本文實例講述了Python PyQt5標準對話框用法。分享給大家供大家參考，具體如下：

很全的Qt的標準對話框，包含QInputDialog、QColorDialog、QFontDialog、QMessageBox、QOpenFileDialog...

全部是由官網的C++版本，轉換成PyQt5版本。

有些細節忽略了，因為實在不知怎么轉換過來。搗鼓了一晚上，總算完成了，好累啊，不過很開心！

效果圖：

完整代碼：

# -*- coding: utf-8 -*-from PyQt5.QtGui import *from PyQt5.QtCore import *from PyQt5.QtWidgets import *import sysclass DialogOptionsWidget(QWidget): def __init__(self, parent=None):  super(DialogOptionsWidget,self).__init__(parent) def addCheckBox(self, text, value):  pass def addSpacer():  pass def value():  passclass StandardDialog(QDialog): def __init__(self,parent=None):  super(StandardDialog,self).__init__(parent)  self.setWindowTitle("Standard Dialog")  frameStyle = QFrame.Sunken | QFrame.Panel  mainLayout = QVBoxLayout(self)  toolbox = QToolBox()  mainLayout.addWidget(toolbox)  self.errorMessageDialog = QErrorMessage(self)  pushButton_integer = QPushButton("QInputDialog.get&Int()")  pushButton_double = QPushButton("QInputDialog.get&Double()")  pushButton_item = QPushButton("QInputDialog.getIte&m()")  pushButton_text = QPushButton("QInputDialog.get&Text()")  pushButton_multiLineText = QPushButton("QInputDialog.get&MultiLineText()")  pushButton_color = QPushButton("QColorDialog.get&Color()")  pushButton_font = QPushButton("QFontDialog.get&Font()")  pushButton_directory = QPushButton("QFileDialog.getE&xistingDirectory()")  pushButton_openFileName = QPushButton("QFileDialog.get&OpenFileName()")  pushButton_openFileNames = QPushButton("QFileDialog.&getOpenFileNames()")  pushButton_saveFileName = QPushButton("QFileDialog.get&SaveFileName()")  pushButton_critical = QPushButton("QMessageBox.critica&l()")  pushButton_information = QPushButton("QMessageBox.i&nformation()")  pushButton_question = QPushButton("QQMessageBox.&question()")  pushButton_warning = QPushButton("QMessageBox.&warning()")  pushButton_error = QPushButton("QErrorMessage.showM&essage()")  self.label_integer = QLabel()  self.label_double = QLabel()  self.label_item = QLabel()  self.label_text = QLabel()  self.label_multiLineText = QLabel()  self.label_color = QLabel()  self.label_font = QLabel()  self.label_directory = QLabel()  self.label_openFileName = QLabel()  self.label_openFileNames = QLabel()  self.label_saveFileName = QLabel()  self.label_critical = QLabel()  self.label_information = QLabel()  self.label_question = QLabel()  self.label_warning = QLabel()  self.label_error = QLabel()  self.label_integer.setFrameStyle(frameStyle)  self.label_double.setFrameStyle(frameStyle)  self.label_item.setFrameStyle(frameStyle)  self.label_text.setFrameStyle(frameStyle)  self.label_multiLineText.setFrameStyle(frameStyle)  self.label_color.setFrameStyle(frameStyle)  self.label_font.setFrameStyle(frameStyle)  self.label_directory.setFrameStyle(frameStyle)  self.label_openFileName.setFrameStyle(frameStyle)  self.label_openFileNames.setFrameStyle(frameStyle)  self.label_saveFileName.setFrameStyle(frameStyle)  self.label_critical.setFrameStyle(frameStyle)  self.label_information.setFrameStyle(frameStyle)  self.label_question.setFrameStyle(frameStyle)  self.label_warning.setFrameStyle(frameStyle)  self.label_error.setFrameStyle(frameStyle)  page = QWidget()  layout = QGridLayout(page)  layout.setColumnStretch(1,1)  layout.setColumnMinimumWidth(1,250)  layout.addWidget(pushButton_integer,0,0)  