PyQt5基本控件使用之消息弹出、用户输入、文件对话框的使用方法

# -*- coding: utf-8 -*-
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow, QMessageBox
class Ui_Form(object):
  def setupUi(self, Form):
    Form.setObjectName("Form")
    Form.resize(431, 166)
    self.pushButton = QtWidgets.QPushButton(Form)
    self.pushButton.setGeometry(QtCore.QRect(160, 50, 91, 41))
    font = QtGui.QFont()
    font.setFamily("YaHei Consolas Hybrid")
    font.setPointSize(10)
    self.pushButton.setFont(font)
    self.pushButton.setObjectName("pushButton")
    self.retranslateUi(Form)
    QtCore.QMetaObject.connectSlotsByName(Form)
  def retranslateUi(self, Form):
    _translate = QtCore.QCoreApplication.translate
    Form.setWindowTitle(_translate("Form", "对话框"))
    self.pushButton.setText(_translate("Form", "弹出对话框"))
class MyMainForm(QMainWindow, Ui_Form):
  def __init__(self, parent=None):
    super(MyMainForm, self).__init__(parent)
    self.setupUi(self)
    self.pushButton.clicked.connect(self.showMsg)
  def showMsg(self):
    QMessageBox.information(self, '信息提示对话框','前方右拐到达目的地',QMessageBox.Yes | QMessageBox.No,QMessageBox.Yes)
    QMessageBox.question(self, "提问对话框", "你要继续搞测试吗？", QMessageBox.Yes | QMessageBox.No)
    QMessageBox.warning(self, "警告对话框", "继续执行会导致系统重启，你确定要继续？", QMessageBox.Yes | QMessageBox.No)
    QMessageBox.critical(self, "严重错误对话框", "数组越界，程序异常退出", QMessageBox.Yes | QMessageBox.No,)
    QMessageBox.about(self, "关于对话框", "你的Windows系统是DOS1.0")
if __name__ == "__main__":
  app = QApplication(sys.argv)
  myWin = MyMainForm()
  myWin.show()
  sys.exit(app.exec_())

# -*- coding: utf-8 -*-
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow, QMessageBox,QInputDialog
class Ui_Form(object):
  def setupUi(self, Form):
    Form.setObjectName("Form")
    Form.resize(382, 190)
    font = QtGui.QFont()
    font.setPointSize(9)
    font.setBold(False)
    font.setWeight(50)
    Form.setFont(font)
    self.GetIntlineEdit = QtWidgets.QLineEdit(Form)
    self.GetIntlineEdit.setGeometry(QtCore.QRect(150, 30, 150, 31))
    self.GetIntlineEdit.setText("")
    self.GetIntlineEdit.setObjectName("GetIntlineEdit")
    self.GetstrlineEdit = QtWidgets.QLineEdit(Form)
    self.GetstrlineEdit.setGeometry(QtCore.QRect(150, 80, 150, 31))
    self.GetstrlineEdit.setObjectName("GetstrlineEdit")
    self.GetItemlineEdit = QtWidgets.QLineEdit(Form)
    self.GetItemlineEdit.setGeometry(QtCore.QRect(150, 130, 150, 31))
    self.GetItemlineEdit.setObjectName("GetItemlineEdit")
    self.getIntButton = QtWidgets.QPushButton(Form)
    self.getIntButton.setGeometry(QtCore.QRect(50, 30, 80, 31))
    self.getIntButton.setObjectName("getIntButton")
    self.getStrButton = QtWidgets.QPushButton(Form)
    self.getStrButton.setGeometry(QtCore.QRect(50, 80, 80, 31))
    self.getStrButton.setObjectName("getStrButton")
    self.getItemButton = QtWidgets.QPushButton(Form)
    self.getItemButton.setGeometry(QtCore.QRect(50, 130, 80, 31))
    self.getItemButton.setObjectName("getItemButton")
    self.retranslateUi(Form)
    QtCore.QMetaObject.connectSlotsByName(Form)
  def retranslateUi(self, Form):
    _translate = QtCore.QCoreApplication.translate
    Form.setWindowTitle(_translate("Form", "QInputDialog例子"))
    self.getIntButton.setText(_translate("Form", "获取整数"))
    self.getStrButton.setText(_translate("Form", "获取字符串"))
    self.getItemButton.setText(_translate("Form", "获取列表选项"))
class MyMainForm(QMainWindow, Ui_Form):
  def __init__(self, parent=None):
    super(MyMainForm, self).__init__(parent)
    self.setupUi(self)
    self.getIntButton.clicked.connect(self.getInt)
    self.getStrButton.clicked.connect(self.getStr)
    self.getItemButton.clicked.connect(self.getItem)
  def getInt(self):
    num, ok = QInputDialog.getInt(self, 'Integer input dialog', '输入数字')
    if ok and num:
      self.GetIntlineEdit.setText(str(num))
  def getStr(self):
    text, ok=QInputDialog.getText(self, 'Text Input Dialog', '输入姓名：')
    if ok and text:
      self.GetstrlineEdit.setText(str(text))
  def getItem(self):
    items=('C', 'C++', 'C#', 'JAva', 'Python')
    item, ok=QInputDialog.getItem(self, "select input dialog", '语言列表', items, 0, False)
    if ok and item:
      self.GetItemlineEdit.setText(str(item))
if __name__ == "__main__":
  app = QApplication(sys.argv)
  myWin = MyMainForm()
  myWin.show()
  sys.exit(app.exec_())

