On 2010-05-10 13:55+0100 Andrew Ross wrote: > On Fri, May 07, 2010 at 09:03:59PM -0400, chm wrote: >> On 5/7/2010 1:03 PM, SourceForge.net wrote: >>> Summary: -dev xwin shows fatal error when window closed >>> >>> Initial Comment: >>> For -dev xwin, when you close the window by alt+F4 or other equivalents, >>> the following fatal error message is the result: >>> >>> XIO: fatal IO error 11 (Resource temporarily unavailable) on X server >>> >>> This fatal error can be disruptive to certain environments (e.g., lisp) >>> and should be replaced by a smooth exit from PLplot. as occurs under these >>> same circumstances for -dev qtwidget and -dev wxwidgets. >>> >>> >> >> I took a look at xwin.c and it appears that a number of the X11 >> calls do not have check for error returns. Perhaps this is the >> origin of the problem. > > The underlying problem is that to detect pressing of the close button in > the top right of a X window you need to explicitly ask for it to be > forwarded on, and then handle the consequences yourself. I've now > committed a change to do this. The event handling in the xwin driver is > not simple and so I would appreciate people robustly testing these > changes to make sure I've not broken anything else.
Thanks very much for taking on this tricky fix. I tried a lot of variations of x01c with -xor and -locate with various ways of closing the window and all was well. I also tried multipage examples and all seemed well. Finally, I tried -dev tk (which depends on -dev xwin code) using the command examples/c/x01c -dev tk and I get a hang from alt+F4 or any other method of closing the window. (BTW, to set up all the prerequisites for that command you can use "make -j4 test_c_tk" or "make -j4 all".) I am not sure whether this -dev tk hang is a long-standing problem or the result of your recent change because up to now I have rarely tested closing the window, but it would be great if you would be willing to take a look. 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 __________________________ ------------------------------------------------------------------------------ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
