[Octave-bug-tracker] [bug #48005] menu() does not work without X

[Atri Bhattacharya]

Follow-up Comment #4, bug #48005 (project octave):

Hi Philip,
Thanks for your comments. I see your point, so one could try something like
the patch pasted here. But at least in the context of the check for menu.m,
wouldn't this make the first condition in menu() redundant? I mean the

isguirunning()

part of the check in menu() should not be needed any more, as the other check

usejava ("awt")

will already ensure this for us.

Otoh, my previous patch ensures that you can actually create awt objects,
which seems like a more ideal test for usejava's usecase. So pros and cons...

What do you think?


dex: octave-4.0.1/scripts/java/usejava.m
===================================================================
--- octave-4.0.1.orig/scripts/java/usejava.m
+++ octave-4.0.1/scripts/java/usejava.m
@@ -62,7 +62,9 @@ function retval = usejava (feature)
     case "awt"
       try
         dum = methods ("java.awt.Frame");
-        retval = true;
+        ## awt is useless without an X session, test if java is running
+        ## in Headless mode and return ! boolean result as retval
+        retval = ! javaMethod("isHeadless", "java.awt.GraphicsEnvironment");
       end_try_catch
     case "desktop"
       ## Octave has no Java based GUI/desktop, leave retval = false





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