pyqtsignal使用细节

下面包含了对pyqtSignal的基础使用，包括多参数
因为较为简单，就当作参考书吧~~
然后信号可以接收多个信号源哦~下面也有举例 （mousePressEvent 和 buttonClicked2）

import sys

from PyQt5.QtWidgets import QWidget, QPushButton, QApplication, QMainWindow, QHBoxLayout

from PyQt5.QtCore import Qt, pyqtSignal

class CMainWindow(QMainWindow):
signalTest = pyqtSignal()
signalTest1 = pyqtSignal(str)
signalTest2 = pyqtSignal(float, float)

def __init__(self):
super().__init__()
# 确认PushButton设置
btn = QPushButton("无参信号")
btn.clicked.connect(self.buttonClicked)
btn1 = QPushButton("单参信号")
btn1.clicked.connect(self.buttonClicked1)
btn2 = QPushButton('双参信号')
btn2.clicked.connect(self.buttonClicked2)
hBox = QHBoxLayout()
hBox.addStretch(1)
hBox.addWidget(btn)
hBox.addWidget(btn1)
hBox.addWidget(btn2)
widget = QWidget()
self.setCentralWidget(widget)
widget.setLayout(hBox)
self.signalTest.connect(self.signalNone)
self.signalTest1.connect(self.signalOne)
self.signalTest2.connect(self.signalTwo)
self.setWindowTitle('pysignal的使用')
self.show()

def signalNone(self):
print("无参信号，传来的信息")

def signalOne(self, arg1):
print("单参信号，传来的信息:", arg1)

def signalTwo(self, arg1, arg2):
print("双参信号，传来的信息:", arg1, arg2)

def mousePressEvent(self, event):
self.signalTest2.emit(event.pos().x(), event.pos().y())

def buttonClicked(self):
self.signalTest.emit()

def buttonClicked1(self):
self.signalTest1.emit("我是单参信号传来的")

def buttonClicked2(self):
self.signalTest2.emit(0, 0)

def keyPressEvent(self, e):
if e.key() == Qt.Key_Escape:
self.close()

if __name__ == '__main__':
app = QApplication(sys.argv)
MainWindow = CMainWindow()
sys.exit(app.exec_())

标签：__,pyqtsignal,self,pyqtSignal,细节,connect,使用,def,hBox
来源： https://www.cnblogs.com/hongshi/p/16581639.html