PyQT4:从Ui获取现有python程序的文本
PyQT4:从Ui获取现有python程序的文本
提问于 2014-08-13 23:20:47
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)，我想使用它们来获取程序要使用的信息，一个按钮和一个文本浏览器，用于保存程序的输出。
我偶然发现了PyQT4，它是我用自制和QT安装的。我已经创建了UI，并将其从mainwindow.ui转换为mainwindow.py，现在我正在设法从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(QlineEdit)中提取文本，并将它们存储在程序随后可以使用的变量(字符串)中。
根据我的理解，我应该创建一个新的.py文件并导入主窗口以及PyQT4.QtCore和PyQT4.QtGui。我不知道从哪里出发，所以任何洞察力都会有帮助。
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文件重新构建我的程序？
如果这些都是琐碎的信息，我很抱歉，但我从未使用过PyQT或Qt创建者。
下面是从转换后的.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
回答 1
Stack Overflow用户
回答已采纳
发布于 2014-08-13 23:48:17
UI的工作方式是UI形成程序的主循环。这里，mainwindow.py是您的主循环。您可以导入您在程序中创建的类(让我们称之为code.py)，也可以将这些代码粘贴到mainwindow.py中。然后，在按下按钮或其他类型的事件时，您可以调用一个函数来执行您的的code.py主代码。
要回答有关如何使用文本并打印到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_())您可以在这里找到一些基本教程：http://zetcode.com/gui/pyqt4/，它可以帮助您理解QtGui对象的属性。
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原文链接：
https://stackoverflow.com/questions/25297771
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