Python 条形码扫描器切换到下一行编辑
我使用USB条形码扫描仪设置Qt lineEdit字段的文本以扫描生产订单号,我的问题是扫描后窗口关闭,而不是切换到下一个lineEdit_2以扫描项目号。如何设置lineEdit以将crusor移动到下一个lineEdit_2并准备进行下一次扫描Python 条形码扫描器切换到下一行编辑,python,pyqt5,barcode-scanner,Python,Pyqt5,Barcode Scanner,我使用USB条形码扫描仪设置Qt lineEdit字段的文本以扫描生产订单号,我的问题是扫描后窗口关闭,而不是切换到下一个lineEdit_2以扫描项目号。如何设置lineEdit以将crusor移动到下一个lineEdit_2并准备进行下一次扫描 from PyQt5 import QtCore, QtGui, QtWidgets class Ui_Dialog(object): def setupUi(self, Dialog): Dialog.setObject
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(400, 300)
self.buttonBox = QtWidgets.QDialogButtonBox(Dialog)
self.buttonBox.setGeometry(QtCore.QRect(290, 20, 81, 241))
self.buttonBox.setOrientation(QtCore.Qt.Vertical)
self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
self.buttonBox.setObjectName("buttonBox")
self.lineEdit = QtWidgets.QLineEdit(Dialog)
self.lineEdit.setGeometry(QtCore.QRect(50, 50, 113, 22))
self.lineEdit.setObjectName("lineEdit")
self.lineEdit_2 = QtWidgets.QLineEdit(Dialog)
self.lineEdit_2.setGeometry(QtCore.QRect(50, 120, 113, 22))
self.lineEdit_2.setObjectName("lineEdit_2")
self.lineEdit_3 = QtWidgets.QLineEdit(Dialog)
self.lineEdit_3.setGeometry(QtCore.QRect(50, 200, 113, 22))
self.lineEdit_3.setObjectName("lineEdit_3")
self.retranslateUi(Dialog)
self.buttonBox.accepted.connect(Dialog.accept)
self.buttonBox.rejected.connect(Dialog.reject)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Dialog = QtWidgets.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
Dialog.show()
sys.exit(app.exec_())
默认情况下,当单击enter键且QDialog具有焦点时,QPushButton的按钮被按下,该单击会导致发出拒绝或接受的信号,从而关闭窗口,这由默认和自动默认属性处理,因此第一件事是覆盖该行为 另一方面,按enter键不会移动到另一个QLineEdit,在这种情况下,必须听该键并使用FocusTextPrevChild移动焦点 最后,不应修改QtDesigner生成的代码,因此我将假设您显示的代码在gui.py文件中,并且我将在main.py中实现逻辑:
import sys
from PyQt5 import QtCore, QtWidgets
from gui import Ui_Dialog
class Dialog(QtWidgets.QDialog, Ui_Dialog):
def __init__(self, parent=None):
super().__init__(parent)
self.setupUi(self)
self.show()
for btn in self.buttonBox.buttons():
btn.setDefault(False)
btn.setAutoDefault(False)
btn.setFocusPolicy(QtCore.Qt.NoFocus)
def keyPressEvent(self, event):
if event.key() in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Return):
self.focusNextPrevChild(True)
super().keyPressEvent(event)
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
w = Dialog()
w.show()
sys.exit(app.exec_())
这太完美了,谢谢@eyllanesc提供的信息