layout.addWidget(self.label_integer,0,1)  layout.addWidget(pushButton_double,1,0)  layout.addWidget(self.label_double,1,1)  layout.addWidget(pushButton_item,2,0)  layout.addWidget(self.label_item,2,1)  layout.addWidget(pushButton_text,3,0)  layout.addWidget(self.label_text,3,1)  layout.addWidget(pushButton_multiLineText,4,0)  layout.addWidget(self.label_multiLineText,4,1)  layout.addItem(QSpacerItem(0,0,QSizePolicy.Ignored,QSizePolicy.MinimumExpanding),5,0)  toolbox.addItem(page, "Input Dialog")  page = QWidget()  layout = QGridLayout(page)  layout.setColumnStretch(1,1)  #layout.setColumnMinimumWidth(1,250)  layout.addWidget(pushButton_color,0,0)  layout.addWidget(self.label_color,0,1)  colorDialogOptionsWidget = DialogOptionsWidget()  colorDialogOptionsWidget.addCheckBox("Do not use native dialog", QColorDialog.DontUseNativeDialog)  colorDialogOptionsWidget.addCheckBox("Show alpha channel" , QColorDialog.ShowAlphaChannel)  colorDialogOptionsWidget.addCheckBox("No buttons" , QColorDialog.NoButtons)  layout.addItem(QSpacerItem(0,0,QSizePolicy.Ignored,QSizePolicy.MinimumExpanding),1,0)  layout.addWidget(colorDialogOptionsWidget, 2, 0, 1 ,2)  toolbox.addItem(page, "Color Dialog")  page = QWidget()  layout = QGridLayout(page)  layout.setColumnStretch(1, 1)  layout.addWidget(pushButton_font, 0, 0)  layout.addWidget(self.label_font, 0, 1)  fontDialogOptionsWidget = DialogOptionsWidget()  fontDialogOptionsWidget.addCheckBox("Do not use native dialog", QFontDialog.DontUseNativeDialog)  fontDialogOptionsWidget.addCheckBox("No buttons", QFontDialog.NoButtons)  layout.addItem(QSpacerItem(0, 0, QSizePolicy.Ignored, QSizePolicy.MinimumExpanding), 1, 0)  layout.addWidget(fontDialogOptionsWidget, 2, 0, 1 ,2)  toolbox.addItem(page, "Font Dialog")  page = QWidget()  layout = QGridLayout(page)  layout.setColumnStretch(1, 1)  layout.addWidget(pushButton_directory, 0, 0)  layout.addWidget(self.label_directory, 0, 1)  layout.addWidget(pushButton_openFileName, 1, 0)  layout.addWidget(self.label_openFileName, 1, 1)  layout.addWidget(pushButton_openFileNames, 2, 0)  layout.addWidget(self.label_openFileNames, 2, 1)  layout.addWidget(pushButton_saveFileName, 3, 0)  layout.addWidget(self.label_saveFileName, 3, 1)  fileDialogOptionsWidget = DialogOptionsWidget()  fileDialogOptionsWidget.addCheckBox("Do not use native dialog", QFileDialog.DontUseNativeDialog)  fileDialogOptionsWidget.addCheckBox("Show directories only", QFileDialog.ShowDirsOnly)  fileDialogOptionsWidget.addCheckBox("Do not resolve symlinks", QFileDialog.DontResolveSymlinks)  fileDialogOptionsWidget.addCheckBox("Do not confirm overwrite", QFileDialog.DontConfirmOverwrite)  fileDialogOptionsWidget.addCheckBox("Do not use sheet", QFileDialog.DontUseSheet)  fileDialogOptionsWidget.addCheckBox("Readonly", QFileDialog.ReadOnly)  fileDialogOptionsWidget.addCheckBox("Hide name filter details", QFileDialog.HideNameFilterDetails)  layout.addItem(QSpacerItem(0, 0, QSizePolicy.Ignored, QSizePolicy.MinimumExpanding), 4, 0)  layout.addWidget(fileDialogOptionsWidget, 5, 0, 1 ,2)  toolbox.addItem(page, "File Dialogs")  page = QWidget()  layout = QGridLayout(page)  layout.setColumnStretch(1, 1)  layout.addWidget(pushButton_critical, 0, 0)  layout.addWidget(self.label_critical, 0, 1)  layout.addWidget(pushButton_information, 