pyqt5学习笔记(5) QDialog，QMessageBox
QDialog 学习笔记
QDialog继承自QWidget, 子类有 QColorDialog, QErrorMessage, QFileDialog, QFontDialog, QInputDialog, QMessageBox, QProgressDialog,QWizard
1 QDialog 类中常见方法
| 方法 | 简介 |
|---|---|
| setWindowModality | 设置模态 |
2 QMessageBox 类中常见方法
| 方法名 | 描述 |
|---|---|
| about | 弹出关于对话框 |
| critical | 弹出严重错误对话框 |
| information | 弹出消息对话框 |
| question | 弹出问答对话框 |
| warning | 弹出警告对话框 |
QMessageBox 标准按钮类型
| 类型 | 描述 |
|---|---|
| QMessageBox.Yes | 同意操作 |
| QMessageBox.No | 取消操作 |
| QMessageBox.Ok | 同意操作 |
| QMessageBox.Cancel | 取消操作 |
| QMessageBox.Abort | 终止操作 |
| QMessageBox.Retry | 重试操作 |
| QMessageBox.Ignore | 忽略操作 |
简单demo如下：
#!/usr/bin/env python3
# -*- coding:utf-8 -*-
# Author: Lancer 2020-05-08 08:45:33
from PyQt5.QtWidgets import QDialog,QMessageBox,QPushButton,QHBoxLayout,QVBoxLayout, QGridLayout,QWidget,QApplication
from PyQt5.QtCore import *
class QDialogDemo(QWidget):
def __init__(self):
super(QDialogDemo, self).__init__()
self.resize(800,600)
self.setWindowTitle("QDialog学习笔记")
mainlayout = QGridLayout()
self.setLayout(mainlayout)
self.btn01 = QPushButton("QDialog例子")
self.meg_btn01 = QPushButton("关于对话框")
self.meg_btn02 = QPushButton("严重错误对话框")
self.meg_btn03 = QPushButton("消息对话框")
self.meg_btn04 = QPushButton("问答对话框对话框")
self.meg_btn05 = QPushButton("警告对话框")
mainlayout.addWidget(self.btn01,0,0,1,1)# 第0行0列 占一行一列
mainlayout.addWidget(self.meg_btn01, 1, 0, 1, 1)
mainlayout.addWidget(self.meg_btn02, 1, 1, 1, 1)
mainlayout.addWidget(self.meg_btn03, 1, 2, 1, 1)
mainlayout.addWidget(self.meg_btn04, 1, 3, 1, 1)
mainlayout.addWidget(self.meg_btn05, 1, 4, 1, 1)
self.btn01.clicked.connect(self.showdialog)
self.meg_btn01.clicked.connect(self.show_about)
self.meg_btn02.clicked.connect(self.show_critical)
self.meg_btn03.clicked.connect(self.show_information)
self.meg_btn04.clicked.connect(self.show_question)
self.meg_btn05.clicked.connect(self.show_warning)
def showdialog(self):
dialog = QDialog()
dialog.setWindowTitle("Dialog")
dialog.resize(400,300)
dialog.setWindowModality(Qt.ApplicationModal) #设置窗口的属性为ApplicationModal模态，用户只有关闭弹窗后，才能关闭主界面
dialog.exec_()
def show_about(self):
QMessageBox.about(self, "标题", "关于对话框消息正文")
def show_critical(self):
QMessageBox.critical(self, "标题", "严重错误对话框消息正文", QMessageBox.Yes | QMessageBox.No|QMessageBox.Ignore, QMessageBox.Yes)
def show_information(self):
QMessageBox.information(self, '标题', '消息对话框正文', QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)
def show_question(self):
QMessageBox.question(self, "标题", "提问框消息正文", QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)
def show_warning(self):
QMessageBox.warning(self, "标题", "警告框消息正文", QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
test = QDialogDemo()
test.show()
sys.exit(app.exec_())
效果如下：
