[Octave-bug-tracker] [bug #44116] qt graphics toolkit not available with --no-gui option

[Dan Sebald]

Follow-up Comment #2, bug #44116 (project octave):

I assume that Qt graphics toolkit uses the Qt environment to place windows as
opposed to an outboard driver.  With CLI no Qt environment exists.  (Octave is
a subprocess in the Qt environment when run as a GUI...only the main Qt
process can run graphics.)

I'm pretty sure this is the case because the file __init_qt__.cc appears in
the libgui subdirectory.  (The function __init_XYZ__() is evaluated inside
"graphics_toolkit()".)  It's the file libgui/graphics/__init_qt__.cc if you'd
like to look more closely.


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