Hi Maurice:

If I run x14c like

examples/c/x14c -dev whatever

on a KDE desktop that is set up with the high or extreme setting to
prevent focus stealing (via System Settings ==> Window Behavior ==>
Window Behavior ==> Focus Stealing Prevention Level), it works fine
for -dev xcairo, -dev qtwidget, and even -dev tk (once I click on the window
generated by x14c to give that window focus), but hangs (with top
giving 100 per cent of the cpu to x14c indefinitely) for -dev xwin
regardless of clicking on the window.  If I use -debug, I get one
expose event before attempting to click on the window, but then it
hangs with two black screens (one with a vertical red line through it) until I
hit ctrl-C.

Demo of multiple output streams via the xwin driver.
Running with the second stream as slave to the first.

ExposeEH: x = 92, y = 0, width = 408, height = 410, count = 0, pending
= 0
^C

If I set focus stealing prevention to none, low, or medium, all is well
with -dev xwin.

It appears with x14c (but no other example) that -dev xwin (but no
other device including -dev tk) requires focus stealing (perhaps for
the second window?) from the start or otherwise it hangs.  Do you (or
anybody else on this list) have some suggestions for fixing xwin.c so
this issue does not happen?

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
__________________________

Linux-powered Science
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