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PyQt5之QClipboard剪贴板

QClipboard类提供了对系统剪贴板的访问，可以在应用程序之间复制和粘贴数据。QApplication类有一个静态方法clipboard(),它返回对剪贴板对象的引用。

一、QClipboard类中的常用方法

二、QClipboard类中的常用信号

三、QClipboard的使用

import sys,mathfrom PyQt5.QtWidgets import *from PyQt5.QtGui import *from PyQt5.QtCore import *class Win(QDialog):    def __init__(self):        super().__init__()        self.setGeometry(300, 300,400, 380)        self.setWindowTitle('QClipboard的使用')        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')        self.textLabel = QLabel('Original text')        self.imageLabel = QLabel()        self.imageLabel.setPixmap(QPixmap('head1.jpg'))        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)        self.setLayout(layout)        textCopyButton.clicked.connect(self.copyText)         textPasteButton.clicked.connect(self.pasteText)        imageCopyButton.clicked.connect(self.copyImage)        imagePasteButton.clicked.connect(self.pasteImage)        htmlCopyButton.clicked.connect(self.copyHTML)        htmlPasteButton.clicked.connect(self.pasteHTML)    def copyText(self): #复制文本        clipboard = QApplication.clipboard()        clipboard.setText("I've been clipped")    def pasteText(self): #粘贴文本        clipboard = QApplication.clipboard()        self.textLabel.setText(clipboard.text())    def copyImage(self): #复制图像        clipboard = QApplication.clipboard()        clipboard.setPixmap(QPixmap('head1.jpg'))    def pasteImage(self): #粘贴图像        clipboard = QApplication.clipboard()        self.imageLabel.setPixmap(clipboard.pixmap())    def copyHTML(self): #复制HTML文本        clipboard = QApplication.clipboard()        mimeData = QMimeData()        mimeData.setHtml('Bold and Red')        clipboard.setMimeData(mimeData)    def pasteHTML(self): #粘贴HTML文本        clipboard = QApplication.clipboard()        mimeData = clipboard.mimeData()        if mimeData.hasHtml():            self.textLabel.setText(mimeData.html())if __name__ == "__main__":    app = QApplication(sys.argv)    form = Win()    form.show()    sys.exit(app.exec_())

运行效果如下：

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