PyQt5 QCalendarWidget – 设置鼠标移动事件

在本文中，我们将了解如何为 QCalendarWidget 实现鼠标移动事件。这个事件处理程序，对于事件事件，可以在子类中重新实现，以接收小部件的鼠标移动事件。如果鼠标跟踪关闭，鼠标移动事件仅在鼠标移动时按下鼠标按钮时发生。如果打开鼠标跟踪，即使没有按下鼠标按钮，也会发生鼠标移动事件。

Implementation steps:
1. Create a Calendar class that inherits the QCalendarWidget
2. Create alabel to show the updates
3. Override the mouseMoveEvent and set the position to the label
4. Create a Calendar object inside the main window
5. Set various properties to the calendar

编程需要懂一点英语

下面是实现

Python3

# importing libraries
from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys
 
# QCalendarWidget Class
class Calendar(QCalendarWidget):
 
    # constructor
    def __init__(self, parent = None):
        super(Calendar, self).__init__(parent)
        self.setMouseTracking(True)
 
 
class Window(QMainWindow):
 
    def __init__(self):
        super().__init__()
 
        # setting title
        self.setWindowTitle("Python ")
 
        # setting geometry
        self.setGeometry(100, 100, 650, 400)
 
        # calling method
        self.UiComponents()
 
        # showing all the widgets
        self.show()
 
 
    # method for components
    def UiComponents(self):
 
        # creating a QCalendarWidget object
        # as Calendar class inherits QCalendarWidget
        self.calendar = Calendar(self)
 
        # turing on the mouse tracking
        self.setMouseTracking(True)
 
        # setting geometry to the calendar
        self.calendar.setGeometry(50, 10, 250, 250)
 
        # setting cursor
        self.calendar.setCursor(Qt.PointingHandCursor)
 
        # creating label to show the properties
        self.label = QLabel(self)
 
        # setting geometry to the label
        self.label.setGeometry(100, 280, 250, 60)
 
        # making label multi line
        self.label.setWordWrap(True)
 
    def mouseMoveEvent(self, event):
        self.label.setText('coords: ( % d : % d )' % (event.x(), event.y()))
 
 
 
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())

输出：