實現了大部分記事本的功能，替換功能未能實現，還有主題樣式、狀態欄等，今後再加吧！
學習總結一，直接上代碼~
Demo 記事本
登錄主窗口（.ui轉爲.py）：untitled.py
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'I:\1實驗室\其他\QTtest\untitled.ui'
#
# Created by: PyQt5 UI code generator 5.10.1
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(399, 322)
self.label_state = QtWidgets.QLabel(Dialog)
self.label_state.setGeometry(QtCore.QRect(20, 290, 191, 16))
self.label_state.setObjectName("label_state")
self.btn_ok = QtWidgets.QPushButton(Dialog)
self.btn_ok.setGeometry(QtCore.QRect(80, 230, 75, 23))
self.btn_ok.setObjectName("btn_ok")
self.btn_cancel = QtWidgets.QPushButton(Dialog)
self.btn_cancel.setGeometry(QtCore.QRect(230, 230, 75, 23))
self.btn_cancel.setObjectName("btn_cancel")
self.lineEdit_username = QtWidgets.QLineEdit(Dialog)
self.lineEdit_username.setGeometry(QtCore.QRect(150, 50, 171, 20))
self.lineEdit_username.setObjectName("lineEdit_username")
self.label_username = QtWidgets.QLabel(Dialog)
self.label_username.setGeometry(QtCore.QRect(50, 50, 61, 16))
self.label_username.setObjectName("label_username")
self.lineEdit_password = QtWidgets.QLineEdit(Dialog)
self.lineEdit_password.setGeometry(QtCore.QRect(150, 90, 171, 20))
self.lineEdit_password.setInputMethodHints(QtCore.Qt.ImhNoAutoUppercase|QtCore.Qt.ImhNoPredictiveText|QtCore.Qt.ImhSensitiveData)
self.lineEdit_password.setEchoMode(QtWidgets.QLineEdit.PasswordEchoOnEdit)
self.lineEdit_password.setObjectName("lineEdit_password")
self.label_password = QtWidgets.QLabel(Dialog)
self.label_password.setGeometry(QtCore.QRect(50, 90, 61, 16))
self.label_password.setObjectName("label_password")
self.retranslateUi(Dialog)
self.btn_cancel.clicked.connect(Dialog.close)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
self.label_state.setText(_translate("Dialog", "TextLabel"))
self.btn_ok.setText(_translate("Dialog", "ok"))
self.btn_cancel.setText(_translate("Dialog", "cancel"))
self.label_username.setText(_translate("Dialog", "User name"))
self.label_password.setText(_translate("Dialog", "Password"))
登錄成功提示窗口（.ui轉爲.py）：information_ok.py
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'I:\1實驗室\其他\QTtest\information_ok.ui'
#
# Created by: PyQt5 UI code generator 5.10.1
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(208, 122)
self.label = QtWidgets.QLabel(Form)
self.label.setGeometry(QtCore.QRect(10, 10, 181, 71))
self.label.setAlignment(QtCore.Qt.AlignCenter)
self.label.setObjectName("label")
self.buttonBox = QtWidgets.QDialogButtonBox(Form)
self.buttonBox.setGeometry(QtCore.QRect(0, 70, 171, 32))
self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
self.buttonBox.setObjectName("buttonBox")
self.retranslateUi(Form)
self.buttonBox.clicked['QAbstractButton*'].connect(Form.close)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
self.label.setText(_translate("Form", "登錄成功！"))
登錄失敗提示窗口（.ui轉爲.py）：information_no.py
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'I:\1實驗室\其他\QTtest\information_no.ui'
#
# Created by: PyQt5 UI code generator 5.10.1
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(208, 122)
self.label = QtWidgets.QLabel(Form)
self.label.setGeometry(QtCore.QRect(10, 10, 181, 71))
self.label.setAlignment(QtCore.Qt.AlignCenter)
self.label.setObjectName("label")
self.buttonBox = QtWidgets.QDialogButtonBox(Form)
self.buttonBox.setGeometry(QtCore.QRect(0, 70, 171, 32))
self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
self.buttonBox.setObjectName("buttonBox")
self.retranslateUi(Form)
self.buttonBox.clicked['QAbstractButton*'].connect(Form.close)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
self.label.setText(_translate("Form", "登錄失敗！"))
記事本界面（.ui轉爲.py）：mainMenu.py
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'I:\1實驗室\其他\QTtest\mainMenu.ui'
#
# Created by: PyQt5 UI code generator 5.10.1
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainMenu(object):
