PyQT4：从现有的python程序获取来自Ui的文本
我正在尝试为我创建的现有python程序创建一个UI。 在小部件上，我有两个文本框（QlineEdit），我想用它来获取程序使用的信息，一个按钮和一个用于保存程序输出的文本浏览器。
我偶然发现了使用自制软件安装的PyQT4和QT Creator。 我创建了UI并将其从mainwindow.ui转换为mainwindow.py，现在我试图弄清楚如何从UI文本框中获取文本输入并让程序使用它。
我不知道如何从文本框中提取文本（QlineEdit）并将它们存储在程序可以使用的变量（字符串）中。
根据我的理解，我应该创建一个新的.py文件并导入mainwindow以及PyQT4.QtCore和PyQT4.QtGui。 我不知道该从哪里出发，所以任何见解都会有所帮助。
另外，如何将程序打印到textbrowser？
也许我的方法有缺陷，我应该围绕mainwindow.py文件重建我的程序？
我很抱歉，如果这是所有无关紧要的信息，但我从未使用PyQT或Qt创建者。
这里是我从转换后的.ui到.py的代码：
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'mainwindow.ui'
#
# Created: Wed Aug 13 15:25:22 2014
# by: PyQt4 UI code generator 4.11.1
#
# WARNING! All changes made in this file will be lost!
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(480, 385)
MainWindow.setWindowOpacity(1.0)
self.centralWidget = QtGui.QWidget(MainWindow)
self.centralWidget.setObjectName(_fromUtf8("centralWidget"))
self.textBrowser = QtGui.QTextBrowser(self.centralWidget)
self.textBrowser.setGeometry(QtCore.QRect(100, 120, 256, 192))
self.textBrowser.setObjectName(_fromUtf8("textBrowser"))
self.widget = QtGui.QWidget(self.centralWidget)
self.widget.setGeometry(QtCore.QRect(150, 10, 156, 97))
self.widget.setObjectName(_fromUtf8("widget"))
self.verticalLayout_2 = QtGui.QVBoxLayout(self.widget)
self.verticalLayout_2.setMargin(0)
self.verticalLayout_2.setObjectName(_fromUtf8("verticalLayout_2"))
self.verticalLayout = QtGui.QVBoxLayout()
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.lineEdit = QtGui.QLineEdit(self.widget)
self.lineEdit.setObjectName(_fromUtf8("lineEdit"))
self.verticalLayout.addWidget(self.lineEdit)
self.lineEdit_2 = QtGui.QLineEdit(self.widget)
self.lineEdit_2.setObjectName(_fromUtf8("lineEdit_2"))
self.verticalLayout.addWidget(self.lineEdit_2)
self.verticalLayout_2.addLayout(self.verticalLayout)
self.pushButton = QtGui.QPushButton(self.widget)
self.pushButton.setObjectName(_fromUtf8("pushButton"))
self.verticalLayout_2.addWidget(self.pushButton)
MainWindow.setCentralWidget(self.centralWidget)
self.menuBar = QtGui.QMenuBar(MainWindow)
self.menuBar.setGeometry(QtCore.QRect(0, 0, 480, 22))
self.menuBar.setObjectName(_fromUtf8("menuBar"))
MainWindow.setMenuBar(self.menuBar)
self.mainToolBar = QtGui.QToolBar(MainWindow)
self.mainToolBar.setObjectName(_fromUtf8("mainToolBar"))
MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
self.statusBar = QtGui.QStatusBar(MainWindow)
self.statusBar.setObjectName(_fromUtf8("statusBar"))
MainWindow.setStatusBar(self.statusBar)
self.retranslateUi(MainWindow)
QtCore.QObject.connect(self.lineEdit, QtCore.SIGNAL(_fromUtf8("textEdited(QString)")), self.lineEdit.setText)
QtCore.QObject.connect(self.lineEdit_2, QtCore.SIGNAL(_fromUtf8("textEdited(QString)")), self.lineEdit_2.setText)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
self.lineEdit.setPlaceholderText(_translate("MainWindow", "Enter Case Number", None))
self.lineEdit_2.setPlaceholderText(_translate("MainWindow", "Number of cases", None))
self.pushButton.setText(_translate("MainWindow", "Submit", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
MainWindow = QtGui.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
任何信息都有帮助 谢谢
用户界面工作的方式是用户界面构成程序的主循环。 这里mainwindow.py是你的主循环。 您可以导入您在程序中创建的类（可以称之为code.py），也可以将该代码粘贴到mainwindow.py中。 然后在按下按钮或其他类型的事件时，可以调用执行code.py 主代码的函数
要回答关于如何使用文本和打印到textbrowser的其他问题，请尝试如下所示：
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'mainwindow.ui'
