William Gill wrote:
> I am placing radiobuttons in a 4 X 4 matrix (using loops) and keep
> references to them in a 2 dimensional list ( rBtns[r][c] ). It works
> fine, and I can even make it so only one button per column can be
> selected, by assigning each column to an intVar. In many languages a
> radiobutton has a property that can be directly read to see if it is
> selected on unselected. Tkinter radiobuttons don't seem to have any
> such property. Is there any way to look (via the script not the screen)
> to determine if it is selected?, or can this only be achieved via
> control variables?
You can either write a little helper function
def selected(rbn):
return rbn.getvar(rbn["variable"]) == rbn["value"]
or use a custom subclass of Tkinter.Radiobutton with a 'selected' attribute:
class Radiobutton(Tkinter.Radiobutton):
def __getattr__(self, name):
if name == "selected":
return self.getvar(self["variable"]) == self["value"]
raise AttributeError
Peter
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