1, 0)  layout.addWidget(self.label_information, 1, 1)  layout.addWidget(pushButton_question, 2, 0)  layout.addWidget(self.label_question, 2, 1)  layout.addWidget(pushButton_warning, 3, 0)  layout.addWidget(self.label_warning, 3, 1)  layout.addWidget(pushButton_error, 4, 0)  layout.addWidget(self.label_error, 4, 1)  layout.addItem(QSpacerItem(0, 0, QSizePolicy.Ignored, QSizePolicy.MinimumExpanding), 5, 0)  toolbox.addItem(page, "Message Boxes")  pushButton_integer.clicked.connect(self.setInteger)  pushButton_double.clicked.connect(self.setDouble)  pushButton_item.clicked.connect(self.setItem)  pushButton_text.clicked.connect(self.setText)  pushButton_multiLineText.clicked.connect(self.setMultiLineText)  pushButton_color.clicked.connect(self.setColor)  pushButton_font.clicked.connect(self.setFont)  pushButton_directory.clicked.connect(self.setExistingDirectory)  pushButton_openFileName.clicked.connect(self.setOpenFileName)  pushButton_openFileNames.clicked.connect(self.setOpenFileNames)  pushButton_saveFileName.clicked.connect(self.setSaveFileName)  pushButton_critical.clicked.connect(self.criticalMessage)  pushButton_information.clicked.connect(self.informationMessage)  pushButton_question.clicked.connect(self.questionMessage)  pushButton_warning.clicked.connect(self.warningMessage)  pushButton_error.clicked.connect(self.errorMessage) #輸入對話框 取整數 def setInteger(self):  intNum, ok = QInputDialog.getInt(self, "QInputDialog.getInteger()","Percentage:", 25, 0, 100, 1)  if ok:   self.label_integer.setText(str(intNum)) #輸入對話框 取實數 def setDouble(self):  doubleNum, ok = QInputDialog.getDouble(self, "QInputDialog.getDouble()", "Amount:", 37.56, -10000, 10000, 2)  if ok:   self.label_double.setText(str(doubleNum)) #輸入對話框 取列表項 def setItem(self):  items = ["Spring", "Summer", "Fall", "Winter"]  item, ok = QInputDialog.getItem(self, "QInputDialog.getItem()","Season:", items, 0, False)  if ok and item:   self.label_item.setText(item) #輸入對話框 取文本 def setText(self):  text, ok = QInputDialog.getText(self, "QInputDialog.getText()", "User name:", QLineEdit.Normal, QDir.home().dirName())  if ok and text:   self.label_text.setText(text) #輸入對話框 取多行文本 def setMultiLineText(self):  text, ok = QInputDialog.getMultiLineText(self, "QInputDialog.getMultiLineText()", "Address:", "John Doe/nFreedom Street")  if ok and text:   self.label_multiLineText.setText(text) #顏色對話框 取顏色 def setColor(self):  #options = QColorDialog.ColorDialogOptions(QFlag.QFlag(colorDialogOptionsWidget.value()))  color = QColorDialog.getColor(Qt.green, self, "Select Color")  if color.isValid():   self.label_color.setText(color.name())   self.label_color.setPalette(QPalette(color))   self.label_color.setAutoFillBackground(True) #字體對話框 取字體 def setFont(self):  #options = QFontDialog.FontDialogOptions(QFlag(fontDialogOptionsWidget.value()))  #font, ok = QFontDialog.getFont(ok, QFont(self.label_font.text()), self, "Select Font",options)  font, ok = QFontDialog.getFont()  if ok:   self.label_font.setText(font.key())   self.label_font.setFont(font) #目錄對話框 取目錄 def setExistingDirectory(self):  #options = QFileDialog.Options(QFlag(fileDialogOptionsWidget->value()))  #options |= QFileDialog.DontResolveSymlinks | QFileDialog.ShowDirsOnly  directory = QFileDialog.getExistingDirectory(self,         "QFileDialog.getExistingDirectory()",         