Using QtJambi on Windows

These are my notes from trying Qt Jambi.

I am not very good at GUI work. If I am going to spend time on it, I would rather learn something that I can apply to other languages as well, so I chose QtJambi. Development does not seem to have been very active for the past several years, but I tried it anyway.

Installation

Download and install the Windows 32bit 4.8.5-beta4 version from here.

Write a main like this.

import com.trolltech.qt.gui.QApplication;
import com.trolltech.qt.gui.QPushButton;

public class Main {
    public static void main(String[] args) {
        QApplication.initialize(args);

        QPushButton hello = new QPushButton("Hello World!");
        hello.resize(120, 40);
        hello.setWindowTitle("Hello World");
        hello.show();

        QApplication.execStatic();
    }
}

Copy qtjambi-4.8.5.jar and qtjambi-native-win32-mingw-4.8.5.jar from the installation folder into the current directory, then run the commands below from the command line.

$javac -cp qtjambi-4.8.5.jar;qtjambi-native-win32-mingw-4.8.5.jar Main.java$ jar cvf Main.jar *.class $ java -cp qtjambi-4.8.5.jar;qtjambi-native-win32-mingw-4.8.5.jar;Main.jar Main

Create a project for IntelliJ

Create a project that can be imported from IntelliJ. The folder structure should look like this.

QtJambiTest --- lib --- qtjambi-4.8.5.jar
             |       +- qtjambi-native-win32-mingw-4.8.5.jar
             |
             +- project --- plugins.sbt
             |
             +- src --- main --- java --- Main.java
             |
             +- build.sbt

Add the following to project/plugins.sbt.

addSbtPlugin("com.github.mpeltonen" % "sbt-idea" % "1.6.0")

Write build.sbt like this.

name := "QtJambiTest"

version := "0.0.1"

scalaVersion := "2.11.2"

libraryDependencies ++= Seq(
)

Then run the following command from the command line to create the IntelliJ project.

$ sbt gen-idea

You should then be able to run the program from the generated project.

Generate source code from a .ui file created in Qt Designer

You can generate source code from a .ui file with the steps below, but some functionality does not seem to be supported. I saw warnings for enum-related parameters.

1. Rename *.ui to *.jui
2. Open the UI file and remove <?xml version="1.0" encoding="UTF-8"?>
3. Remove the blank line at the top
4. Change <ui version="4.0"> to <ui version="4.0" language="jambi">
5. Run juic -cp .

References

• Stackoverflow: How to convert ui file to jui file
• Qt Jambi Reference Documentation