def initFrom(widget: QWidget) -> None

option = QStyleOptionViewItem()
option.initFrom(self)  # 從委托對(duì)象繼承基礎(chǔ)樣式

# 設(shè)置文本顏色
option.palette.setColor(QPalette.Text, QColor("red"))

# 獲取項(xiàng)是否被選中
is_selected = option.state & QStyle.State_Selected

from PyQt5.QtWidgets import QStyledItemDelegate, QStyleOptionViewItem
from PyQt5.QtGui import QPainter, QColor, QFont
from PyQt5.QtCore import Qt

class CustomDelegate(QStyledItemDelegate):
    def paint(self, painter, option, index):
        # 初始化樣式選項(xiàng)
        option = QStyleOptionViewItem(option)
        self.initStyleOption(option, index)

        # 修改樣式：選中項(xiàng)背景色和字體加粗
        if option.state & QStyle.State_Selected:
            option.backgroundBrush = QColor("#E3F2FD")
            option.font.setBold(True)

        # 調(diào)用父類方法繼續(xù)渲染（或完全自定義繪制）
        super().paint(painter, option, index)

def paint(self, painter, option, index):
    # 初始化樣式選項(xiàng)
    option = QStyleOptionViewItem(option)
    self.initStyleOption(option, index)

    # 保存畫筆狀態(tài)
    painter.save()

    # 繪制背景
    if option.state & QStyle.State_Selected:
        painter.fillRect(option.rect, QColor("#E3F2FD"))
    else:
        painter.fillRect(option.rect, option.backgroundBrush)

    # 繪制圖標(biāo)
    icon_rect = option.rect.adjusted(5, 5, -5, -5)
    icon_rect.setWidth(32)
    option.icon.paint(painter, icon_rect, Qt.AlignLeft)

    # 繪制文本
    text_rect = option.rect.adjusted(40, 0, -5, 0)
    painter.setFont(option.font)
    painter.setPen(option.palette.color(QPalette.Text))
    painter.drawText(text_rect, option.textAlignment, option.text)

    # 恢復(fù)畫筆狀態(tài)
    painter.restore()