(pyqt) Parameters when connecting a signal to a method?

[exhuma.twn]

Some code:

--

def foobar(w):
   print w

QtCore.QObject,connect( my_line_edit,
QtCore.SIGNAL(returnPressed()), foobar )

--


How can I get this to work so foobar prints out the sender of the
signal (i.e. my_line_edit)?

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Re: (pyqt) Parameters when connecting a signal to a method?

[Diez B. Roggisch]

exhuma.twn wrote:

 Some code:
 
 --
 
 def foobar(w):
print w
 
 QtCore.QObject,connect( my_line_edit,
 QtCore.SIGNAL(returnPressed()), foobar )
 
 --
 
 
 How can I get this to work so foobar prints out the sender of the
 signal (i.e. my_line_edit)?

I _think_ there is a way to get the signals sender in Qt itself. But I'm
unsure how to get that.

Alternatively, you can use a closure to create a reference:

def foobar(source, w):
   print w

def slotgen(source, slot):
def _slot(*args):
return slot(*((source,) + args))
return _slot

my_slot = slotgen(my_line_edit, foobar)

QtCore.QObject,connect( my_line_edit,
QtCore.SIGNAL(returnPressed()), my_slot )

However, be careful to keep a reference to my_slot around! Otherwise, it
will be garbage collected!

diez
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Re: (pyqt) Parameters when connecting a signal to a method?

[exhuma.twn]

On Sep 24, 4:47 pm, Diez B. Roggisch [EMAIL PROTECTED] wrote:
 exhuma.twn wrote:
  Some code:

  --

  def foobar(w):
 print w

  QtCore.QObject,connect( my_line_edit,
  QtCore.SIGNAL(returnPressed()), foobar )

  --

  How can I get this to work so foobar prints out the sender of the
  signal (i.e. my_line_edit)?

 I _think_ there is a way to get the signals sender in Qt itself. But I'm
 unsure how to get that.

 Alternatively, you can use a closure to create a reference:

 def foobar(source, w):
print w

 def slotgen(source, slot):
 def _slot(*args):
 return slot(*((source,) + args))
 return _slot

 my_slot = slotgen(my_line_edit, foobar)

 QtCore.QObject,connect( my_line_edit,
 QtCore.SIGNAL(returnPressed()), my_slot )

 However, be careful to keep a reference to my_slot around! Otherwise, it
 will be garbage collected!

 diez

Thanks diez. This works :)
Although, I still have to digest *what* this closure does, but I will
leave this as an exercise to myself. ;)

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