# -*- coding: utf-8 -*-
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow, QMessageBox,QInputDialog,QFileDialog
class Ui_Form(object):
  def setupUi(self, Form):
    Form.setObjectName("Form")
    Form.resize(443, 120)
    self.widget = QtWidgets.QWidget(Form)
    self.widget.setGeometry(QtCore.QRect(50, 40, 301, 25))
    self.widget.setObjectName("widget")
    self.horizontalLayout = QtWidgets.QHBoxLayout(self.widget)
    self.horizontalLayout.setContentsMargins(0, 0, 0, 0)
    self.horizontalLayout.setObjectName("horizontalLayout")
    self.openFileButton = QtWidgets.QPushButton(self.widget)
    self.openFileButton.setObjectName("openFileButton")
    self.horizontalLayout.addWidget(self.openFileButton)
    self.filePathlineEdit = QtWidgets.QLineEdit(self.widget)
    self.filePathlineEdit.setObjectName("filePathlineEdit")
    self.horizontalLayout.addWidget(self.filePathlineEdit)
    self.retranslateUi(Form)
    QtCore.QMetaObject.connectSlotsByName(Form)
  def retranslateUi(self, Form):
    _translate = QtCore.QCoreApplication.translate
    Form.setWindowTitle(_translate("Form", "QFileDialog打开文件例子"))
    self.openFileButton.setText(_translate("Form", "打开文件"))
class MyMainForm(QMainWindow, Ui_Form):
  def __init__(self, parent=None):
    super(MyMainForm, self).__init__(parent)
    self.setupUi(self)
    self.openFileButton.clicked.connect(self.openFile)
  def openFile(self):
    get_directory_path = QFileDialog.getExistingDirectory(self,
                  "选取指定文件夹",
                  "C:/")
    self.filePathlineEdit.setText(str(get_directory_path))
    get_filename_path, ok = QFileDialog.getOpenFileName(self,
                  "选取单个文件",
                  "C:/",
                  "All Files (*);;Text Files (*.txt)")
    if ok:
      self.filePathlineEdit.setText(str(get_filename_path))
    get_filenames_path, ok = QFileDialog.getOpenFileNames(self,
                  "选取多个文件",
                  "C:/",
                  "All Files (*);;Text Files (*.txt)")
    if ok:
      self.filePathlineEdit.setText(str(' '.join(get_filenames_path)))
if __name__ == "__main__":
  app = QApplication(sys.argv)
  myWin = MyMainForm()
  myWin.show()
  sys.exit(app.exec_())