def setupUi(self, MainMenu):
MainMenu.setObjectName("MainMenu")
MainMenu.resize(800, 663)
self.centralwidget = QtWidgets.QWidget(MainMenu)
self.centralwidget.setObjectName("centralwidget")
self.textEdit = QtWidgets.QTextEdit(self.centralwidget)
self.textEdit.setGeometry(QtCore.QRect(30, 110, 731, 451))
self.textEdit.setObjectName("textEdit")
self.btn_ok = QtWidgets.QPushButton(self.centralwidget)
self.btn_ok.setGeometry(QtCore.QRect(590, 580, 75, 23))
self.btn_ok.setObjectName("btn_ok")
self.btn_cancel = QtWidgets.QPushButton(self.centralwidget)
self.btn_cancel.setGeometry(QtCore.QRect(680, 580, 75, 23))
self.btn_cancel.setObjectName("btn_cancel")
self.label_state = QtWidgets.QLabel(self.centralwidget)
self.label_state.setGeometry(QtCore.QRect(30, 580, 191, 16))
self.label_state.setObjectName("label_state")
self.label_path = QtWidgets.QLabel(self.centralwidget)
self.label_path.setGeometry(QtCore.QRect(40, 70, 51, 20))
self.label_path.setAlignment(QtCore.Qt.AlignCenter)
self.label_path.setObjectName("label_path")
self.lineEdit_path = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit_path.setGeometry(QtCore.QRect(110, 69, 551, 31))
self.lineEdit_path.setObjectName("lineEdit_path")
self.btn_browser = QtWidgets.QPushButton(self.centralwidget)
self.btn_browser.setGeometry(QtCore.QRect(680, 70, 75, 23))
self.btn_browser.setObjectName("btn_browser")
self.groupBox = QtWidgets.QGroupBox(self.centralwidget)
self.groupBox.setGeometry(QtCore.QRect(0, 0, 801, 41))
self.groupBox.setTitle("")
self.groupBox.setObjectName("groupBox")
self.fontComboBox = QtWidgets.QFontComboBox(self.groupBox)
self.fontComboBox.setGeometry(QtCore.QRect(20, 10, 171, 22))
self.fontComboBox.setObjectName("fontComboBox")
self.btn_setting = QtWidgets.QPushButton(self.groupBox)
self.btn_setting.setGeometry(QtCore.QRect(200, 10, 61, 23))
self.btn_setting.setObjectName("btn_setting")
MainMenu.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainMenu)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
self.menuFile = QtWidgets.QMenu(self.menubar)
self.menuFile.setObjectName("menuFile")
self.menuEdit = QtWidgets.QMenu(self.menubar)
self.menuEdit.setObjectName("menuEdit")
self.menuHelp = QtWidgets.QMenu(self.menubar)
self.menuHelp.setObjectName("menuHelp")
self.menuOthers = QtWidgets.QMenu(self.menubar)
self.menuOthers.setObjectName("menuOthers")
MainMenu.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainMenu)
self.statusbar.setObjectName("statusbar")
MainMenu.setStatusBar(self.statusbar)
self.actionOpen = QtWidgets.QAction(MainMenu)
self.actionOpen.setObjectName("actionOpen")
self.actionSave = QtWidgets.QAction(MainMenu)
self.actionSave.setObjectName("actionSave")
self.actionExit = QtWidgets.QAction(MainMenu)
self.actionExit.setObjectName("actionExit")
self.actionRestart = QtWidgets.QAction(MainMenu)
self.actionRestart.setObjectName("actionRestart")
self.actionAbout_us = QtWidgets.QAction(MainMenu)
self.actionAbout_us.setObjectName("actionAbout_us")
self.actionCopy = QtWidgets.QAction(MainMenu)
self.actionCopy.setObjectName("actionCopy")
self.actionPaste = QtWidgets.QAction(MainMenu)
self.actionPaste.setObjectName("actionPaste")
self.actionCut = QtWidgets.QAction(MainMenu)
self.actionCut.setObjectName("actionCut")
self.actionSelect_all = QtWidgets.QAction(MainMenu)
self.actionSelect_all.setObjectName("actionSelect_all")
self.actionClear_all = QtWidgets.QAction(MainMenu)
self.actionClear_all.setObjectName("actionClear_all")
self.actionAdd_date = QtWidgets.QAction(MainMenu)
self.actionAdd_date.setObjectName("actionAdd_date")
self.actionFont = QtWidgets.QAction(MainMenu)
self.actionFont.setObjectName("actionFont")
self.actionFind = QtWidgets.QAction(MainMenu)
self.actionFind.setObjectName("actionFind")
