Am 17.03.2013 22:17, Chris Russ wrote: >>> Upon further investigation, the documentation says that the only way to get >>> transparency (and 100% transparency at that) is with an Fl_Pixmap (say, a >>> GIF file), and that is definitely NOT RGB. Even so, would that work where >>> this fails, albeit without the kinds of shadows I'm trying to cast in the >>> PNGs? >> >> That's not up-to-date anymore, could you give a pointer where >> you read it exactly? This documentation should better be updated, >> but as I wrote before, the current state of image drawing was not >> intended and should be more consistent across platforms. However, >> it's not as easy to do it as it might seem, and somebody has to >> do it. Patches always welcome... >> > > Here's the link to the documentation that says it: > > http://fltk.org/doc-1.3/drawing.html > > Search on the page for the word "transparency"...
Thanks for the link. I'll try to improve this later. > The documentation also strongly discourages people from using the ->draw() > method of widgets. Yes, and it is important not to call draw() from any callback, be it a widget's callback or a timer update or any other. However, if you are already within a draw() method of one widget, then it is allowed and useful to use other widgets' draw() methods, e.g. for a group or a complicated widget layout (draw the background image, then a graph, then another Fl_Box with a bargraph on top of it, similar to your case). > My problem is solved, thank you. But the docs are, shall we say, confusing. Yep, you're right. The entire chapter needs some improvements and probably some examples. I'll see what I can do when I can find the time. Thanks for the heads-up. Albrecht _______________________________________________ fltk mailing list fltk@easysw.com http://lists.easysw.com/mailman/listinfo/fltk
