Hi, I need to use a graphicpath to draw bezier curves, but wxhaskell doesn't allow me to create a graphicscontext from a paint event.
The reason is the type of the function: graphicsContextCreate :: WindowDC a -> IO (GraphicsContext ()) while the paint event callback takes a DC () as argument, which is more general. It seem wxwidgets needs to know the type of the DC to create a graphicscontext. Also wxwidgets 2.8 doesn't have a function to create one from a memoryDC, but 3.0 has. One solution I came up with would be to replace DC () in the paint-event to MemoryDC (), since it's double buffered, and to PaintDC in a paint-raw event. This callback would also work with a more general function. Unfortunately it fails on Mac-OS since no memoryDc is used in the paint callback. And it still feels like a low level solution, it would be nicer to have a higher level API that can abstract away these problems. Maybe making a new paint callback that already includes the graphiccontext? Also creating a graphicspath from a haskell datatype would be nice. I am willing to help coding this functionality. Regards, Kristof Bastiaensen ------------------------------------------------------------------------------ Subversion Kills Productivity. Get off Subversion & Make the Move to Perforce. With Perforce, you get hassle-free workflows. Merge that actually works. Faster operations. Version large binaries. Built-in WAN optimization and the freedom to use Git, Perforce or both. Make the move to Perforce. http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk _______________________________________________ wxhaskell-devel mailing list wxhaskell-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wxhaskell-devel
