Let's write QML/QtQuick GUI for OCaml (or Reason) using lablqml!
In this repo you can find my work about integrating OCaml and Qt. Initially, I planned to generate binding code for OCaml and Qt Widgets and called this library
lablqt. But I found it hard to implement mostly because Qt relies on inheritance very much (we can't add onClick handler for button without inheritance). Later I decided to generate binding code for OCaml and QML/QtQuick. And I believe that QtQuick is the right way to create UI in Qt right now. See online book for getting started with Qt/QML itself
From 14th of February 2017 it's renamed from
lablqml because it is actually about QtQuick and not QtWidgets or Qt itself. If you really need QtWidgets you can check out mrvn's work or def's.
PPX syntax extension with code generator is in
Library for interfacing with QtQuick 2 is in
Demo that can be build during opam installation is in
make demoto build it.
Old demos that are not using
duneas build system are in
qocamlbrowser(ocamlbrowser with QtQuick instead of Tcl/Tk) is located in separate repo.
./configure && make to build it. Don't forget to install
g++ and good Qt version (>= 5.3 I think,
./configure will check for it, btw).
$ opam show lablqml --list-files
There is a library here. It's fine to use it for simple programs
There is also
ppx_qt executable. It is used to generate C++ code from OCaml. See
demos/ for examples
Minimal ocamlfind-based helloworld
➜ cat a.ml
let main () = ()
let () =
run_with_QQmlApplicationEngine Sys.argv main "Root.qml"
➜ cat Root.qml
import QtQuick 2.0
import QtQuick.Controls 1.0
color: "#FFFFDF" // we declare rectangle with custom background color
height: 300; // with custom size
text: "Click me!"
anchors.fill: parent // all space in parent Rectangle will be clickable
➜ ocamlfind opt -package lablqml a.ml -thread -linkpkg -cclib -lQt5Quick -cclib -lQt5Qml -cclib -lQt5Network -cclib -lQt5Widgets -cclib -lQt5Gui -cclib -lQt5Core -cclib -lstdc++
Playing with REPL