[Octave-bug-tracker] [bug #40242] FLTK + GUI = crash on MacOSX

[Michael Goffioul]

Follow-up Comment #13, bug #40242 (project octave):

The FLTK backend for octave is designed to run synchronously with the octave
interpreter (using the readline event loop); hence it is running in the octave
thread.

This is probably a fundamental problem when using the octave GUI, where octave
interpreter is not running in the main thread. Mac OS X platform is much more
strict (less flexible) in that regard and I believe any GUI interaction must
occur in the GUI thread, and must be the main thread.

QtHandles design is different and run the GUI in a separate thread than
octave; when a GUI thread (containing the QApplication object) already exists,
it hooks up to that GUI thread. Interaction between octave and the GUI is done
using non-blocking signal/slot mechanism. This difference in design is why
QtHandles works with the GUI in Mac OS X.


    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?40242>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/