[IronPython] IronPython Silverlight 4 debugging... [No errors just not working]

[Andrew Evans]

Ok well it doesn't look like my event handlers are even being called

this is what I did

    def KeyDown_Control(self, s, e):
        if e.Key == Key.Right:
            print "Right Arrow"
            #self.canvas.SetLeft(self.ship, self.canvas.GetLeft(self.ship) +
velocity)
        elif e.Key == Key.Left:
            print "Left Arrow"
            #self.canvas.SetLeft(self.ship, self.canvas.GetLeft(self.ship) -
velocity)
        elif e.Key == Key.Up:
            print "Up Arrow"
            #self.canvas.SetTop(self.ship, self.canvas.GetTop(self.ship) -
velocity)
        elif e.Key == Key.Down:
            print "Down Arrow"
            #self.canvas.SetTop(self.ship, self.canvas.GetTop(self.ship) +
velocity)

So assuming that's the issue which is likely than it would be this line

# This line should be something different Not sure what to use instead of
this
        self.ship.KeyDown += KeyEventHandler(self.KeyDown_Control)

Which I assumed all this time

Any ideas what it should be?

*cheers

Andrew

On Wed, Aug 11, 2010 at 9:37 AM, Michael Foord <fuzzyman at voidspace.org.uk>wrote:

>  On 11/08/2010 17:34, Andrew Evans wrote:
>
> Hello I am running IronPython 2.7A and trying to debug a Silverlight app. I
> am trying to figure out why my ship doesn't move when I press the Arrow
> keys.
>
> here is the complete source minus most imports :D
>
> Put some debugging in (append text to an html div) to see if your event
> handlers are being fired. That would my first step.
>
> Michael
>
>
> Any ideas
>
> from System.Windows.Input import *
>
>
> velocity = 10
>
> class Gui():
>     def __init__(self):
>
>         self.grid = Grid()
>         self.canvas = Canvas(Background = SolidColorBrush(Colors.White))
>         self.canvas.Width = 640
>         self.canvas.Height = 432
>         self.bgImage = Image(
>             Source = BitmapImage(Uri("images/background.jpg",
> UriKind.Relative))
>             )
>         self.canvas.SetTop(self.bgImage, 132)
>         self.canvas.SetLeft(self.bgImage, 0)
> #        self.textblock = TextBlock()
> ##        self.textblock.FontSize = 24
> ##        self.textblock.Text = 'This Really Works!!'
> ##        self.canvas.Children.Add(self.textblock)
>
>         self.ship = Image(
>             Source = BitmapImage(Uri("images/ship.png", UriKind.Relative))
>             )
>
>         self.canvas.SetTop(self.ship, 75)
>         self.canvas.SetLeft(self.ship, 25)
>
>         CompositionTarget.Rendering += EventHandler(self.ShootBG)
> ##        self.GenerateStarField(350)
>
>         self.canvas.Children.Add(self.bgImage)
>
>         self.canvas.Children.Add(self.ship)
>         self.grid.Children.Add(self.canvas)
>         Application.Current.RootVisual = self.grid
>         # This line should be something different Not sure what to use
> instead of this
>         self.ship.KeyDown += KeyEventHandler(self.KeyDown_Control)
>
>
>     def ShootBG(self, s, e):
>         self.canvas.SetLeft(self.bgImage, self.canvas.GetLeft(self.bgImage)
> - 1)
>         if self.canvas.GetLeft(self.bgImage) < -2110:
>             self.canvas.SetLeft(self.bgImage, 0)
>
>     def KeyDown_Control(self, s, e):
>         if e.Key == Key.Right:
>             self.canvas.SetLeft(self.ship, self.canvas.GetLeft(self.ship) +
> velocity)
>         elif e.Key == Key.Left:
>             self.canvas.SetLeft(self.ship, self.canvas.GetLeft(self.ship) -
> velocity)
>         elif e.Key == Key.Up:
>             self.canvas.SetTop(self.ship, self.canvas.GetTop(self.ship) -
> velocity)
>         elif e.Key == Key.Down:
>             self.canvas.SetTop(self.ship, self.canvas.GetTop(self.ship) +
> velocity)
>
> gui = Gui()
> gui
>
>
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