Return Values & lambda

[pradeepbpin]

I have a main program module that invokes an input dialog box via a
menu item. Now, the code for drawing and processing the input of
dialog box is in another module, say 'dialogs.py'. I connect the menu
item to this dialog box by a statement like,

manu_item.connect('activate', lambda a: dialogs.open_dilaog())

If this function open_dialog() returns a list of dialog inputs values,
how can I access those values in the main module ?

 

[Benjamin Kaplan]

I have a main program module that invokes an input dialog box via  a
menu item. Now, the code for drawing and processing the input of
dialog box is in another module, say 'dialogs.py'. I connect the menu
item to this dialog box by a statement like,

manu_item.connect('activate', lambda a: dialogs.open_dilaog())

If this function open_dialog() returns a list of dialog inputs values,
how can I access those values in the main module ?

You can't. The event handler just calls a method. It's expected that
you'll do everything you need in that. Make your own method for the
menu item that starts off by creating the dialog and then handles the
results.

 

[Rafe Kettler]

I have a main program module that invokes an input dialog box via  a
menu item. Now, the code for drawing and processing the input of
dialog box is in another module, say 'dialogs.py'. I connect the menu
item to this dialog box by a statement like,

manu_item.connect('activate', lambda a: dialogs.open_dilaog())

If this function open_dialog() returns a list of dialog inputs values,
how can I access those values in the main module ?

Moreover, I don't see why you need a lambda in this case. Why not just
pass the function itself?

Rafe

 

[Steven D'Aprano]

Moreover, I don't see why you need a lambda in this case. Why not just
pass the function itself?

My guess is that the callback function is passed a single argument, and
open_dialog doesn't take any arguments, hence the wrapper which just
ignores the argument and calls the function.

 

[Rafe Kettler]

My guess is that the callback function is passed a single argument, and
open_dialog doesn't take any arguments, hence the wrapper which just
ignores the argument and calls the function.

That would sound reasonable.

Rafe

 

[pradeepbpin]

My guess is that the callback function is passed a single argument, and
open_dialog doesn't take any arguments, hence the wrapper which just
ignores the argument and calls the function.

Thanks to all.

Pradeep