self.actionReplace = QtWidgets.QAction(MainMenu)
self.actionReplace.setObjectName("actionReplace")
self.actionUndo = QtWidgets.QAction(MainMenu)
self.actionUndo.setObjectName("actionUndo")
self.actionPrint = QtWidgets.QAction(MainMenu)
self.actionPrint.setObjectName("actionPrint")
self.menuFile.addAction(self.actionOpen)
self.menuFile.addAction(self.actionSave)
self.menuFile.addAction(self.actionExit)
self.menuFile.addSeparator()
self.menuFile.addAction(self.actionRestart)
self.menuFile.addSeparator()
self.menuFile.addAction(self.actionPrint)
self.menuEdit.addAction(self.actionCopy)
self.menuEdit.addAction(self.actionPaste)
self.menuEdit.addAction(self.actionCut)
self.menuEdit.addSeparator()
self.menuEdit.addAction(self.actionSelect_all)
self.menuEdit.addAction(self.actionClear_all)
self.menuEdit.addSeparator()
self.menuEdit.addAction(self.actionAdd_date)
self.menuEdit.addSeparator()
self.menuEdit.addAction(self.actionFont)
self.menuHelp.addAction(self.actionAbout_us)
self.menuOthers.addAction(self.actionFind)
self.menuOthers.addAction(self.actionReplace)
self.menuOthers.addAction(self.actionUndo)
self.menubar.addAction(self.menuFile.menuAction())
self.menubar.addAction(self.menuEdit.menuAction())
self.menubar.addAction(self.menuOthers.menuAction())
self.menubar.addAction(self.menuHelp.menuAction())
self.retranslateUi(MainMenu)
self.btn_cancel.clicked.connect(MainMenu.close)
QtCore.QMetaObject.connectSlotsByName(MainMenu)
def retranslateUi(self, MainMenu):
_translate = QtCore.QCoreApplication.translate
MainMenu.setWindowTitle(_translate("MainMenu", "MainMenu"))
self.btn_ok.setText(_translate("MainMenu", "Ok"))
self.btn_cancel.setText(_translate("MainMenu", "Cancel"))
self.label_state.setText(_translate("MainMenu", "State:"))
self.label_path.setText(_translate("MainMenu", "Path"))
self.btn_browser.setText(_translate("MainMenu", "Browser"))
self.btn_setting.setText(_translate("MainMenu", "Setting"))
self.menuFile.setTitle(_translate("MainMenu", "File"))
self.menuEdit.setTitle(_translate("MainMenu", "Edit"))
self.menuHelp.setTitle(_translate("MainMenu", "Help"))
self.menuOthers.setTitle(_translate("MainMenu", "Others"))
self.actionOpen.setText(_translate("MainMenu", "Open"))
self.actionOpen.setShortcut(_translate("MainMenu", "Ctrl+O"))
self.actionSave.setText(_translate("MainMenu", "Save"))
self.actionSave.setShortcut(_translate("MainMenu", "Ctrl+S"))
self.actionExit.setText(_translate("MainMenu", "Exit"))
self.actionExit.setShortcut(_translate("MainMenu", "Ctrl+D"))
self.actionRestart.setText(_translate("MainMenu", "Restart"))
self.actionAbout_us.setText(_translate("MainMenu", "About us"))
self.actionCopy.setText(_translate("MainMenu", "Copy"))
self.actionCopy.setShortcut(_translate("MainMenu", "Ctrl+C"))
self.actionPaste.setText(_translate("MainMenu", "Paste"))
self.actionPaste.setShortcut(_translate("MainMenu", "Ctrl+V"))
self.actionCut.setText(_translate("MainMenu", "Cut"))
self.actionCut.setShortcut(_translate("MainMenu", "Ctrl+X"))
self.actionSelect_all.setText(_translate("MainMenu", "Select all"))
self.actionSelect_all.setShortcut(_translate("MainMenu", "Ctrl+A"))
self.actionClear_all.setText(_translate("MainMenu", "Clear all"))
self.actionAdd_date.setText(_translate("MainMenu", "Add date"))
self.actionFont.setText(_translate("MainMenu", "Font"))
self.actionFind.setText(_translate("MainMenu", "Find"))
self.actionFind.setShortcut(_translate("MainMenu", "Ctrl+F"))
self.actionReplace.setText(_translate("MainMenu", "Replace"))
self.actionReplace.setShortcut(_translate("MainMenu", "Ctrl+R"))
self.actionUndo.setText(_translate("MainMenu", "Undo"))
self.actionUndo.setShortcut(_translate("MainMenu", "Ctrl+Z"))
self.actionPrint.setText(_translate("MainMenu", "Print"))
self.actionPrint.setShortcut(_translate("MainMenu", "Ctrl+P"))
進度條（.ui轉爲.py）：progressbar.py
