installEventFilter
期望A
QObject
,在你的情况下
MainWindow_EXEC
不是。
如果您使用的是qt设计器设计,建议创建一个继承自相应小部件的新类,并使用qt设计器提供的类填充该类,如下所示:
import sys
from PyQt5 import QtCore, QtWidgets
from view_cortes2 import Ui_cortes2
class MainWindow(QtWidgets.QMainWindow, Ui_cortes2):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self.flag = 0
self.ledit_corteA.installEventFilter(self)
self.ledit_corteB.installEventFilter(self)
def eventFilter(self, source, event):
if event.type() == QtCore.QEvent.FocusIn and source is self.ledit_corteA:
print("A")
self.flag = 0
if event.type() == QtCore.QEvent.FocusIn and source is self.ledit_corteB:
print("B")
self.flag = 1
return super(MainWindow, self).eventFilter(source, event)
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
参考文献: