On Sun, 12 Sep 2010 06:11:09 +0200, Tom Ostojich <tostoj...@gmail.com> wrote:
> Hey all, > > Excuse me if I'm missing something obvious, since I'm new to both Haskell > programming and even newer yet to GUI programming, but I'm not sure on > how > to resolve this issue. > > Basically, I know that you can use the charKey function to determine > whether > or not a character key is pressed, but there appears to be no standard > library function for checking if a key and a modifier, such as the > Control > or Meta keys, are pressed as well. > > Is there a way to get something so that, once a <modifier> + <character > key> > combination is pressed to generate an appropriate event, so I can do > stuff > with that combination? I used the following function to handle keystrokes without modifier keys: > handleKeyboard :: Frame -> Var GameState -> EventKey -> IO () > handleKeyboard f game k = > if noModifierKeyPressed then > case keyKey k of > KeyLeft -> moveLeft f game KeyRight -> moveRight > f game KeyUp -> moveUp f game KeyDown -> > moveDown f game > _ -> propagateEvent > > else > propagateEvent > > where > noModifierKeyPressed = keyModifiers k == Modifiers False False > False False This handles keyboard events, see [0]; use the following to activate this: > set f [ on keyboard := handleKeyboard f game ] where f is the handle of frame. Regards, Henk-Jan van Tuyl [0] http://hackage.haskell.org/packages/archive/wx/latest/doc/html/Graphics-UI-WX-Events.html -- http://Van.Tuyl.eu/ http://members.chello.nl/hjgtuyl/tourdemonad.html -- ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ wxhaskell-users mailing list wxhaskell-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wxhaskell-users