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'I:\1實驗室\其他\QTtest\progressbar.ui'
#
# Created by: PyQt5 UI code generator 5.10.1
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(400, 66)
Form.setWindowOpacity(0.5)
Form.setAutoFillBackground(False)
self.progressBar = QtWidgets.QProgressBar(Form)
self.progressBar.setGeometry(QtCore.QRect(40, 20, 331, 23))
self.progressBar.setProperty("value", 24)
self.progressBar.setObjectName("progressBar")
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
主函數：run.py
# -*- coding: utf-8 -*-
"""
Created on Mon Feb 24 00:53:14 2020
@author: Administrator
"""
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QMessageBox
from PyQt5.QtCore import QTimer, QDateTime, QBasicTimer
from PyQt5.QtGui import QIcon, QTextDocument
from PyQt5.QtPrintSupport import QPrinter, QPrintDialog,QPrintPreviewDialog
from untitled import Ui_Dialog
from information_ok import Ui_Form as form_ok
from information_no import Ui_Form as form_no
from mainMenu import Ui_MainMenu
from progressbar import Ui_Form
class mywindow(QtWidgets.QDialog, Ui_Dialog):
def __init__ (self):
super(mywindow, self).__init__()
self.setupUi(self)
self.btn_ok.clicked.connect(self.printState)
def printState(self):
#顯示狀態
# if self.lineEdit_username.text == "1" and self.lineEdit_password.text == "1":
if self.lineEdit_username.text().strip() == "1" and self.lineEdit_password.text() == "1":
words = "Login successful!"
self.w1 = window_ok()
self.w1.show()
self.close()
else:
words = "Login faild!"
self.w2 = window_no()
self.w2.show()
self.close()
self.label_state.setText(words)
class window_ok(QtWidgets.QWidget, form_ok):
def __init__ (self):
super(window_ok, self).__init__()
self.setupUi(self)
self.buttonBox.clicked.connect(self.showMenu)
def showMenu(self):
#顯示菜單
self.m = menu()
self.m.show()
self.close()
class window_no(QtWidgets.QWidget, form_no):
def __init__ (self):
super(window_no, self).__init__()
self.setupUi(self)
self.buttonBox.clicked.connect(self.showLogin)
def showLogin(self):
self.l = mywindow()
self.l.show()
self.close()
class menu(QtWidgets.QMainWindow, Ui_MainMenu):
def __init__(self):
super(menu, self).__init__()
self.setupUi(self)
self.btn_ok.clicked.connect(self.printState)
self.btn_browser.clicked.connect(self.browser)
self.actionOpen.triggered.connect(self.browser) #menu/open
self.actionSave.triggered.connect(self.printState) #menu/save
self.actionExit.triggered.connect(self.menu_Exit) #menu/exit
self.actionRestart.triggered.connect(self.menu_Restart) #menu/restart
self.actionPrint.triggered.connect(self.menu_print)#menu/print
self.actionCopy.triggered.connect(self.menu_Copy) #menu/copy
self.actionPaste.triggered.connect(self.menu_Paste) #menu/paste
self.actionCut.triggered.connect(self.menu_Cut) #menu/cut
self.actionSelect_all.triggered.connect(self.menu_selectAll) #menu/Select_all
self.actionClear_all.triggered.connect(self.menu_clearAll) #menu/Clear_all
self.actionAdd_date.triggered.connect(self.menu_addDate) #menu/Add_date
self.actionFont.triggered.connect(self.menu_font) #menu/font
self.actionFind.triggered.connect(self.menu_find) #menu/find
# self.actionReplace.triggered.connect(self.menu_replace) #menu/replace
self.actionUndo.triggered.connect(self.menu_undo) #menu/undo
self.actionAbout_us.triggered.connect(self.menu_aboutUs) #menu/About_us
self.fontComboBox.currentFontChanged.connect(self.tool_font) #工具欄的字體設置
self.btn_setting.clicked.connect(self.menu_font) #工具欄的Setting按鈕
#保存並打印狀態
def printState(self):
#保存txt
save_path = QtWidgets.QFileDialog.getSaveFileName(self, "存儲", "I:\\1實驗室\\其他\\QTtest\\", "Text Files (*.txt);;All Files (*)")
#設置文件擴展名過濾,注意用雙分號間隔
f = open(save_path[0], "w", encoding="utf-8")
my_data = self.textEdit.toPlainText()
f.write(my_data)
f.close()
#顯示進度條
progressBar().show()
#打印狀態
words = "Save successful!"
