通过输入键调用功能

Question

当qpushbutton（" click"）按Enter键盘键按下QPUSHBUTTON（" click"）时，我该如何制作（on_click）？它仅与Mouse_Click

互动

import sys
from PyQt5.QtWidgets import *
class Example(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
    def initUI(self):
        self.label = QLabel("",self)
        self.label.move(100, 100)
        self.button = QPushButton('click', self)
        self.button.move(100, 50)
        self.button.clicked.connect(self.on_click)
        self.setGeometry(500, 150, 200, 200)
        self.show()    
    def on_click(self):
        self.label.setText("Hello")
if __name__ == '__main__':
   app = QApplication(sys.argv)
   ex = Example()
   sys.exit(app.exec_())

Answer 1

您必须覆盖keypressevent方法：

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
class Example(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
    def initUI(self):
        self.label = QLabel("",self)
        self.label.move(100, 100)
        self.button = QPushButton('click', self)
        self.button.move(100, 50)
        self.button.clicked.connect(self.on_click)
        self.setGeometry(500, 150, 200, 200)
        self.show()    
    def on_click(self):
        self.label.setText("Hello")
    def keyPressEvent(self, event):
        if event.key() == Qt.Key_Return:
            self.on_click()

if __name__ == '__main__':
   app = QApplication(sys.argv)
   ex = Example()
   sys.exit(app.exec_())

Answer 2

我找到了一个解决方案：keypressevent（）方法不适用于pyqt5/python 3 。

您需要在超级类中覆盖功能。

MainWindow.keyPressEvent = self.keyPressEvent