Hi Phil I tested on a different setting
Ubuntu i686 GNU/Linux Using wxWidgets installed from packages using the PLplot from git git clone http://git.code.sf.net/p/plplot/plplot plplot-plplot cd plplot-plplot/ mkdir build cd build cmake .. -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug -DBUILD_SHARED_LIBS:BOOL=OFF -DENABLE_f95:BOOL=OFF -DENABLE_tcl:BOOL=OFF -DENABLE_tk:BOOL=OFF -DCMAKE_INSTALL_PREFIX:PATH=/home/pvn/install/plplot-5.11.1 -DPL_HAVE_PTHREAD:BOOL=OFF -DPLD_xwin:BOOL=OFF -DPLD_wxwidgets:BOOL=ON -DwxWidgets_ROOT_DIR:PATH=/usr/lib/i386-linux-gnu -DwxWidgets_LIB_DIR:PATH=/usr/lib/i386-linux-gnu -DwxWidgets_CONFIGURATION=mswud -DENABLE_MIX_CXX=ON -DwxWidgets_EXCLUDE_COMMON_LIBRARIES:BOOL=OFF -DBUILD_TEST:BOOL=ON >& cmake.txt & make >& make.txt & cd /home/pvn/svn/plot/plplot-5.11.1/build/examples/c++/ ./wxPLplotDemo Segmentation fault (core dumped) -Pedro ----- Original Message ----- From: "Pedro Vicente" <pedro.vice...@space-research.org> To: <plplot-devel@lists.sourceforge.net>; "Phil Rosenberg" <p.d.rosenb...@gmail.com> Sent: Saturday, December 10, 2016 2:52 AM Subject: Re: [Plplot-devel] wxPLplotDemo.cpp errors > Hi Phil > > My idea for a fix is to move the stream initialization that is now on > > void wxPLplotwindow<WXWINDOW>::OnCreate( wxWindowCreateEvent &event > { > if ( !m_created ) > > either to the OnSize or onPaint events > > void wxPLplotwindow<WXWINDOW>::OnSize( wxSizeEvent& WXUNUSED( event ) ) > > and also in the plot call do this > > template< class WXWINDOW > > void Plot( wxPLplotwindow<WXWINDOW> *plotwindow ) > { > wxPLplotstream* pls = plotwindow->GetStream(); > > if (pls == NULL) > { > return; > } > > > Like this , in this sequence > > > wxPLplotwindow<wxFrame> *frame = new wxPLplotwindow<wxFrame>(); > frame->Create( NULL, wxID_ANY, wxT( "wxPLplotDemo" ) ); > frame->SetIcon( wxIcon( graph ) ); > frame->Show(); > Plot( frame ); > > > first we go to > Plot( frame ); > > but the stream is NULL because > :OnCreate > was not called, but the function returns, avoiding the seg fault > > then the window gets a paint or size event, and the stream initialization > code is called > at this time I have a PLplot empty black window > > but because > Plot( frame ); > was only called at start, it is not called again, so there is no draw > > any ideas here ? > > of course making the Plot() call in another app function should work > > > If you could replicate this issue, that would be great. > I am using CentOS 6.8, PLplot.5.11.1 , wxWidgets 3.1.0 > > > > > > ----- Original Message ----- > From: Pedro Vicente > To: plplot-devel@lists.sourceforge.net ; Phil Rosenberg > Sent: Saturday, December 10, 2016 12:59 AM > Subject: Re: [Plplot-devel] wxPLplotDemo.cpp errors > > > Hi Phil > > So, the issue seems to be the same that I have been reporting > > > In the wxPLplotDemo.cpp code you have these callling functions > > > wxPLplotwindow<wxFrame> *frame = new wxPlDemoFrame(); > frame->Create( NULL, wxID_ANY, wxT( "wxPLplotDemo" ) ); > > > that make 2 calls to the PLplot library, or the wxWidgets driver of it > all these calls are in the header file wxPLplotwindow.h > > first the constructor is called > > template<class WXWINDOW> > wxPLplotwindow<WXWINDOW>::wxPLplotwindow( bool useGraphicsContext, wxSize > clientSize ) > : m_created( false ), m_initialSize( clientSize ) > > > then this call OnCreate() is called, like you mentioned > and the !m_created bool makes the initialization of the stream happen > > the problem is that this function id *NOT* called on my linux build (it > is > on the Windows build) > so therefore later > wxPLplotstream* pls = plotwindow->GetStream(); > this is NULL, so therefore it seg faults on the plot calls > > //! This is called when the widow is created i.e. after WXWINDOW::Create > // has been called. We note that this has been called to avoid attempting > // to redraw a plot on a window that hasn't been created yet. > template<class WXWINDOW> > void wxPLplotwindow<WXWINDOW>::OnCreate( wxWindowCreateEvent &event ) > { > if ( !m_created ) > > so, one quick try is to put the code of > > void wxPLplotwindow<WXWINDOW>::OnCreate > that is not called on the constructor maybe ? > > -Pedro > > ----- Original Message ----- > From: Pedro Vicente > To: plplot-devel@lists.sourceforge.net ; Phil Rosenberg > Sent: Friday, December 09, 2016 11:57 PM > Subject: [Plplot-devel] wxPLplotDemo.cpp errors > > > Hi Phil > > So, resuming the last thread about wxWidgets, what I did was to build and > run wxPLplotDemo.cpp from PLpplot 5.11.1 on CentOS 6.8 > > all builds fine, but when I do run , I get a seg fault > > [pedro.vicente@rhw9121 c++]$ cd > /data/home002/pvicente/plplot/build/examples/c++ > [pedro.vicente@rhw9121 c++]$ ./wxPLplotDemo > Segmentation fault > > I know that only this information is not much help to you to debug, but in > the next couple of days I'll be debugging this and posting here any > solution. > > my cmake call was > > cmake .. -G "Unix > Makefiles" -DBUILD_SHARED_LIBS:BOOL=OFF -DENABLE_f95:BOOL=OFF > -DENABLE_tcl:BOOL=OFF > -DENABLE_tk:BOOL=OFF > -DCMAKE_INSTALL_PREFIX:PATH=/data/data127/pvicente/install/plplot-5.11.1d > -DPL_HAVE_PTHREAD:BOOL=OFF -DPLD_xwin:BOOL=OFF -DPLD_wxwidgets:BOOL=ON > -DwxWidgets_ROOT_DIR:PATH=/data/data127/pvicente/install/wxwidgets-3.1.0 > -DwxWidgets_LIB_DIR:PATH=/data/data127/pvicente/install/wxwidgets-3.1.0/lib > -DwxWidgets_CONFIGURATION=mswud -DENABLE_MIX_CXX=ON > -DwxWidgets_EXCLUDE_COMMON_LIBRARIES:BOOL=OFF > -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DBUILD_TEST:BOOL=ON >& cmake.txt & > > > the output of > cmake > and > make > are attached > > -Pedro > > > > ------------------------------------------------------------------------------ > Developer Access Program for Intel Xeon Phi Processors > Access to Intel Xeon Phi processor-based developer platforms. > With one year of Intel Parallel Studio XE. > Training and support from Colfax. > Order your platform today.http://sdm.link/xeonphi > > > > _______________________________________________ > Plplot-devel mailing list > Plplot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/plplot-devel > > > > > ------------------------------------------------------------------------------ > Developer Access Program for Intel Xeon Phi Processors > Access to Intel Xeon Phi processor-based developer platforms. > With one year of Intel Parallel Studio XE. > Training and support from Colfax. > Order your platform today.http://sdm.link/xeonphi > > > > _______________________________________________ > Plplot-devel mailing list > Plplot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/plplot-devel > > > ------------------------------------------------------------------------------ > Developer Access Program for Intel Xeon Phi Processors > Access to Intel Xeon Phi processor-based developer platforms. > With one year of Intel Parallel Studio XE. > Training and support from Colfax. > Order your platform today.http://sdm.link/xeonphi > _______________________________________________ > Plplot-devel mailing list > Plplot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/plplot-devel > ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. 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