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Signal Slot Python Qt

 
  • The following are 28 code examples for showing how to use PyQt4.QtCore.pyqtSlot.These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.
  • PyObject is passed as direct pointer, which allows to pass/return any Python object directly to/from a Qt slot that uses PyObject. as its argument/return value. All Qt QVariant types are implemented, PythonQt supports the complete Qt API for these objects.
  • I am trying to learn PyQt from rapid gui programming with python and qt and currently learning Signals and Slots. Below is a short snippet of my code: self.connect(self.dial, SIGNAL('valueChanged(int)'),self.spinbox.setValue) #1 self.connect(self.dial, SIGNAL('valueChanged(int)'),self.getValuedial) #2 self.connect(self.spinbox, SIGNAL('valueChanged(int)'),self.dial.setValue) self.connect.
SlotI was to lazy to take a look at the new-style

For instance, one event activates its slot and related subsequent events trigger another signal and the code in its slot to be executed. General understanding of the python programming language. No prior knowledge of QT is required. Connecting signals and slots. We use the QObject.connect method to connect signals and slots.

signal and slot support which was introduced in PyQt 4.5 until yesterday. I did know that there were something called new-styleSlot signals and slots but that was the end of the story. Now I have taken the time and I think it's a cleaner solution than the Signalold-style.
I'll just give you a short intro to whet your appetite, find all details here yourself.
Signal Slot Python QtThis is the old way of connecting a signal to a slot. To use the new-style support just replace line 11 with following code

Signal Slot Python Qt Python

Signal Slot Python Qt
The new-style support introduces an attribute with the same name as the signal, in this case clicked

Python Qthread Signal Slot

.
If you need to define your own signal you'll do something like this (off the top of my head):

Qt For Python Signal Slot


And the old way:

Signal Slot Python Qt 3.7


IMHO the

Python Qt Signal Slot

new-style

Signal Slot Python Qt Tutorial

support is more pythonic and you don't have to specify your signals as strings when connecting. If you use pydev (eclipse) you'll also have completion support for signals.