PyQt5 QDialog对话框

• QDialog类图
• QDialog
• QMessageBox
• QInputDialog
• QFontDialog
• QFileDialog
• QColorDialog

QDialog类图

QDialog

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qtclass MyDialogWindow(QMainWindow):def __init__(self, parent=None):super(MyDialogWindow, self).__init__(parent)self.setWindowTitle("Dialog Demo")self.resize(350, 300)self.btn = QPushButton(self)self.btn.setText("弹出对话框")self.btn.move(50, 50)self.btn.clicked.connect(self.showdialog)def showdialog(self):dialog = QDialog()btn = QPushButton("OK" ,dialog)btn.move(50, 50)dialog.setWindowTitle("Dialog")dialog.setWindowModality(Qt.ApplicationModal)dialog.exec_()if __name__ == "__main__":app = QApplication(sys.argv)win = MyDialogWindow()win.show()sys.exit(app.exec_())

QMessageBox

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qtclass MyMessageBox(QWidget):def __init__(self):super(MyMessageBox, self).__init__()self.setWindowTitle("QMessageBox Demo")self.resize(300, 300)layout = QVBoxLayout()self.btn1 = QPushButton()self.btn1.setText("弹出信息消息框")self.btn1.clicked.connect(lambda:self.showmessagebox(1))layout.addWidget(self.btn1)self.btn2 = QPushButton("弹出问答消息框", self)self.btn2.clicked.connect(lambda:self.showmessagebox(2))layout.addWidget(self.btn2)self.btn3 = QPushButton("弹出警告消息框", self)self.btn3.clicked.connect(lambda:self.showmessagebox(3))layout.addWidget(self.btn3)self.btn4 = QPushButton("弹出严重错误框", self)self.btn4.clicked.connect(lambda:self.showmessagebox(4))layout.addWidget(self.btn4)self.btn5 = QPushButton("弹出关于消息框", self)self.btn5.clicked.connect(lambda:self.showmessagebox(5))layout.addWidget(self.btn5)self.setLayout(layout)def showmessagebox(self, index):if index == 1:reply = QMessageBox.information(self, "信息标题", "信息消息正文", QMessageBox.Yes|QMessageBox.No, QMessageBox.Yes)print(reply)elif index == 2:reply = QMessageBox.question(self, "问答标题", "问答消息文本", QMessageBox.Ok|QMessageBox.Cancel, QMessageBox.Ok)print(reply)elif index == 3:reply =QMessageBox.warning(self, "警告标题", "警告消息内容", QMessageBox.Ok|QMessageBox.Cancel, QMessageBox.Ok)print(reply)elif index == 4:reply = QMessageBox.critical(self, "严重标题","严重错误消息内容", QMessageBox.Yes|QMessageBox.No, QMessageBox.Yes)print(reply)elif index == 5:reply = QMessageBox.about(self, "关于标题", "关于消息对话框文本")print(reply)if __name__ == "__main__":app = QApplication(sys.argv)win = MyMessageBox()win.show()sys.exit(app.exec_())

QInputDialog

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qtclass MyInputDialogWindow(QWidget):def __init__(self, parent=None):super(MyInputDialogWindow, self).__init__(parent)layout = QFormLayout()self.btn1 = QPushButton("获得列表里的选项")self.btn1.clicked.connect(self.getItem)self.le1 = QLineEdit()layout.addRow(self.btn1, self.le1)self.btn2 = QPushButton("获得字符串")self.btn2.clicked.connect(self.getText)self.le2 = QLineEdit()layout.addRow(self.btn2, self.le2)self.btn3 = QPushButton("获得整数")self.btn3.clicked.connect(self.getInt)self.le3 = QLineEdit()layout.addRow(self.btn3, self.le3)self.btn4 = QPushButton("获得浮点数")self.btn4.clicked.connect(self.getDouble)self.le4 = QLineEdit()layout.addRow(self.btn4, self.le4)self.setLayout(layout)self.resize(350, 300)self.setWindowTitle("QInputDialog Demo")def getItem(self):items = ("C", "C++", "Java", "Python", "C#")item, ok = QInputDialog.getItem(self, "select input dialog", "语言列表", items, 0, False)if ok and item:self.le1.setText(item)def getText(self):text, ok = QInputDialog.getText(self, 'Text Input Dialog', '输入姓名：')if ok:self.le2.setText(str(text))def getInt(self):num,ok = QInputDialog.getInt(self, "integer input dialog", "输入数字")if ok:self.le3.setText(str(num))def getDouble(self):num,ok = QInputDialog.getDouble(self, "double input dialog", "输入浮点数")if ok:self.le4.setText(str(num))if __name__ == "__main__":app = QApplication(sys.argv)win = MyInputDialogWindow()win.show()sys.exit(app.exec_())

