Name: lablqml
Brand: lablqml
SKU: //Kakadu/lablqml
Rating: 2.0875 (135 reviews)

Kakadu/ lablqml

C++

OCaml

Haskell

Ruby

qtquick

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About the developer

Kakadu

135 Stars

13 Forks

671 Commits

11 Opened issues

Description

Interfacing Qt/QML with OCaml. Formely known as lablqt

Services available

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Contributors list

Readme

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

lablqt

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.

Directories mapping:

PPX syntax extension with code generator is in
```
ppx/
```
.
Library for interfacing with QtQuick 2 is in
```
lib
```
.
Demo that can be build during opam installation is in
```
dune_test
```
. Use
```
make demo
```
to build it.
Old demos that are not using
```
dune
```
as build system are in
```
demos/
```
.
Demo app
```
qocamlbrowser
```
(ocamlbrowser with QtQuick instead of Tcl/Tk) is located in separate repo.

Github pages site and tutorial are available.

Use

./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).

Installed files

$ opam show lablqml --list-files
/home/kakadu/.opam/4.07.0+fp+flambda/bin/ppx_qt
/home/kakadu/.opam/4.07.0+fp+flambda/doc/lablqml/CHANGELOG
/home/kakadu/.opam/4.07.0+fp+flambda/doc/lablqml/README.md
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/META
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/dune-package
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.a
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.cma
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.cmi
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.cmt
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.cmti
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.cmx
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.cmxa
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.cmxs
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.h
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.ml
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/lablqml.mli
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/liblablqml_stubs.a
/home/kakadu/.opam/4.07.0+fp+flambda/lib/lablqml/opam
/home/kakadu/.opam/4.07.0+fp+flambda/lib/stublibs/dlllablqml_stubs.so

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

open Lablqml

let main () = ()
let () =
  run_with_QQmlApplicationEngine Sys.argv main "Root.qml"

➜  cat Root.qml

import QtQuick 2.0
import QtQuick.Controls 1.0
ApplicationWindow {
    color: "#FFFFDF" // we declare rectangle with custom background color
    width:  400;
    height: 300;     // with custom size
    Text {
        anchors.centerIn: parent
        text: "Click me!"
    }
    MouseArea {
        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++
➜  ./a.out

Playing with REPL

#thread;;
#require "lablqml";;