self.label_directory.text())  if directory:   self.label_directory.setText(directory) #打開文件對話框 取文件名 def setOpenFileName(self):  #options = QFileDialog.Options(QFlag(fileDialogOptionsWidget.value()))  #selectedFilter  fileName, filetype = QFileDialog.getOpenFileName(self,         "QFileDialog.getOpenFileName()",         self.label_openFileName.text(),         "All Files (*);;Text Files (*.txt)")  if fileName:   self.label_openFileName.setText(fileName) #打開文件對話框 取一組文件名 def setOpenFileNames(self):  #options = QFileDialog.Options(QFlag(fileDialogOptionsWidget.value()))  #selectedFilter  openFilesPath = "D:/documents/pyMarksix/draw/"  files, ok = QFileDialog.getOpenFileNames(self,         "QFileDialog.getOpenFileNames()",         openFilesPath,         "All Files (*);;Text Files (*.txt)")  if len(files):   self.label_openFileNames.setText(", ".join(files)) #保存文件對話框 取文件名 def setSaveFileName(self):  #options = QFileDialog.Options(QFlag(fileDialogOptionsWidget.value()))  #selectedFilter  fileName, ok = QFileDialog.getSaveFileName(self,         "QFileDialog.getSaveFileName()",         self.label_saveFileName.text(),         "All Files (*);;Text Files (*.txt)")  if fileName:   self.label_saveFileName.setText(fileName) def criticalMessage(self):  #reply = QMessageBox.StandardButton()  MESSAGE = "批評！"  reply = QMessageBox.critical(self,         "QMessageBox.critical()",         MESSAGE,         QMessageBox.Abort | QMessageBox.Retry | QMessageBox.Ignore)  if reply == QMessageBox.Abort:   self.label_critical.setText("Abort")  elif reply == QMessageBox.Retry:   self.label_critical.setText("Retry")  else:   self.label_critical.setText("Ignore") def informationMessage(self):  MESSAGE = "信息"  reply = QMessageBox.information(self, "QMessageBox.information()", MESSAGE)  if reply == QMessageBox.Ok:   self.label_information.setText("OK")  else:   self.label_information.setText("Escape") def questionMessage(self):  MESSAGE = "疑問"  reply = QMessageBox.question(self, "QMessageBox.question()",         MESSAGE,         QMessageBox.Yes | QMessageBox.No | QMessageBox.Cancel)  if reply == QMessageBox.Yes:   self.label_question.setText("Yes")  elif reply == QMessageBox.No:   self.label_question.setText("No")  else:   self.label_question.setText("Cancel") def warningMessage(self):  MESSAGE = "警告文本"  msgBox = QMessageBox(QMessageBox.Warning,       "QMessageBox.warning()",        MESSAGE,        QMessageBox.Retry | QMessageBox.Discard | QMessageBox.Cancel,        self)  msgBox.setDetailedText("詳細信息。。。")  #msgBox.addButton("Save &Again", QMessageBox.AcceptRole)  #msgBox.addButton("&Continue", QMessageBox.RejectRole)  if msgBox.exec() == QMessageBox.AcceptRole:   self.label_warning.setText("Retry")  else:   self.label_warning.setText("Abort") def errorMessage(self):  self.errorMessageDialog.showMessage(     "This dialog shows and remembers error messages. "     "If the checkbox is checked (as it is by default), "     "the shown message will be shown again, "     "but if the user unchecks the box the message "     "will not appear again if QErrorMessage.showMessage() "     "is called with the same message.")  self.label_error.setText("If the box is unchecked, the message "        "won't appear again.")app=QApplication(sys.argv)form=StandardDialog()form.show()app.exec_()