#
# Created: Wed Aug 13 15:25:22 2014
# by: PyQt4 UI code generator 4.11.1
#
# WARNING! All changes made in this file will be lost!
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(480, 385)
MainWindow.setWindowOpacity(1.0)
self.centralWidget = QtGui.QWidget(MainWindow)
self.centralWidget.setObjectName(_fromUtf8("centralWidget"))
self.textBrowser = QtGui.QTextBrowser(self.centralWidget)
self.textBrowser.setGeometry(QtCore.QRect(100, 120, 256, 192))
self.textBrowser.setObjectName(_fromUtf8("textBrowser"))
self.widget = QtGui.QWidget(self.centralWidget)
self.widget.setGeometry(QtCore.QRect(150, 10, 156, 97))
self.widget.setObjectName(_fromUtf8("widget"))
self.verticalLayout_2 = QtGui.QVBoxLayout(self.widget)
self.verticalLayout_2.setMargin(0)
self.verticalLayout_2.setObjectName(_fromUtf8("verticalLayout_2"))
self.verticalLayout = QtGui.QVBoxLayout()
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.lineEdit = QtGui.QLineEdit(self.widget)
self.lineEdit.setObjectName(_fromUtf8("lineEdit"))
self.verticalLayout.addWidget(self.lineEdit)
self.lineEdit_2 = QtGui.QLineEdit(self.widget)
self.lineEdit_2.setObjectName(_fromUtf8("lineEdit_2"))
self.verticalLayout.addWidget(self.lineEdit_2)
self.verticalLayout_2.addLayout(self.verticalLayout)
self.pushButton = QtGui.QPushButton(self.widget)
self.pushButton.setObjectName(_fromUtf8("pushButton"))
self.verticalLayout_2.addWidget(self.pushButton)
MainWindow.setCentralWidget(self.centralWidget)
self.menuBar = QtGui.QMenuBar(MainWindow)
self.menuBar.setGeometry(QtCore.QRect(0, 0, 480, 22))
self.menuBar.setObjectName(_fromUtf8("menuBar"))
MainWindow.setMenuBar(self.menuBar)
self.mainToolBar = QtGui.QToolBar(MainWindow)
self.mainToolBar.setObjectName(_fromUtf8("mainToolBar"))
MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
self.statusBar = QtGui.QStatusBar(MainWindow)
self.statusBar.setObjectName(_fromUtf8("statusBar"))
MainWindow.setStatusBar(self.statusBar)
self.retranslateUi(MainWindow)
QtCore.QObject.connect(self.lineEdit, QtCore.SIGNAL(_fromUtf8("textEdited(QString)")), self.lineEdit.setText)
QtCore.QObject.connect(self.lineEdit_2, QtCore.SIGNAL(_fromUtf8("textEdited(QString)")), self.lineEdit_2.setText)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
self.lineEdit.setPlaceholderText(_translate("MainWindow", "Enter Case Number", None))
self.lineEdit_2.setPlaceholderText(_translate("MainWindow", "Number of cases", None))
self.pushButton.setText(_translate("MainWindow", "Submit", None))
# Call a function when the button "Submit" is pressed
self.pushButton.clicked.connect(self.OnSubmit)
def OnSubmit(self):
# On submit do the necessary
# here I take the text from the LineEdits that you have
# (ie your Case Number, and number of Cases)
# and print them to the textbrowser below
text = self.lineEdit.text() + ' ' + self.lineEdit_2.text()
self.textBrowser.append(text)
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
MainWindow = QtGui.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
你可以在这里找到一些基本的教程：http://zetcode.com/gui/pyqt4/，它可以帮助你理解你的QtGui对象的属性。
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