> What will be the difference here? How the control expand inside the dialog. The attribute CANVASBOX can revert that behavior if necessary.
> 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? Notice that there is no transparency between controls. The children that have a visual representation will actually be inside their rectangles. It is different than IupGLControls were the controls are drawn inside the IupGLCanvasBox, but not all controls have equivalent controls implemented in OpenGL. You can also use the OpenGL canvas and non OpenGL children in the same way. But recently we have a weird behavior with this configuration, because OpenGL does not handle the clipping of child windows very well when using a scrollbox. Anyway, you have to test what's the best configuration for you. And be aware that the more complex the mix is, the more weird things can happen. I think that starting with a IupBackgroundBox and using regular controls (not OpenGL) can be a good start. Best, Scuri Em sáb., 13 de jun. de 2020 às 18:43, Milind Gupta <milind.gu...@gmail.com> escreveu: > 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 >> > _______________________________________________ > Iup-users mailing list > Iup-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/iup-users >
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