Thanks a lot for help.. On Sat, Apr 11, 2009 at 6:27 PM, Dave Angel <da...@dejaviewphoto.com> wrote:
> > > Murali kumar wrote: > >> thanks a lot.. >> >> I think passing the main object only by reference.. so, this does not >> causes >> any overhead.. >> >> am i correct..? >> >> >> On Fri, Apr 10, 2009 at 4:02 PM, Dave Angel <da...@ieee.org> wrote: >> >> >> >>> Murali kumar wrote: >>> >>> >>> >>>> hi all.. >>>> I'm posted in a word doc becoz to add a image to explain my problem.. >>>> also I think gmail automatically scans for attachments.. >>>> >>>> anyway.. here's my problem...( see the image) >>>> >>>> http://www.2shared.com/file/5299759/45e4c614/load.html >>>> >>>> Using : Python 2.6 , wxPython 2.8.9 >>>> <....snip...> >>>> >>>> * I don’t know how to return config file or data to mainApp object when >>>> pressing load button. * >>>> >>>> >>>> * Is it easy to return filename only and load the file’s data into >>>> mainApp >>>> object in menu handler itself? * >>>> >>>> >>>> Please suggest me right direction.. and tell me how to do it? >>>> >>>> Usually where I can get these informations.. (suggest links and books..) >>>> >>>> >>>> Thanks for any advice.... >>>> >>>> >>>> >>>> >>>> >>> Most of the widget classes in your code should be derived classes, so >>> they >>> can hold extra instance data & event handlers and such. So that means >>> you >>> can have extra parameters on the constructor, besides the ones the base >>> class requires. Use one or more of those extra parameters to store your >>> own >>> information about the hierarchy. >>> >>> Simplest example is to add the app instance to each constructor. Then >>> each >>> widget object would know how to call back into the app to do some work, >>> or >>> to load data into a common place. >>> >>> DaveA >>> >>> -- >>> http://mail.python.org/mailman/listinfo/python-list >>> >>> >>> >> All objects are passed by reference in python. And storing it in each >> widget costs very little. Note that you can choose what object or objects >> should be used; I just mention the app as a choice that everyone will >> subclass, and that will generally have direct or indirect access to all >> widgets. >> >> > > -- > http://mail.python.org/mailman/listinfo/python-list >
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