help embedding KDE application inside java application

[Koos Vriezen]

On Sat, 8 Nov 2003, Koos Vriezen wrote:

> On Sat, 8 Nov 2003, S.Thanga Prakash wrote:
>
> >     I have a requirement to embed KDE application eg,.konqueror,kwrite
> > into a java program..
> >
> > how to do it?
> > help me for the same..
>
> Only way I can think of is
> http://java.sun.com/j2se/1.3/docs/guide/awt/AWT_Native_Interface.html
> and reparent your X11 app main window to this java.awt.Canvas X11 Window.
> Not that I have tried it though..

..what could be more fun than actually try it on a sunday afternoon :-).

Attached something that does all that. However you need to patch kdelibs,
so that you don't need to fight with the wm.
kdelibs.diff: adds a --wid <X11 Window> option for all KDE applications
              using KMainWindow (not sure if XConfigureEvent is needed
              though, but hacking libkdecore.so is no fun with all that X
              restarting..)
x11.c: small demo X11 application that prints its X11 Window to the
       stdout, so that you can do 'konqueror --wid xxx'
Canvas.java: the slightly modified SUN demo
Canvas.{h,cpp}: the JNI shared lib sources. I compiled it as
        g++ -o libmyRenderingLib.so -shared MyCanvas.cpp \
               -I/usr/X11R6/include \
                -I/usr/local/jdk/include/linux \
                -I/usr/local/jdk/include \
                -L/usr/X11R6/lib \
                -L/usr/local/jdk/jre/lib/i386 -lX11 -ljawt  -fPIC
Run the java program as
   LD_LIBRARY_PATH=`pwd` /usr/local/jdk/jre/bin/java MyCanvas
In another console run 'konqueror --wid xxx' where xxx is the window
printed to the stdout of the java program.

There is a small focus issue when ALT-TABing to another window. And of
course patching kdelibs is only doable for private use only. But it does
show that it actually works!

 >
> Koos
>
>
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