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PyQt5 QDialog对话框(QMessageBox,QInputDialog,QFontDialog,QFileDialog,QColorDialog)QDialog类图QDialogQMessageBoxQInputDialogQFontDialogQFileDialogQColorDialog

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我是靠谱客的博主 辛勤仙人掌，最近开发中收集的这篇文章主要介绍PyQt5 QDialog对话框(QMessageBox,QInputDialog,QFontDialog,QFileDialog,QColorDialog)QDialog类图QDialogQMessageBoxQInputDialogQFontDialogQFileDialogQColorDialog，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

PyQt5 QDialog对话框

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

QDialog类图

在这里插入图片描述

QDialog

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class 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_())

在这里插入图片描述

QMessageBox

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class 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_())

在这里插入图片描述

QInputDialog

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class 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_())

在这里插入图片描述

QFontDialog

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class 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_())

在这里插入图片描述

QFileDialog

import sys

from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class 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_())

在这里插入图片描述

QColorDialog

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class 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_())

在这里插入图片描述

最后

以上就是辛勤仙人掌为你收集整理的PyQt5 QDialog对话框(QMessageBox,QInputDialog,QFontDialog,QFileDialog,QColorDialog)QDialog类图QDialogQMessageBoxQInputDialogQFontDialogQFileDialogQColorDialog的全部内容，希望文章能够帮你解决PyQt5 QDialog对话框(QMessageBox,QInputDialog,QFontDialog,QFileDialog,QColorDialog)QDialog类图QDialogQMessageBoxQInputDialogQFontDialogQFileDialogQColorDialog所遇到的程序开发问题。

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