2. [Python] pyqtSignal

signal 순서

1. 선언

2. emit 

3. connect

 

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *

class signal_test(QObject):
    signal1 = pyqtSignal()

    def run(self):
        self.signal1.emit()

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        mainsignal = signal_test()
        mainsignal.signal1.connect(self.signal1_emit)
        mainsignal.run()

    @pyqtSlot()
    def signal1_emit(self):
        print("signal test")

app = QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec_()

결과

 

예제 소스

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *


class MySignal(QObject):
    signal1 = pyqtSignal()
    signal2 = pyqtSignal(int, int)
    signal3 = pyqtSignal(name="testSignal")
    signal4 = pyqtSignal()
    signal5 = pyqtSignal(int)
    signal6 = pyqtSignal(str)

    x = 1234
    y = 'test'

    def run(self):
        self.signal1.emit()
        self.signal2.emit(1, 2)
        self.testSignal.emit()
        self.signal4.emit()
        self.signal5.emit(self.x)
        self.signal6.emit('TEST소문자={}'.format(self.y))

class MyWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        mysignal = MySignal()
        mysignal.signal1.connect(self.signal1_emitted)
        mysignal.signal2.connect(self.signal2_emitted)
        mysignal.signal3.connect(self.signal3_emitted)
        mysignal.signal4.connect(lambda : print("signal4 emitted"))
        mysignal.signal5.connect(self.signal5_emitted)
        mysignal.signal6.connect(self.signal6_emitted)
        mysignal.run()

    @pyqtSlot()
    def signal1_emitted(self):
        print("signal1 emitted")

    @pyqtSlot(int, int)
    def signal2_emitted(self, arg1, arg2):
        print("signal2 emitted", arg1, arg2)

    @pyqtSlot()
    def signal3_emitted(self):
        print("signal3 emitted")

    @pyqtSlot(int)
    def signal5_emitted(self, arg1):
        print(arg1)

    @pyqtSlot(str)
    def signal6_emitted(self, arg1):
        print(arg1)

app = QApplication(sys.argv)
window = MyWindow()
window.show()
app.exec_()