QFontDialog

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qtclass MyFontDialogDemo(QWidget):def __init__(self, parent=None):super(MyFontDialogDemo, self).__init__(parent)layout = QVBoxLayout()self.fontButton = QPushButton("选择字体")self.fontButton.clicked.connect(self.getFont)layout.addWidget(self.fontButton)self.fontLineEdit = QLabel("Hello,测试字体Demo")layout.addWidget(self.fontLineEdit)self.setLayout(layout)self.setWindowTitle("Font Dialog Demo")def getFont(self):font, ok = QFontDialog.getFont()if ok:self.fontLineEdit.setFont(font)if __name__ == "__main__":app = QApplication(sys.argv)win = MyFontDialogDemo()win.show()sys.exit(app.exec_())

QFileDialog

import sysfrom PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qtclass filedialogDemo(QWidget):def __init__(self, parent=None):super(filedialogDemo, self).__init__(parent)layout = QVBoxLayout()self.btn = QPushButton("加载图片")self.btn.clicked.connect(self.getfile)layout.addWidget(self.btn)self.le = QLabel("")layout.addWidget(self.le)self.btn1 = QPushButton("加载文本文件")self.btn1.clicked.connect(self.getfiles)layout.addWidget(self.btn1)self.contents = QTextEdit()layout.addWidget(self.contents)self.setLayout(layout)self.setWindowTitle("File Dialog Demo")def getfile(self):fname, aa = QFileDialog.getOpenFileName(self, 'Open file', 'C:\\', "Image files (*.jpg *.gif)")self.le.setPixmap(QPixmap(fname))def getfiles(self):dlg = QFileDialog()dlg.setFileMode(QFileDialog.AnyFile)dlg.setFilter(QDir.Files)if dlg.exec_():filenames = dlg.selectedFiles()f = open(filenames[0], 'r')with f:data = f.read()self.contents.setText(data)f.close()if __name__ == "__main__":app = QApplication(sys.argv)win = filedialogDemo()win.show()sys.exit(app.exec_())

QColorDialog

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qtclass MyColorDialogWindow(QWidget):def __init__(self, parent=None):super(MyColorDialogWindow, self).__init__(parent)self.palette = QPalette()layout = QVBoxLayout()self.btn1 = QPushButton("设置背景颜色")self.btn1.clicked.connect(self.onSetBgColorClicked)layout.addWidget(self.btn1)self.btn2 = QPushButton("设置文本颜色")self.btn2.clicked.connect(self.onSetTxtColorClicked)layout.addWidget(self.btn2)self.label = QLabel("测试文本内容")self.label.setFixedSize(150, 50)self.label.setAlignment(Qt.AlignCenter)layout.addWidget(self.label)self.resize(380, 150)self.setWindowTitle("QColorDialog Demo")self.setLayout(layout)def onSetBgColorClicked(self):color = QColorDialog.getColor()self.palette.setColor(QPalette.Window, color)self.label.setAutoFillBackground(True)self.label.setPalette(self.palette)def onSetTxtColorClicked(self):color = QColorDialog.getColor()r,g,b,_ = color.getRgb()self.label.setStyleSheet("color:rgb({},{},{},255)".format(r,g,b))#self.palette.setColor(QPalette.WindowText, color)#self.label.setPalette(self.palette)if __name__ == "__main__":app = QApplication(sys.argv)win = MyColorDialogWindow()win.show()sys.exit(app.exec_())