self.label_state.setText(words)
#文件目錄瀏覽並顯示路徑及內容
def browser(self):
# onload_path = QtWidgets.QFileDialog.getExistingDirectory(self, "瀏覽", "I:\\1實驗室\\其他\\QTtest\\")
onload_path = QtWidgets.QFileDialog.getOpenFileName(self, "瀏覽", "I:\\1實驗室\\其他\\QTtest\\", "Text Files (*.txt);;All Files (*)")
#設置文件擴展名過濾,用雙分號間隔
# print(onload_path)
self.lineEdit_path.setText(onload_path[0])
#顯示文件的內容
# f = open(onload_path[0], "r", encoding="ISO-8859-1")
f = open(onload_path[0], "r", encoding="utf-8")
my_data = f.read()
f.close()
self.textEdit.setText(my_data)
#退出此窗口
def menu_Exit(self):
self.close()
#重啓窗口
def menu_Restart(self):
self.hide()
self.textEdit.setText("")
self.lineEdit_path.setText("")
import time
time.sleep(1) #時間延遲1s
self.show()
#複製內容
def menu_Copy(self):
self.textEdit.copy()
#粘貼內容
def menu_Paste(self):
self.textEdit.paste()
#剪切內容
def menu_Cut(self):
self.textEdit.cut()
#全選內容
def menu_selectAll(self):
self.textEdit.selectAll()
#清空內容
def menu_clearAll(self):
self.textEdit.clear()
#添加日期
def menu_addDate(self):
time = QDateTime.currentDateTime()
timeDisplay = time.toString("yyyy-MM-dd hh:mm:ss dddd")
self.textEdit.append(timeDisplay)
#關於我們
def menu_aboutUs(self):
QMessageBox.information(self,"關於我們","This is a demo!", QMessageBox.Ok | QMessageBox.Close, QMessageBox.Close)
#字體設置-菜單的font
def menu_font(self):
font_dialog = QtWidgets.QFontDialog()
font_dialog.show()
font, isok = font_dialog.getFont()
print("font: "+str(font))
if isok == True:
self.textEdit.setFont(font)
self.fontComboBox.setCurrentFont(font)
#字體設置-工具欄的font
def tool_font(self):
font = self.fontComboBox.currentFont()
self.textEdit.setFont(font)
#撤銷
def menu_undo(self):
self.textEdit.undo()
#查找
def menu_find(self):
findDlg = QtWidgets.QDialog(self)
findDlg.setWindowTitle('查找...')
self.find_textLineEdit = QtWidgets.QLineEdit(findDlg)
find_next_button = QtWidgets.QPushButton('查找下一個', findDlg)
find_last_button = QtWidgets.QPushButton('查找上一個', findDlg)
v_layout = QtWidgets.QVBoxLayout(self)
v_layout.addWidget(find_last_button)
v_layout.addWidget(find_next_button)
h_layout = QtWidgets.QHBoxLayout(findDlg)
h_layout.addWidget(self.find_textLineEdit)
h_layout.addLayout(v_layout)
find_last_button.clicked.connect(self.show_findLast)
find_next_button.clicked.connect(self.show_findNext)
findDlg.show()
def show_findLast(self):
find_text = self.find_textLineEdit.text()
print(find_text)
print(self.textEdit.find(find_text, QTextDocument.FindBackward))
# if self.textEdit.find(find_text, QTextDocument.find):
# QMessageBox.warning(self, '查找', '找不到 {}'.format(find_text))
def show_findNext(self):
find_text = self.find_textLineEdit.text()
print(find_text)
print(self.textEdit.find(find_text, QTextDocument.FindBackward))
if self.textEdit.find(find_text, QTextDocument.FindBackward):
QMessageBox.warning(self, '查找', '找不到 {}'.format(find_text))
#替換(基於查找功能添加按鈕及替換操作)
