Hello Robert, You are right, It is not safe, we should not use my changes, because it changes behavior.
You also right changing GraphicsWindowWin32::determineWindowPositionAndStyle(..) to virtual solve this issue. I will be able to override this function and change default styles. Alexander 2014/1/21 Robert Osfield <[email protected]> > Hi Alexandre, > > I haven't used Windows for over a decade so can't help on the Windows > specifics like this so will have to defer to other Widows developers for > guidance on how to resolve these issue. I don't feel just changing the > default style settings is going to be safe without widespread testing. > > My inclination would be to expose these settings in a way that users can > set them to what they want, either my subclassing from GraphicsWindowWin32 > or by us introducing extra options to pass in with the > GraphicsConext::Traits object. For instance we could make > GraphicsWindowWin32::determineWindowPositionAndStyle(..) a virtual method, > the same could be done for the other methods that go to create the window. > > Thoughts? > Robert. > > > On 28 November 2013 15:15, Alexander Sinditskiy > <[email protected]>wrote: > >> Hello all. >> >> I have nvidia card, windows 7 sp1. >> >> My app is annoying blinking when I am trying to work with fullscreen >> multidisplay setup. >> To reproduce this issue you need just create empty viewer and click on >> screens. >> >> You can see my issue on the video: >> >> http://www.youtube.com/watch?v=WbHJznlhMio - record using camera >> http://www.youtube.com/watch?v=R1EVZ_nbRcY - record using screen capture >> >> I tested it on lot of nvidia cards, I can reproduce it with every nvidia >> card. >> >> I think "Windows" is trying to enable some mode on right screen and it >> causes blinking. Also I unable to grab right screen by camstasia. >> >> I found that It caused by WS_POPUP flag on windows creation. >> (src/osgViewer/GraphicsWindowWin32.cpp) >> Also you can check that fullscreen Firefox does not have this flag and >> works perfectly. >> >> But If I disable this flag I have another issue. Initially created osg >> window have WS_EX_WINDOWEDGE flag even when I pass 0 as flags. (disable >> everything). >> It is really strange behavior of CreateWindowEx function. >> >> It can be fixed by setting flags again, but my question is why did it >> happen? >> >> Also my changes affect on behavior of fullscreen osg window. >> Before it was osg window is HWND_TOPMOST.(no window on top osg). And It >> is HWND_TOP with my changes (other windows can be on top osg window). >> >> May be I need to do this configurable, but I don't know. >> >> _______________________________________________ >> osg-submissions mailing list >> [email protected] >> >> http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph.org >> >> > > _______________________________________________ > osg-submissions mailing list > [email protected] > > http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph.org > >
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