[pygtk] check button state continuously

[Karsten Henke]

Hello,

i try to write a button callback, that repeatedly calls a function, as
long as the button is pressed. For security reasons i don't want to wait
for the released signal, but check the button state continuously. My
code would look like this:

while (button_is_pressed):
    move_robot()

Unfortunately i cannot find a according variable in pygtk. Is there a
variable that holds the button state or what would be the gtk way to do
this?

Tanks in advance,
Karsten Henke