Got it. The behavior of a container inside a layout is not the same as a pure > canvas. >
What will be the difference here? I want to have a canvas where I want to also add controls inside like iupplot. I assume IupBackgroundbox would be perfect for it. What things should I watch out for differences with iupcanvas? Thanks, Milind Also you are adding an overhead to your application that will never be used > if it is just drawing in the canvas. > > > Continuing it seems that all functionality of IupCanvas, > IupBackgroundBox, IupGLCanvas can be provided by IupGLBackground. > > Sort of, now you are increasing the overhead by adding OpenGL. Even if > you don't use OpenGL, there will be calls to OpenGL functions so the > IupGLCanvas can be initialized. > > > So if I always use IupGLCanvasBox I should never need to use the others. > > The IupGLCanvasBox container is not implemented in the same way as the > IupGLBackgroundBox. The overhead of other libraries and dependencies is > increased. IupGLCanvasBox is inside IupGLControls that is dependent from > FTGL and Freetype. > > I would never recommend such simplification. > > Best, > Scuri > > > > > Em sáb., 13 de jun. de 2020 às 17:47, Milind Gupta <milind.gu...@gmail.com> > escreveu: > >> Thanks for the summary. I had read their documentation and what I >> understood and still seem to think from your summary is that: >> >> All functionality of IupCanvas can also be provided by IupBackgroundBox. >> It provides additional functionality of serving as a container. So in >> theory I can choose to always use IupBackgroundBox over IupCanvas. >> >> Continuing it seems that all functionality of IupCanvas, >> IupBackgroundBox, IupGLCanvas can be provided by IupGLBackground. >> >> Also it seems that IupGLCanvasBox can provide all functionality of all >> the above combined and add functionality to display the OpenGL based >> controls. >> >> So if I always use IupGLCanvasBox I should never need to use the others. >> This is what I understood from the documentation and from your summary as >> well. I think I am missing cases where say IupCanvas would be a better >> choice than IupGLCanvasBox. What are those cases? >> >> Thanks, >> Milind >> >> On Sat, Jun 13, 2020 at 11:39 AM Antonio Scuri <antonio.sc...@gmail.com> >> wrote: >> >>> Hi, >>> >>> You got to take a look at their documentation. But here is a quick >>> glimpse: >>> >>> * IupCanvas - the main control, where you can draw, all others inherit >>> from this one >>> * IupBackgroundBox - inherits from IupCanvas, but it is a container. So >>> it is a container where you can draw or simply control the background color >>> below other controls. >>> * IupGLCanvas - inherits from IupCanvas, but adds OpenGL support. >>> * IupGLBackground - inherits from IupGLCanvas, but it is a container >>> like IupBackgroundBox. Same purpose but with OpenGL support. >>> * IupGLCanvasBox - same as IupGLBackground, but it is designed for being >>> the parent of a set of OpenGL based controls in the IupGLControls library. >>> It has a more complex implementation than IupGLBackground so we decided to >>> leave it as a separate control >>> * IupGLSubCanvas - a virtual canvas used for the OpenGL based controls. >>> It is not actually a canvas, it is a region inside the IupGLCanvasBox used >>> as base for the IupGLControls library elements. >>> >>> Best, >>> Scuri >>> >>> >>> >>> >>> Em sáb., 13 de jun. de 2020 às 01:09, Milind Gupta < >>> milind.gu...@gmail.com> escreveu: >>> >>>> Hi Antonio, >>>> I am a little confused about all the canvas options in IUP. I >>>> found these: >>>> >>>> * iupcanvas >>>> * IupBackgroundBox >>>> * IupGLCanvas >>>> * IupGLBackground >>>> * IupGLCanvasBox >>>> * IupGLSubCanvas >>>> >>>> All of them can act like a canvas I believe. What are the specific >>>> instances when each of them should be used? >>>> >>>> Regards, >>>> Milind >>>> _______________________________________________ >>>> Iup-users mailing list >>>> Iup-users@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/iup-users >>>> >>> _______________________________________________ >>> Iup-users mailing list >>> Iup-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/iup-users >>> >> _______________________________________________ >> Iup-users mailing list >> Iup-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/iup-users >> > _______________________________________________ > Iup-users mailing list > Iup-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/iup-users >
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