Re: Question: Making a Gtk+ application interacts with octave

[Muthiah Annamalai <dearestchum yahoo co in>]

Hello!

You can use this code to show a image, in a persistent
way.

---------------------------------------------
#! /usr/bin/octave -q

% (C) July 2005, Muthiah Annamalai
<gnumuthu-at-users-nospam-sf-spamno-net>
%

% Ensure: 
%
%matrix you pass to gtk_imshow_set() has only 
% elements with normalized to value [0,1].
%
%size of window must be set explicitly, to greater
%than that of your ImageShow[drawing area] widget
%
%get the ImShow widget using, gtk_imshow_get_da(x),
%and use this as real widget handler. this interface 
%will change in future.


disp('Simple GTK+ Image Show example');
x=0

function timeout()
     global x
     disp('Timeout')
     gtk_imshow_set(x,rand(256));
     gtk_widget_queue_draw(gtk_imshow_get_da(x));
end

function main()
     global x;
     gtk()
     gtk_init()
     w=gtk_window_new(GTK_WINDOW_TOPLEVEL);
     
     gtkimshow()
     disp('ImShow Creating')
     x=gtk_imshow_new(200,200);
     disp('ImShow Created')
     
     img=rand(256);
     gtk_imshow_set(x,img);
     gtk_timeout_add(2000,"timeout"); %keep changing
images every 2 seconds.
     g_signal_connect(w,"destroy","gtk_main_quit");   


     gtk_container_add(w,gtk_imshow_get_da(x));
     gtk_window_set_default_size(w,300,300);

     gtk_widget_show(gtk_imshow_get_da(x));
     gtk_widget_show_all(w);

     gtk_main();
end

main()
--------------------------------------------------

To use this program you need octave-gtk+  and
[http://sourceforge.net/projects/octave-gtk/]
the imshow.tgz package from
[http://octave-gtk.sf.net/imshow.tgz]

Ive added a screenshot here:
[http://octave-gtk.sf.net/imshow.png].

Cheers
Muthu


                
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