On 2017-07-07 09:57+0100 p.d.rosenb...@gmail.com wrote:
[...]
I believe that yes multiple streams did used to work with wxWidgets.
Hi Phil: It was good to hear from you. Your comment inspired me to try running examples/c/x14c -dev wxwidgets on my Linux platform for 5.11.0 (the release where the new wxwidgets device driver was first introduced), 5.11.1, and 5.12.0. There was a fresh configuration and build for each version. 5.11.0 displayed both master and slave GUI, but they were independent of each other, i.e., moving forward one page on one left the other completely unaffected. 5.11.1 segfaulted (oops, we should have caught that before that release!). 5.12.0 (before any of my IPC changes were introduced) has the present bad behaviour, i.e., slave GUI appears momentarily and then disappears. In sum, the behaviour of the new -dev wxwidgets has never been correct and has sometimes been completely problematic on Linux for example 14. So from this troubled Linux history I am not surprised that Arjen has also discovered a serious hang issue for this example on Windows. My feeling is the most likely cause of the current difficulties (both on Linux and Windows) is some interference between the two streams, i.e., this device driver is not currently stream safe. I am curious enough about that possibility to take a quick look, but I have other pre-release issues on my plate so if I cannot discover a quick fix (and nobody else can either), then we will have to put off looking at this until after the current release. 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); the Time Ephemerides project (timeephem.sf.net); PLplot scientific plotting software package (plplot.sf.net); 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 __________________________ ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
