PyQ5基本窗口控件详解

import os import sys from PyQt5.QtCore import QMimeData from PyQt5.QtWidgets import (QApplication, QDialog, QGridLayout, QLabel, QPushButton) from PyQt5.QtGui import QPixmap class Form(QDialog): def __init__(self, parent=None): super(Form, self).__init__(parent) #创建复制粘贴按钮，并添加快捷键 textCopyButton = QPushButton("&Copy Text") textPasteButton = QPushButton("Paste &Text") htmlCopyButton = QPushButton("C&opy HTML") htmlPasteButton = QPushButton("Paste &HTML") imageCopyButton = QPushButton("Co&py Image") imagePasteButton = QPushButton("Paste &Image") #创建文本标签和图像标签，显示文本和图像 self.textLabel = QLabel("Original text") self.imageLabel = QLabel() self.imageLabel.setPixmap(QPixmap(os.path.join( os.path.dirname(__file__), "E:\pyqt5快速开发与实战\第四章\images\python.png"))) #设置栅格布局，并添加部件到相应的位置 layout = QGridLayout() layout.addWidget(textCopyButton, 0, 0) layout.addWidget(imageCopyButton, 0, 1) layout.addWidget(htmlCopyButton, 0, 2) layout.addWidget(textPasteButton, 1, 0) layout.addWidget(imagePasteButton, 1, 1) layout.addWidget(htmlPasteButton, 1, 2) layout.addWidget(self.textLabel, 2, 0, 1, 2) layout.addWidget(self.imageLabel, 2, 2) #设置主窗口的布局，自定义槽函数，设置标题 self.setLayout(layout) textCopyButton.clicked.connect(self.copyText) textPasteButton.clicked.connect(self.pasteText) htmlCopyButton.clicked.connect(self.copyHtml) htmlPasteButton.clicked.connect(self.pasteHtml) imageCopyButton.clicked.connect(self.copyImage) imagePasteButton.clicked.connect(self.pasteImage) self.setWindowTitle("Clipboard 例子") def copyText(self): #实例化剪切板，设置剪切板的文本 clipboard = QApplication.clipboard() clipboard.setText("I've been clipped!") def pasteText(self): #实例化剪切板，标签设置为剪切板的文本并显示 clipboard = QApplication.clipboard() self.textLabel.setText(clipboard.text()) def copyImage(self): #实例化剪切板，设置剪切板加载的图想路径 clipboard = QApplication.clipboard() clipboard.setPixmap(QPixmap(os.path.join( os.path.dirname(__file__), "./images/python.png"))) def pasteImage(self): #实例化剪切板，z设置图像标签的图片加载，从剪切板获取路径 clipboard = QApplication.clipboard() self.imageLabel.setPixmap(clipboard.pixmap()) def copyHtml(self): #实例化MimeData数据类型，设置类型Html的文本 mimeData = QMimeData() mimeData.setHtml("<b>Bold and <font color=red>Red</font></b>") #实例化剪切板，设置MimeData的初值文本 clipboard = QApplication.clipboard() clipboard.setMimeData(mimeData) def pasteHtml(self): #实例化剪切板，，获取MimeData的数据，并设置为标签的文本值 clipboard = QApplication.clipboard() mimeData = clipboard.mimeData() if mimeData.hasHtml(): self.textLabel.setText(mimeData.html()) if __name__ == "__main__": app = QApplication(sys.argv) form = Form() form.show() sys.exit(app.exec_())