[Gnumed-devel] wxEvents question

[Sebastian Hilbert]

I would like to extend the functionality of gmPhrasewheel in a way that when 
an item has been selected certain actions are initiated.

Therefore I looked at the wx event handling and I am totally lost.
One is supposed to define an custom event. I did this as described on this 
page:
http://wiki.wxpython.org/index.cgi/CustomEventClasses

but I am not sure where to add the code. Here is what I did.
1.) modified gmPhraseWheel 
        
        def __on_enter (self):
                """Called when the user pressed <ENTER>.

                FIXME: this might be exploitable for some nice statistics ...
                """
                # if we have a pick list
                if self.__picklist_visible:
                        # tell the input field about it
                        self.on_list_item_selected()
                else:
                        self.propagate_select_evt()

        I basically added the part after else:

2.)     #--------------------------------------------------------
        # custom event handler 
        #--------------------------------------------------------
        def propagate_select_evt (self):
                """emits an custom event to enable autoupdate of dependend 
controls based on
                 selected list item""" 
                wxPostEvent(self, ItemSelectedEvent())

3.) added in gmPhraseWheel and/or gmLabJournal
        wxEVT_ITEM_SELECTED = wxNewEventType()

        #============================================================
        def EVT_ITEM_SELECTED(win, func):
                win.Connect(-1, -1, wxEVT_ITEM_SELECTED, func)
        #============================================================
        class ItemSelectedEvent(wxPyCommandEvent):
                def __init__(self):
                        wxPyCommandEvent.__init__(self)
                        self.SetEventType(wxEVT_ITEM_SELECTED)

        I probably screwed up this part. Where does one add 3.) in 
gmPhrasewheel or 
in gmLabJournal?

It would be great if someone could fix this. I don't know where to look. Once 
I have a working example I could add this event to many more places in my 
code.

You can take a look at gmLabJournal. It's in CVS. It's very incomplete though 
since I spend way too much time trying to figure out the basics.

-- 
Sebastian Hilbert 
Leipzig / Germany
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