从QDialog到QMainWindow之间的连接 - PyQt5
问题描述:
我已经创建了两个小部件(QMainWindow
作为win_one和QDialog
作为win_two)与qtdesigner
和PyQt5
。 从win_one开始,我打开win_two,填写lineEdit
,然后按OK将条目转移到显示在win_one中的label
。一切正常,除了两个问题:从QDialog到QMainWindow之间的连接 - PyQt5
- win_one窗口被打开
.showMaximized()
但经过填充的标签,窗口的尺寸变化。 - 从win_one按钮停止工作
front_win_one.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_win_one(object):
def setupUi(self, win_one):
win_one.setObjectName("win_one")
win_one.resize(1147, 234)
self.centralwidget = QtWidgets.QWidget(win_one)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(50, 50, 111, 51))
self.pushButton.setObjectName("pushButton")
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(40, 160, 131, 31))
self.label.setObjectName("label")
win_one.setCentralWidget(self.centralwidget)
self.retranslateUi(win_one)
QtCore.QMetaObject.connectSlotsByName(win_one)
def retranslateUi(self, win_one):
_translate = QtCore.QCoreApplication.translate
win_one.setWindowTitle(_translate("win_one", "MainWindow"))
self.pushButton.setText(_translate("win_one", "To qdialog"))
self.label.setText(_translate("win_one", "TextLabel"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
win_one = QtWidgets.QMainWindow()
ui = Ui_win_one()
ui.setupUi(win_one)
win_one.show()
sys.exit(app.exec_())
front_win_two.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_win_two(object):
def setupUi(self, win_two):
win_two.setObjectName("win_two")
win_two.resize(317, 278)
self.pushButton = QtWidgets.QPushButton(win_two)
self.pushButton.setGeometry(QtCore.QRect(40, 120, 121, 23))
self.pushButton.setObjectName("pushButton")
self.lineEdit = QtWidgets.QLineEdit(win_two)
self.lineEdit.setGeometry(QtCore.QRect(30, 50, 161, 21))
self.lineEdit.setObjectName("lineEdit")
self.retranslateUi(win_two)
QtCore.QMetaObject.connectSlotsByName(win_two)
def retranslateUi(self, win_two):
_translate = QtCore.QCoreApplication.translate
win_two.setWindowTitle(_translate("win_two", "Dialog"))
self.pushButton.setText(_translate("win_two", "OK"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
win_two = QtWidgets.QDialog()
ui = Ui_win_two()
ui.setupUi(win_two)
win_two.show()
sys.exit(app.exec_())
back.py
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QApplication, QWidget, QDialog
from front_win_1 import Ui_win_one
from front_win_2 import Ui_win_two
class win_two(QDialog, Ui_win_two):
def __init__(self, parent=None):
super(win_two, self).__init__(parent)
self.setupUi(self)
self.pushButton.clicked.connect(self.vers_main)
def vers_main(self):
entry = self.lineEdit.text()
win_one().label.setText(entry)
class win_one(QMainWindow, Ui_win_one):
def __init__(self, parent=None):
super(win_one, self).__init__(parent)
self.setupUi(dialog)
self.pushButton.clicked.connect(self.open_qdialog)
def open_qdialog(self):
self.dialog_win_2 = win_two()
self.dialog_win_2.show()
if __name__ == "__main__":
app = QApplication(sys.argv)
dialog = QMainWindow()
prog = win_one(dialog)
dialog.showMaximized()
sys.exit(app.exec_())
谢谢哟ü
答
你的代码有一些不同之处:
你不应该这样做
dialog = QMainWindow()
,因为它足以创建类win_one的目标,为此,你必须改变self.setupUi(dialog)
到self.setupUi(self)
。随着
win_one().label.setText(entry)
要创建一个新的对象,这是不必要的,除了你正在失去以前的对象,所以当你再次按下该窗口中的语句,QDialog
没有打开,一个简单的办法就是把它作为父win_one to win_two并使用self.parent()
函数来访问它。
上述所有在下面的部分实施:
class win_two(QDialog, Ui_win_two):
def __init__(self, parent=None):
super(win_two, self).__init__(parent)
self.setupUi(self)
self.pushButton.clicked.connect(self.vers_main)
def vers_main(self):
entry = self.lineEdit.text()
self.parent().label.setText(entry)
class win_one(QMainWindow, Ui_win_one):
def __init__(self, parent=None):
super(win_one, self).__init__(parent)
self.setupUi(self)
self.pushButton.clicked.connect(self.open_qdialog)
def open_qdialog(self):
self.dialog_win_2 = win_two(self)
self.dialog_win_2.show()
if __name__ == "__main__":
app = QApplication(sys.argv)
prog = win_one()
prog.showMaximized()
sys.exit(app.exec_())
注:我永远无法重现第一次的错误,只有第二个。
python27 or python3?不能用python35重现错误#1 – ingvar
我已经测试过这两个python,我不能重现第一个错误。 – eyllanesc