PyQt5 QLabel标签

• 标签显示
• 标签快捷键功能

标签显示

QLabel背景色设置：
palette = QPalette() # 创建调色板
palette.setColor(QPalette.Window, Qt.green) # 设置调色板属性
label.setPalette(palette) # 标签设置Palette
label.setAutoFillBackground(True) # 设为True设置的Palette才会生效

QLabel鼠标单击和鼠标划过事件：
label.linkActivated.connect(self.link_clicked) # 鼠标单击
label.linkHovered.connect(self.link_hovered) # 鼠标划过

QLabel设置是否允许启动浏览器打开超链：
label.setOpenExternalLinks(True)

import sysfrom PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *class MyLableWindow(QWidget):def __init__(self):super().__init__()self.setGeometry(0, 0, 800, 600)self.setWindowTitle("QLable Demo")self.setWindowIcon(QIcon("./pyqt5/close.png"))screen = QDesktopWidget().screenGeometry()size = self.geometry()self.move((screen.width() - size.width())/2, (screen.height() - size.height())/2)self.initUI()def initUI(self):label1 = QLabel(self)label2 = QLabel(self)label3 = QLabel(self)label4 = QLabel(self)label1.setText("这是一个文本标签")label1.setAutoFillBackground(True)palette = QPalette()palette.setColor(QPalette.Window, Qt.green)label1.setPalette(palette)label1.setAlignment(Qt.AlignCenter)label2.setText("人生苦短我用Python")label2.linkActivated.connect(self.link_clicked)label2.linkHovered.connect(self.link_hovered)label3.setAlignment(Qt.AlignCenter)label3.setToolTip("这是一个图片标签")label3.setToolTipDuration(3000)label3.setPixmap(QPixmap("./pyqt5/images/big_btn.png"))label4.setText("PyQt5 Document")label4.setAlignment(Qt.AlignLeft)label4.setToolTip("这是一个超链接标签")label4.setToolTipDuration(3000)# 允许访问超链接label4.setOpenExternalLinks(True)label4.linkActivated.connect(self.link_clicked)# setOpenExternalLinks 设置为True 不会触发linkActivatedlabel4.linkHovered.connect(self.link_hovered)vbox = QVBoxLayout()vbox.addWidget(label1)vbox.addStretch()vbox.addWidget(label2)vbox.addStretch()vbox.addWidget(label3)vbox.addStretch()vbox.addWidget(label4)self.setLayout(vbox)def link_hovered(self):print("鼠标划过标签")def link_clicked(self):print("鼠标点击标签")if __name__ == "__main__":app = QApplication(sys.argv)win = MyLableWindow()win.show()sys.exit(app.exec_())

标签快捷键功能

nameLb1 = QLabel(‘&Name’, self) # 注意必须是’&'符开头
nameEd1 = QLineEdit(self)
nameLb1.setBuddy(nameEd1) # 设置为伙伴关系， 按“Alt+N”可以切换到nameEd1文本框

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *class MyLabelWindow(QDialog):def __init__(self):super().__init__()#self.resize(800, 600)self.setWindowIcon(QIcon("./pyqt5/images/circel_btn_tap.png"))self.setWindowTitle("QLabel标签快捷键使用")screen = QDesktopWidget().screenGeometry()size = self.geometry()self.move((screen.width() - size.width())/2, (screen.height() - size.height())/2)self.initUI()def initUI(self):nameLb1 = QLabel('&Name', self)nameEd1 = QLineEdit(self)nameLb1.setBuddy(nameEd1)   # 设置为伙伴关系， 按“Alt+N”可以切换到nameEd1文本框nameLb2 = QLabel('&Password', self)nameEd2 = QLineEdit(self)nameLb2.setBuddy(nameEd2)btnOk = QPushButton('&Ok')btnCancel = QPushButton('&Cancel')mLayout = QGridLayout(self)mLayout.addWidget(nameLb1, 0, 0)mLayout.addWidget(nameEd1, 0, 1, 1,2)mLayout.addWidget(nameLb2, 1, 0)mLayout.addWidget(nameEd2, 1, 1, 1,2)mLayout.addWidget(btnOk, 2, 1)mLayout.addWidget(btnCancel, 2, 2)if __name__ == "__main__":app = QApplication(sys.argv)win = MyLabelWindow()win.show()sys.exit(app.exec_())