My bad, sorry. It took me a short while to see the misspelling. Got it working. I will be more careful about that in the future.
I move on to trying multiple objects and then adding "foreignObject" tag: val foreignObject : svgTag([X = string, Y = string, Width = string, Height = string] ++ typicalAttrs) an addition to the SVG.urs (cf. original at https://github.com/karsar/urweb-examples/blob/master/SVGTest/SVG.urs) , this require somehow to mix xsvg with xbody. Anything in particular that has to be taken into account when mixing this? /Jonas Mellin From: Ur [mailto:ur-boun...@impredicative.com] On Behalf Of Adam Chlipala Sent: den 17 april 2018 13:20 To: ur@impredicative.com Subject: Re: [Ur] UR/Web SVG (ffi) question For future questions, I think it would be good for you to explain what you understand from error messages, highlighting what additional understanding you need to diagnose the error. Here again the problem is a simple one that would be recognized as a bug in any programming language. Notice the difference in spellings of field names, between the "Have" and "Need" parts of the error message. On 04/17/2018 05:53 AM, Jonas Mellin wrote: ... <body onmousemove={fn ev => set x (ev.ScreenX,ev.SceenY)}> ... But I get: Can't unify record constructors Have: [ScreenX = int, ScreenY = int, ClientX = int, ClientY = int, CtrlKey = bool, ShiftKey = bool, AltKey = bool, MetaKey = bool, Button = mouseButton] Need: <UNIF:U140::{Type}> ++ [ScreenX = int, SceenY = int]
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