Re: [Jython-users] A big problem for me!

[cindy <inf...@pi...>]

The code is not exactly the same as the book.
In Sketcher.py I have-

import java
from SketchFrame import *

class Sketcher:
      def __init__(self):
            true = 1
            title = 'sketcher'
            self.aSketchFrame = SketchFrame(title)

            self.theKit = self.aSkechFrame.getToolkit()
            self.wndSize = setBounds(self.wndSize.width/4,
                                                     self.wndSize.height/4,
                                                     self.wndSize.width/2,
                                                     self.wndSize.height/2)
             self.aSketchFrame.setVisible(true)
if __name__ == '__maine__'
   aSketcher = Sketcher()

Here is the code for SketchFrame.

from javax import swing
import java
import java.awt.event

class SketchFrame(swing.JFrame):
        def __init__(self, title):
              // some code left out - it build a menu bar
             enableEvents(java.awt.event.WindowEvent.WINDOW_EVENT_MASK)

        def processWindowEvent(self, event):
             if (event.getID() == java.awt.event.WindowEvent.WINDOW.CLOSE):
                  java.awt.event.dispose()         # not sure if this works
yet. I haven't gotten to this point.
                  java.awt.System.exit(0)
             swing.JFrame.super.processWindowEvent(event)





> On Tue, Apr 03, 2001 at 10:21:29PM -0400, cindy wrote:
> | Hi again,
> | If I may reiterate what you said to help me understand.If module Foo.py
> | has the statement "enableEvents(AWTEvent.WINDOW_EVENT_MASK)" and
> | module Bar.py does a composite on module Foo.py, then I have to pass
> | the instance name to module Foo.py to qualify the method enableEvents()
> | thus
> | "instanceName.enableEvents(). If this is so how do I pass the instance
> | name
> | in the creation of the instance?  If I have the statement in Bar.py
> | "self.myInstance = Foo().
> | Thanks.
> | Wayne
>
> I'm not sure if I completely understand your goals and your design.
> Also, I think you mixed up modules and classes in your description
> above.
>
> I just read the docs for java.awt.Component.enableEvents( long ) and
> noticed the following :
>
>         This method only needs to be invoked by subclasses of
>         Component which desire to have the specified event types
>         delivered to processEvent regardless of whether or not a
>         listener is registered.
>
> Are you trying to create a subclass of Component that needs to receive
> events even if no listeners are registered?  Could you post some code
> showing what it is you are currently trying to do?
>
> If you have a class Foo that inherits from component, you could do
> something like the following, but I'm not sure if it is what you are
> looking for.
>
> ---- in some .py file ------
> import java
>
> class Foo( java.awt.Component ) :
>     def __init__( self ) :
>         # note that 'self' now refers the the instance of 'Foo' and
>         # therefore is-a instance of 'Component'
>         self.enableEvents( java.awt.AWTEvent.WINDOW_EVENT_MASK )
>
>     def processEvent( self , event ) :
>         """
>         @sig protected void processEvent( java.awt.AWTEvent event )
>
>         this method must be defined or you will end up with errors
>         when the event dispatcher tries to call it
>         """
>
>         print "Found an event!"
>         print event
>
> HTH,
> -D
>
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