# def menu_replace(self):
# findDlg = QtWidgets.QDialog(self)
# findDlg.setWindowTitle('替換...')
#打印
def menu_print(self):
dialog = QPrintPreviewDialog()
dialog.paintRequested.connect(self.handlePrint)
dialog.exec_()
def handlePrint(self, printer):#打印方法
self.textEdit.print(printer)
#進度條
class progressBar(QtWidgets.QWidget, Ui_Form):
def __init__ (self):
super(progressBar, self).__init__()
self.setupUi(self)
# self.buttonBox.clicked.connect(self.showLogin)
# self.show()
self.timer = QBasicTimer()
self.step = 0
def timerEvent(self, event):
if self.step >=100:
self.timer.stop()
return
self.step = self.step + 1
self.progressBar.setValue(self.step)
import time
time.sleep(1)
if __name__=="__main__":
import sys
# 添加if判斷語句可以解決spyder內核重啓的問題
if not QtWidgets.QApplication.instance():
app = QtWidgets.QApplication(sys.argv)
else:
app = QtWidgets.QApplication.instance()
# app=QtWidgets.QApplication(sys.argv)
ui = mywindow()
ui.show()
# input("input something")
sys.exit(app.exec_())
運行界面
登錄界面見上一篇博客，下面主要展示記事本功能。
注意事項
- 之前的問題：運行時總會出現“Kernel died, restarting”，今天得以解決。
app=QtWidgets.QApplication(sys.argv)替換爲：
# 添加if判斷語句可以解決spyder內核重啓的問題 if not QtWidgets.QApplication.instance(): app = QtWidgets.QApplication(sys.argv) else: app = QtWidgets.QApplication.instance()原因爲：實例化QApplication是造成內核重啓的根源，因爲ipython console在同一進程中只允許一個QApplication存在，否則就會出現內核分割錯誤，所以我們在實例化QApplication之前應該加入判斷語句。
（引用自：https://blog.csdn.net/MSDN_tang/article/details/80098412） -
.txt文件讀取過程中，編碼方式需要注意。
有大佬說，ISO-8859-1基本能處理常見問題，但親測還是有問題，能夠讀取文件內容，但中文顯示是亂碼。
有很多關於這個的教程，但親測最方便、簡單、暴力的方法是：將需要讀取的.txt文件另存爲utf-8格式，然後再以utf-8格式進行讀取操作。 -
保存文件獲取的路徑save_path，在使用open方法時，應使用save_path[0]。
且文件擴展名過濾應該使用雙分號間隔。#保存txt save_path = QtWidgets.QFileDialog.getSaveFileName(self, "存儲", "I:\\1實驗室\\其他\\QTtest\\", "Text Files (*.txt);;All Files (*)") #設置文件擴展名過濾,注意用雙分號間隔 f = open(save_path[0], "w", encoding="utf-8") -
設置字體時，應特別注意控件所對應的方法及個人所需要實現的功能是不同的，如textEdit與fontComboBox。
fontComboBox同樣也有setFont()方法，但使用之後會發現，改變的是控件內的字體，而非我想要實現的內容。#字體設置-菜單的font def menu_font(self): font_dialog = QtWidgets.QFontDialog() font_dialog.show() font, isok = font_dialog.getFont() print("font: "+str(font)) if isok == True: self.textEdit.setFont(font) self.fontComboBox.setCurrentFont(font) -
此記事本所實現的功能包括：文本編輯、保存、打開、替換、撤銷、打印及打印預覽、退出、重啓、複製、粘貼、剪切、選擇全部、清空、撤銷、進度條、添加日期、關於我們等功能。
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其中替換、打印及打印預覽、進度條等功能主要參考了其他大佬的作品，小菜在此表示感謝，參考鏈接爲：
https://blog.csdn.net/BigTail_cat/article/details/80611993
https://blog.csdn.net/qq_43071318/article/details/102869617
https://blog.csdn.net/c3060911030/article/details/51552325
存在的問題
- 很遺憾，替換功能未能實現，主要是卡在不知道如何將選中的內容替換爲新的內容，待小菜詳細閱讀開發文檔之後再行補充。
- 控件及窗體略醜，待今後改進。在查閱資料的時候，看到這位大佬的博客內容棒棒噠，是關於QSS美化主題的，在此分享給大家：
https://www.cnblogs.com/yywBlogW/p/11617956.html
有緣看到的小夥伴，給人家點個讚唄~麼麼噠❤