Integrating a .jar in a QT window

Hi everybody !

I am actually trying to create a GUI using QTCreator on MacOSX. A part of the work I want to do in this UI has already been done in Java, and I detain the executable .jar which launch this application in a new window.

I would like to simply insert the window launched through the .jar in a sub-window of my QT mainwindow (for instance in a specific Qframe).

My code is actually as this :

mainwindow.h

Code:

---

#include<QProcess>
 
...
 
Qprocess *PFDprocess;

---

mainwindow.cpp

Code:

---

...
PFDprocess = new QProcess( );
PFDprocess -> start("java -jar /path/to/my/file.jar");
...

---

The problem is that the .jar executes in a new window, even if I specify a "parent object" in the constructor of QProcess(---).

Is there a way to specify that every output generated by the QProcess execution can be displayed in a specific area (in the mainwindow), and not in a new window ?

I use QTCreator with QT 4.8.1.

Thank you very much

Eska

QProcess derives from QIODevice. By default the standard output of the process is bound to the QProcess. Therefore what you can do is:
1. read asynchronously from the QProcess as you would from any QIODevice;
2. interpret the data as text;
3. append the text to a display widget such as QTextEdit.

Thank you yeye_olive..

I understand that it's possible in order to get text, but my .jar is in fact a whole GUI.

To be more specific, my QT application is a Cockpit for a home-made flight simulator, and the .jar gives a render of a PFD (http://www.albadawi.be/images/PFD%20B747-400.jpg) that is already communicating with my simulation parameters.

The objective would be to inser this java feature in part of the Qt window...

I hope I am clear enough.

Eska

In a general case this is not possible, In some cases, on some platforms with applications written in a special way this is possible. In your particular case it's probably not, though (unless you use some platform specific API for this).

Thank you... Then I guess that is not possible...

Maybe it's possible to cheat though, using transparency in the QT window and launching automatically the .jar at the good place in background... I will see...

Thanks a lot... If anyway i find alternative solutions I will add them to this thread.

Eska