I've made a Remote 3D Control System for a Robotic Arm

3D Command Tester

ᵈᵒⁿ'ᵗ ʲᵘᵈᵍᵉ ᵐᵉ ᶠᵒʳ ᵗʰᵉ ᵈᵉˢⁱᵍⁿ ᵒᶠ ᵐʸ ᵃʳᵐ, ⁱ ᵐᵃᵈᵉ ⁱᵗ ⁱⁿ ⁵ ᵐⁱⁿᵘᵗᵉˢ ⁱⁿ ᵇˡᵉⁿᵈᵉʳ.
This is my first post here (and first project) <3, I made this to learn a lot of topics, principally to learn how is the process of connect 3D, Hardware and Software. (in this case via WiFi).
Workflow: You send commands from the client like "SET M 45" and the ESP32 server should make something with it, in this case: move a servo located in the MID part of the bone hierarchy 45 degrees. The 3D UI is just for testing commands BUT can work as a Digital Twin if u have the components.

\- Project Link

Stack:
3D Command Tester:
\- Cmake
\- Qt Quick 3D
\- Cpp
Client-PC:
\- Meson (I hate Cmake)
\- Conan
\- Boost.Asio - SPDLog
\- CPP
Server-ESP32:
\- ESP32 using WiFi.h

Feel free to ask anything :D

Also I'm a 3D Artist <3: 3D Art from this guy

https://redd.it/1s584db
@qt_reddit

Best place to learn Qt ?

I’ve been coding for about a year now, primarily focused on C++ and solving 220+ DSA problems. Recently, I decided to transition from competitive programming to application development using Qt, as C++ is my strongest language. However, I’m finding it a bit challenging to get comfortable with frameworks. I realized that learning theory without implementation isn't very effective, so I want to dive deeper into how Qt's libraries and properties actually work under the hood.

What are the best resources to master the core architecture of Qt? Also, am I on the right track by focusing on the core logic while exploring side interests like reverse engineering, cybersecurity (Nmap, Wireshark), and databases? I’d love to hear your thoughts

https://redd.it/1s4j83q
@qt_reddit

How to augment Qt Quick Controls with the KDE Kirigami library
https://www.youtube.com/watch?v=bVmjBztkS-8

https://redd.it/1s3ihxn
@qt_reddit

Is Qt/C++ a Good Choice for this?

I've recently retired after 40+ years as an electrical engineer and want to work on some home automation stuff around the house. Up until now I've had commercial home automation gadgets, but several of them have been sunsetted by their vendors and no longer work. I want to develop my own hardware to replace it so I have control over it without worrying about vendors stopping support.

For controlling and monitoring the hardware, I was planning to write apps using C#/WPF on Windows, but I've gotten tired of the spyware called Windows 11 and have been replacing it with Linux on all of my PCs. In getting away from MS products, I've been looking for something other than C#/WPF, and ran across Qt. Would this be a good choice to write native Linux GUI apps that interface to home automation hardware using serial, CAN, and WiFi? I'm not talking about anything really sophisticated, just something like a simple app to turn lights on and off and to set schedules, and simple database access to save and retrieve weather data from my weather station.

I have experience with C++, but that was 20 years ago.

https://redd.it/1s1qm83
@qt_reddit

Please I really need help from any of you to use Web engine widget to create my program.

I'm using qt 6.10.2. I know realize 6.11 version recently and I don't have a problem using that new version. Cmake says it can't find the widget. I use windows 11. Send me messages to help me

https://redd.it/1s24z72
@qt_reddit

Qt Creator Examples Disconnect

I installed the Qt Creator app on my Fedora system using dnf, but it didn't include the examples. I installed the examples separately, but Qt Creator doesn't show them on the Examples tab of the Welcome page.

Is there any way to point Qt Creator at the directory the examples are located in so it will display the examples in the Examples tab?

https://redd.it/1s1s0py
@qt_reddit

QWebEngineView and openstreetmap

Hi everyone, do you have any experience integrating openstreetmap into a qt widgets application using leaflet js?

What are your results? Is it good performance-wise?

https://redd.it/1s1r0hg
@qt_reddit

I built Caypper — a Qt/C++ wallpaper manager with Vim-style navigation and multi-DE support
https://www.reddit.com/gallery/1rztb9g

https://redd.it/1s0i2ih
@qt_reddit

Why does the last item get white text and how can I fix it?

https://preview.redd.it/pspe9jhxc1sg1.png?width=243&format=png&auto=webp&s=9d6ada40fdde95e1d09555e91a121e5871afd996

import QtQuick

import QtQuick.Controls



Window {

width: 640

height: 480

visible: true

title: qsTr("Hello World")

Column{

anchors.fill: parent

spacing: 5

padding: 5

Button {

width: 100

height: 40

text: "Click"

}

Button {

width: 100

height: 40

text: "Click"

}

Button {

width: 100

height: 40

text: "Click"

}

Button {

width: 100

height: 40

text: "Click"

}

}

}

https://redd.it/1s74mci
@qt_reddit

QModel Classes & Trees & DAGs
https://redd.it/1s78qm6
@qt_reddit

Building a unified UI/UX across multiple Qt tools (PySide6)

https://redd.it/1s7vw0u
@qt_reddit