PyQt4 日历小部件 - 突出显示每个月的 1 日和 15 日

Question

很难让 PyQt4 日历小部件突出显示每个月的 1 日和 15 日。不幸的是，没有太多关于这方面的文档，所以任何帮助都会很棒。 Example: Red box around the 5th of the month every month

Answer 1

您必须从 QCalendarWidget 继承并覆盖 paintCell 方法：

QCalendarWidget.paintCell(painter, rect, date)

参数：

画家——QtGui.QPainter

rect – QtCore.QRect

日期 – QtCore.QDate

对不起，我用的是 PyQt5

import sys
from PyQt5.QtCore    import Qt, QRectF
from PyQt5.QtGui     import QPainter
from PyQt5.QtWidgets import QCalendarWidget, QApplication

class CalendarWidget(QCalendarWidget):
    def paintCell(self, painter, rect, date):
        painter.setRenderHint(QPainter.Antialiasing, True)
        if (date.day() == 1) or (date.day() == 15):
            painter.save()
            painter.drawRect(rect)
            painter.setPen(Qt.blue)
            painter.drawText(QRectF(rect), Qt.TextSingleLine|Qt.AlignCenter, str(date.day()))
            painter.restore()
        else:
            QCalendarWidget.paintCell(self, painter, rect, date)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = CalendarWidget()
    w.show()
    sys.exit(app.exec_())