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PyQt5 QCalendarWidget 释放抓取的键盘输入

  • Post category:Python

要释放PyQt5中的QCalendarWidget的捕获键盘输入，可以使用QCalendarWidget类中的releaseKeyboard()方法。

具体步骤如下：

  1. 导入必要的模块
from PyQt5.QtWidgets import QApplication, QCalendarWidget, QWidget, QVBoxLayout
from PyQt5.QtGui import QKeyEvent
from PyQt5.QtCore import Qt
  1. 创建一个QCalendarWidget和一个QWidget，并将QCalendarWidget添加到QWidget中
app = QApplication([])
widget = QWidget()

calendar = QCalendarWidget(widget)

layout = QVBoxLayout()
layout.addWidget(calendar)

widget.setLayout(layout)
widget.show()
  1. 为QWidget添加一个键盘事件处理函数，当监听到特定按键时，使用releaseKeyboard()方法释放QCalendarWidget的键盘输入
def keyPressEvent(self, event: QKeyEvent):
    if event.key() == Qt.Key_Escape:
        self.calendar.releaseKeyboard()

完整代码示例：

from PyQt5.QtWidgets import QApplication, QCalendarWidget, QWidget, QVBoxLayout
from PyQt5.QtGui import QKeyEvent
from PyQt5.QtCore import Qt


class Widget(QWidget):
    def __init__(self):
        super().__init__()

        self.calendar = QCalendarWidget(self)

        layout = QVBoxLayout()
        layout.addWidget(self.calendar)

        self.setLayout(layout)

    def keyPressEvent(self, event: QKeyEvent):
        if event.key() == Qt.Key_Escape:
            self.calendar.releaseKeyboard()


app = QApplication([])
widget = Widget()
widget.show()
app.exec_()

另一个示例是，使用QCalendarWidget类中的installEventFilter()方法，复写eventFilter()函数，监听鼠标点击事件，当监听到特定按钮被点击时，使用releaseKeyboard()方法释放QCalendarWidget的键盘输入。

完整代码示例：

from PyQt5.QtWidgets import QApplication, QCalendarWidget, QWidget, QVBoxLayout
from PyQt5.QtGui import QKeyEvent
from PyQt5.QtCore import Qt, QObject, QEvent


class Widget(QWidget):
    def __init__(self):
        super().__init__()

        self.calendar = QCalendarWidget(self)

        layout = QVBoxLayout()
        layout.addWidget(self.calendar)

        self.setLayout(layout)
        self.installEventFilter(self)

    def eventFilter(self, obj: QObject, event: QEvent):
        if obj == self.calendar:
            if event.type() == QEvent.MouseButtonPress and \
                    self.calendar.geometry().contains(event.pos()):
                button = self.calendar.childAt(event.pos())
                if button.isEnabled() and button.text() == "重置":
                    self.calendar.releaseKeyboard()

        return super().eventFilter(obj, event)


app = QApplication([])
widget = Widget()
widget.show()
app.exec_()
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