PYQT5(二十五) QLabel自适应

Posted 2023-05-05

参考技术A LabelName->adjustSize();

LabelName->setGeometry(QRect(328, 240, 329, 27*4)); //四倍行距
LabelName->setWordWrap(true);
LabelName->setAlignment(Qt::AlignTop);

PyQt5 QLabel自定义右键弹出菜单

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

class MyLabel(QLabel):
    def __init__(self, *args, **kw):
        super().__init__(*args, **kw)
        self.setContextMenuPolicy(Qt.CustomContextMenu)
        self.customContextMenuRequested.connect(self.rightMenuShow)#开放右键策略

    def rightMenuShow(self, pos):   #添加右键菜单
            menu = QMenu(self)
            menu.addAction(QAction(‘动作1‘, menu))
            menu.addAction(QAction(‘动作2‘, menu))
            menu.addAction(QAction(‘动作3‘, menu))
            menu.triggered.connect(self.menuSlot)
            menu.exec_(QCursor.pos())
    
    def menuSlot(self, act):
        print(act.text())
        

class Demo(QWidget):
    def __init__(self, *args, **kw):
        super().__init__(*args, **kw)
        label = MyLabel(‘右击这里‘, self)
        label.setGeometry(0, 0 , 60, 30)

        self.resize(100,100)
        self.show()
        
if __name__ == ‘__main__‘:
    app = QApplication(sys.argv)
    ecs = Demo()
    sys.exit(app.exec_())