On Tue, 2008-05-13 at 18:44 +0200, Thibault Genessay wrote: > Hi Jeremy > > > On Tue, May 13, 2008 at 6:16 PM, Jeremy Moles <[EMAIL PROTECTED]> wrote: > > > > > > On Tue, 2008-05-13 at 17:49 +0200, Thibault Genessay wrote: > > > Hi Jeremy > > > > > > I've just tried to compile your code using Visual Studio 9.0 and got > > > lots of errors that are almost all related to 'const' usage. I am > > > sometime suspicious about Redmond compilers so I also tried to compile > > > the code on Debian 4.0, and the errors are (hopefully) similar. > > > > > > Here is the output from the Linux build: > > > > > > [EMAIL PROTECTED]:~/prog/osgWidget-0.1.8$ make > > > Scanning dependencies of target osgWidget > > > [ 2%] Building CXX object CMakeFiles/osgWidget.dir/src/Box.o > > > [ 5%] Building CXX object CMakeFiles/osgWidget.dir/src/Canvas.o > > > [ 8%] Building CXX object CMakeFiles/osgWidget.dir/src/Frame.o > > > /home/tibo/prog/osgWidget-0.1.8/include/osgWidget/UIObjectParent: In > > > member function 'T* osgWidget::UIObjectParent<T>::_getByName(const > > > std::string&) const [with T = osgWidget::Widget]': > > > /home/tibo/prog/osgWidget-0.1.8/include/osgWidget/UIObjectParent:76: > > > instantiated from 'const T* > > > osgWidget::UIObjectParent<T>::getByName(const std::string&) const > > > [with T = osgWidget::Widget]' > > > /home/tibo/prog/osgWidget-0.1.8/src/Frame.cpp:109: instantiated from > > here > > > /home/tibo/prog/osgWidget-0.1.8/include/osgWidget/UIObjectParent:56: > > > error: invalid conversion from 'const osgWidget::Widget*' to > > > 'osgWidget::Widget*' > > > make[2]: *** [CMakeFiles/osgWidget.dir/src/Frame.o] Error 1 > > > make[1]: *** [CMakeFiles/osgWidget.dir/all] Error 2 > > > make: *** [all] Error 2 > > > > I'd be real interested to know what version of GCC is complaining about > > this. I don't see this error on Fedora 8/GCC4.1, and I've never had an > > e-mail about it or antyhing. The code, as far as I can tell, is > > perfectly valid C++. Perhaps I can come up with a workaround for this, > > as I really do believe it's valid C++... > > > > > > > And Windows build: > > > > > > 3>------ Build started: Project: osgWidget, Configuration: Debug Win32 > > ------ > > > 3>Compiling... > > > 3>WindowManager.cpp > > > 3>.\src\WindowManager.cpp(191) : error C2440: 'initializing' : cannot > > > convert from 'const osgWidget::Window *' to 'osgWidget::Window *' > > > 3> Conversion loses qualifiers > > > 3>.\src\WindowManager.cpp(203) : error C2440: 'initializing' : cannot > > > convert from 'const osgWidget::Widget *' to 'osgWidget::Widget *' > > > 3> Conversion loses qualifiers > > > 3>.\src\WindowManager.cpp(333) : error C2440: 'initializing' : cannot > > > convert from 'const osgWidget::Window *' to 'osgWidget::Window *' > > > 3> Conversion loses qualifiers > > > [...] > > > > This is the exact same problem as above. I can definitely come up with a > > workaround, but if possible I'd like to see your version of GCC first if > > possible. :) > > > > Strange ... I have 4.1 as well: > [EMAIL PROTECTED]:~$ g++ --version > g++ (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21) > > However, on the C++ side, I feel that there is a problem somewhere. At > line 191 of WindowManager.cpp, you write > > Window* parent = wl->back()->getParent(); // wl is declared as 'const > WidgetList* wl'
Was this the only line you needed to change? Were there others? :) > Which does not seem valid to me. wl is a const list that holds const > pointers, which can't be casted to non-const Window*. I have tried to > replace line 191 by > const Window* parent = ... > under Visual C++ and the error for that line went away. > > As far as I have looked in the sources to find the errors, both > compilers seemed to be right. The fact that two completely different > environments (XP SP2 + VC 9 + CMake 2.5, Debian 4 + GCC 4.1.2 + CMake > 2.6) give the same errors do not look like a coincidence. > > But ... I'm really puzzled by this because I had successfully compiled > osgWidgets-0.17 previously and I doubt all of these errors were > introduced in the meantime. > > Regards > > Thibault > > > > > > > > Thibault > > > > > > On Tue, May 13, 2008 at 5:03 PM, Jeremy Moles <[EMAIL PROTECTED]> wrote: > > > > I've put the (hopefully!) final version of a separate osgWidget up on > > > > the googlecode site: > > > > > > > > http://osgwidget.googlecode.com > > > > > > > > This means that I feel like I'm getting closer to the point where it > > > > would make sense to submit osgWidget to Robert to see how he feels > > about > > > > inclusion into the main trunk, with ongoing development there instead. > > > > This will expose far more eyeballs to osgWidget's codebase, which can > > > > only be good as development continues. > > > > > > > > The next version (I'll call 0.2.0 for now) will be the one I submit, > > and > > > > I'm going to construct a serious TODO list of items on the website > > > > project page of things I want to accomplish prior to this. I can't say > > > > how long this will take, but hopefully no longer than about two weeks > > or > > > > so... > > > > > > > > This also means I'll probably make a few posts within the next two > > weeks > > > > asking questions regarding some outstanding issues, soliciting design > > > > opinions, etc. I only even mention this so that folks don't think I'm > > > > spamming the lists. :) > > > > > > > > Keep in mind that even if Robert is feeling brave enough to allow this > > > > code to sneak in, it won't nearly be "feature complete." The goal, > > > > however, isn't to provide a final version but to expose more people > > and > > > > hopefully expose more bugs/flaws. > > > > > > > > _______________________________________________ > > > > osg-users mailing list > > > > osg-users@lists.openscenegraph.org > > > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > > > > > > > > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
