button_layout = QGridLayout() button1 = QPushButton('当日员工工资') button1.setFixedSize(200, 50) button1.setStyleSheet('QPushButton {background-color: #A3C1DA; color: black; font-weight: bold;}') button1.clicked.connect(self.show_query1_result) button_layout.addWidget(button1, 0, 0) button2 = QPushButton('当日鸡爪领取记录') button2.setFixedSize(200, 50) button2.setStyleSheet('QPushButton {background-color: #A3C1DA; color: black; font-weight: bold;}') button2.clicked.connect(self.show_query2_result) button_layout.addWidget(button2, 0, 1) button3 = QPushButton('查询历史员工工资') button3.setFixedSize(200, 50) button3.setStyleSheet('QPushButton {background-color: #A3C1DA; color: black; font-weight: bold;}') button3.clicked.connect(self.show_query3_result) button_layout.addWidget(button3, 1, 0) button4 = QPushButton('查询历史鸡爪领取记录') button4.setFixedSize(200, 50) button4.setStyleSheet('QPushButton {background-color: #A3C1DA; color: black; font-weight: bold;}') button4.clicked.connect(self.show_query4_result) button_layout.addWidget(button4, 1, 1) button5 = QPushButton('按员工ID查询员工工资') button5.setFixedSize(200, 50) button5.setStyleSheet('QPushButton {background-color: #A3C1DA; color: black; font-weight: bold;}') button5.clicked.connect(self.show_query5_result) button_layout.addWidget(button5, 2, 0) button6 = QPushButton('按员工ID查询鸡爪领取记录') button6.setFixedSize(200, 50) button6.setStyleSheet('QPushButton {background-color: #A3C1DA; color: black; font-weight: bold;}') button6.clicked.connect(self.show_query6_result) button_layout.addWidget(button6, 2, 1) button_layout.setColumnStretch(2, 1) # 添加空白列来填充布局 v_layout = QVBoxLayout() v_layout.addStretch() # 添加弹性空间，使按钮布局垂直居中 v_layout.addLayout(button_layout) v_layout.addStretch()，其中self.setStyleSheet( """ QPushButton { background-color: #A3C1DA; color: black; font-weight: bold; border-radius: 5px; border: 2px solid #555555; padding: 5px; } QPushButton:hover { background-color: #C9E2F3; color: #555555; } """ )该加在什么地方

这段代码是用来设置按钮的样式，应该在创建按钮之后、添加到布局之前进行设置。可以放在其他初始化操作的代码块中，比如在__init__函数中设置。例如：

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

        # 初始化其他控件

        # 设置按钮样式
        self.setStyleSheet(
            """
            QPushButton {
                background-color: #A3C1DA;
                color: black;
                font-weight: bold;
                border-radius: 5px;
                border: 2px solid #555555;
                padding: 5px;
            }
            QPushButton:hover {
                background-color: #C9E2F3;
                color: #555555;
            }
            """
        )

        # 将按钮添加到布局中
        button_layout = QGridLayout()
        button1 = QPushButton('当日员工工资')
        # 设置按钮大小和样式
        button1.setFixedSize(200, 50)
        button1.setStyleSheet('QPushButton {background-color: #A3C1DA; color: black; font-weight: bold;}')
        button1.clicked.connect(self.show_query1_result)
        button_layout.addWidget(button1, 0, 0)
        # 添加其他按钮到布局
        v_layout = QVBoxLayout()
        v_layout.addStretch()
        v_layout.addLayout(button_layout)
        v_layout.addStretch()
        self.setLayout(v_layout)