PyQt5 QCalendarWidget 设置鼠标移动事件

在这篇文章中，我们将看到我们如何为QCalendarWidget实现鼠标移动事件。这个事件处理程序，对于事件的处理，可以在子类中重新实现，以接收小工具的鼠标移动事件。如果鼠标跟踪被关闭，鼠标移动事件只发生在鼠标被移动时按下鼠标按钮。如果鼠标跟踪被打开，即使没有按下鼠标按钮，也会发生鼠标移动事件。

实施步骤：
1.创建一个继承于QCalendarWidget的日历类
2.创建一个标签来显示更新
3.覆盖mouseMoveEvent并将位置设置为标签
4.在主窗口内创建一个日历对象
5.为日历设置各种属性

下面是实现

# 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())