On Friday 19 August 2011 00:06:11 Daniel Smith wrote:
> Hey All,
>
> Has anyone hit any roadblocks generating bindings (using Shiboken) for
> QGraphicsView subclasses? I'm not having any luck.
>
> I've been able to work my code down to a super simple test case
> (attached) which consists of a simple library, libtest, which is
> essentially just a single QGraphicsView subclass :
>
> class TestView : public QGraphicsView {
>
> public :
>
> // Constructors
> TestView(QWidget *parent=NULL);
> };
>
> TestView::TestView(QWidget *parent) : QGraphicsView(parent) {
>
> }After minor tweaks on Makefiles to use python2.7 and adjust some paths your example worked on my machine without segfaults. Anyway if you are creating bindings for Qt-based libraries is good to use the following options on generator: --enable-pyside-extensions --enable-parent-ctor-heuristic --enable-return-value-heuristic > I then have a standard Shiboken setup with a typesystem.xml containing a > single object-type entry for TestView : > > <?xml version="1.0"?> > <typesystem package="test"> > <load-typesystem name="typesystem_core.xml" generate="no"/> > <load-typesystem name="typesystem_gui.xml" generate="no"/> > <object-type name="TestView"/> > </typesystem> > > and a global.h : > > #undef QT_NO_STL > #undef QT_NO_STL_WCHAR > > #ifndef NULL > #define NULL 0 > #endif > > #include "pyside_global.h"> > #include <test.hh> > > If I then 'make' the project, everything compiles fine, but the > resulting module seqmentation faults on import inside > Shiboken::ObjectType::getMultipleIheritanceFunction(SbkObjectType*). > > Here's the gdb back trace : > > #0 0x00007ffff4966907 in > Shiboken::ObjectType::getMultipleIheritanceFunction(SbkObjectType*) > () from > > /vol/apps/pyside_qt4.7_kubuntu_10_04-1.0.4_64/lib/libshiboken-python2.6.so > .1.0 #1 0x00007ffff62ca558 in init_TestView (module=0x7ffff6b671d8) at > test/testview_wrapper.cpp:1537 > #2 0x00007ffff62ca2d1 in inittest () at > test/test_module_wrapper.cpp:58 #3 0x00007ffff7b27eeb in > _PyImport_LoadDynamicModule > (name=0x7fffffff52a0 "test", pathname=0x7fffffff41e0 "test.so", > fp=<value optimized out>) at ./Python/importdl.c:53 > #4 0x00007ffff7b25fd9 in import_submodule (mod=0x7ffff7da2b40, > subname=0x7fffffff52a0 "test", fullname=0x7fffffff52a0 "test") at > Python/import.c:2589 > #5 0x00007ffff7b2623b in load_next (mod=0x7ffff7da2b40, > altmod=0x7ffff7da2b40, p_name=<value optimized out>, > buf=0x7fffffff52a0 "test", p_buflen=0x7fffffff62b0) at > Python/import.c:2409 > #6 0x00007ffff7b2675f in PyImport_ImportModuleLevel (name=<value > optimized out>, globals=0x63cd30, locals=<value optimized out>, > fromlist=0x7ffff7da2b40, level=<value optimized out>) at > Python/import.c:2131 > #7 0x00007ffff7b01f0d in builtin___import__ (self=<value optimized > out>, args=<value optimized out>, kwds=<value optimized out>) at > Python/bltinmodule.c:48 > #8 0x00007ffff7a700b2 in PyObject_Call (func=0x7ffff7fa9098, > arg=0x7ffff7ed7a48, kw=0x0) at Objects/abstract.c:2492 > #9 0x00007ffff7b07645 in PyEval_CallObjectWithKeywords > (func=0x7ffff7fa9098, arg=0x7ffff7ed7a48, kw=0x0) at > Python/ceval.c:3575 #10 0x00007ffff7b0a1b4 in PyEval_EvalFrameEx > (f=0x7d6600, > throwflag=<value optimized out>) at Python/ceval.c:2136 > #11 0x00007ffff7b0e673 in PyEval_EvalCodeEx (co=0x7ffff6bd1a80, > globals=<value optimized out>, locals=<value optimized out>, > args=0x0, argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0, > closure=0x0) at Python/ceval.c:2968 > #12 0x00007ffff7b0ea72 in PyEval_EvalCode (co=0x601140, > globals=0x60, locals=0x7fffef2ed6c0) at Python/ceval.c:522 > #13 0x00007ffff7b328a0 in PyRun_InteractiveOneFlags (fp=<value > optimized out>, filename=0x7ffff7b69d97 "<stdin>", > flags=0x7fffffff6880) at Python/pythonrun.c:1335 > #14 0x00007ffff7b32aae in PyRun_InteractiveLoopFlags > (fp=0x7ffff717f6a0, filename=0x7ffff7b69d97 "<stdin>", > flags=0x7fffffff6880) at Python/pythonrun.c:760 > #15 0x00007ffff7b32bbc in PyRun_AnyFileExFlags (fp=0x7ffff717f6a0, > filename=0x7ffff7b69d97 "<stdin>", closeit=0, flags=0x7fffffff6880) > at Python/pythonrun.c:729 > #16 0x00007ffff7b3e722 in Py_Main (argc=<value optimized out>, > argv=0x7fffffff69a8) at Modules/main.c:599 > #17 0x00007ffff6e20c4d in __libc_start_main (main=<value optimized > out>, argc=<value optimized out>, ubp_av=<value optimized out>, > init=<value optimized out>, fini=<value optimized out>, > rtld_fini=<value optimized out>, > stack_end=0x7fffffff6998) at libc-start.c:226 > #18 0x0000000000400619 in _start () > > Any help would be greatly appreciated! > > Cheers, > Daniel -- Hugo Parente Lima INdT - Instituto Nokia de Tecnologia
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