[wxhaskell-users] wxhaskell 0.7 arrowhead line styles, graph editing and misc questions

[Claus R. <cla...@ta...>]

I've just started playing around with wxhaskell a little bit
more seriously, and keep having problems finding my way
through the docs. For instance, how do I get arrowheads
at the end of my lines? How do I avoid my wxhaskell window
to flick to an interim size before settling on the intended size
(happens, e.g., with the bouncing ball demo)?

I'd like to hack on a little Petri net editor, and while that 
hasn't been too difficult so far, it sounds like a standard 
problem, so: is there a graph editor component for wxhaskell 
that I could build on? The wxwidgets pages mention an 
"Objects Graphic Library (OGL)" but I can't find any further 
info on this. The wxhaskell applications page mentions a 
NetEdit tool but the source doesn't seem to be available?

Also, there seem to be a few oddities with the demos on
a windows98 box (in addition to the window size problem): 

    - TimeFlows: only "Time" follows the mouse, the other
        words hang in the upper left corner
    - Process: responds only with error pings, whatever the
        input    

As for installation, I'd prefer to put the library in the ghc dirs 
instead of the system dirs. And, after registering wx and wxcore 
with ghc, I still have to give the -package wx flag when starting 
ghci. Can't ghc/ghci deduce that from the imports [ghc docs, 
4.8.1. Using a package: Some packages are automatically 
available: you don't need to specify any extra flags to use 
them (except in certain circumstances; see below). All the 
packages which contain hierarchical libraries fall into this 
category.]?

Oh, and does wxhaskell work with hugs? If yes, easily installable
packages to replace the aging HGL/SOEGraphics would be nice:-)

Cheers,
Claus