PYGTK: How can one add an argument to a callback?

[Daniel B. Thurman]

The following code:

[...]
tvc.set_cell_data_func(cp, self.on_file_pixbuf)
[...]
def on_file_pixbuf1(self, column, cell, model, iter):
    <code>
[...]

works fine, but what if I need to add another
argument to "self.on_file_pixbuf" without destroying
the arguments already supplied by the constructor?

For example, I want to do the following:

tvc.set_cell_data_func(cp, self.on_file_pixbuf1(t))

where 't' is another argument I wish to pass in
addition to that provided by the cell so that the
method results as:

def on_file_pixbuf1(self, column, cell, model, iter, t):
    <code>

Thanks!
Dan

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[Lars Wirzenius-5]

On Tue, 2009-11-03 at 09:46 -0800, Daniel B. Thurman wrote:

> For example, I want to do the following:
>
> tvc.set_cell_data_func(cp, self.on_file_pixbuf1(t))
>
> where 't' is another argument I wish to pass in
> addition to that provided by the cell so that the
> method results as:
>
> def on_file_pixbuf1(self, column, cell, model, iter, t):
>     <code>

You can create a new function:

        t = something
       
        def helper(column, cell, model, iter):
            self.on_file_pixbuf1(column, cell, model, iter, t)
       
        tvc.set_cell_data_func(cp, helper)

(Untested code, but you should get the idea.)


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[Daniel B. Thurman]

On 11/03/2009 10:35 AM, Lars Wirzenius wrote:

> On Tue, 2009-11-03 at 09:46 -0800, Daniel B. Thurman wrote:
>  
>> For example, I want to do the following:
>>
>> tvc.set_cell_data_func(cp, self.on_file_pixbuf1(t))
>>
>> where 't' is another argument I wish to pass in
>> addition to that provided by the cell so that the
>> method results as:
>>
>> def on_file_pixbuf1(self, column, cell, model, iter, t):
>>     <code>
>>    
> You can create a new function:
>
>         t = something
>        
>         def helper(column, cell, model, iter):
>             self.on_file_pixbuf1(column, cell, model, iter, t)
>        
>         tvc.set_cell_data_func(cp, helper)
>
> (Untested code, but you should get the idea.)
>
>
> _______________________________________________
> gtk-app-devel-list mailing list
> gtk-app-devel-list@...
> http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
>  

Awesome!  Thanks!

BTW: Assuming that you are the owner of this forum, I tried to
register on your GTK+ Forum, but apparently, I was not able to
obtain the email sent to me at the email provided and lost it due
to email spam blocking.

Is there anyway to resend the GTK+ Forum email so that I could
proceed to log into the forum, since I have added the forum's email
address to my email whitelist?

Thanks again!
Dan

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[John Finlay]

>
> The following code:
>
> [...]
> tvc.set_cell_data_func(cp, self.on_file_pixbuf)
> [...]
> def on_file_pixbuf1(self, column, cell, model, iter):
>     <code>
> [...]
>
> works fine, but what if I need to add another
> argument to "self.on_file_pixbuf" without destroying
> the arguments already supplied by the constructor?
>
> For example, I want to do the following:
>
> tvc.set_cell_data_func(cp, self.on_file_pixbuf1(t))
>
> where 't' is another argument I wish to pass in
> addition to that provided by the cell so that the
> method results as:
>
> def on_file_pixbuf1(self, column, cell, model, iter, t):
>     <code>

Make the call like:

tvc.set_cell_data_func(cp, self.on_file_pixbuf, t)

for callback like:

def on_file_pixbuf1(self, column, cell, model, iter, t):

John
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