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https://github.com/muziing/PySide6-Code-Tutorial.git
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68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
import sys
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from PySide6 import QtWidgets
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"""
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QComboBox 数据获取
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除在条目操作1中已经介绍的按索引获取条目信息外，还可以之间获取当前条目等
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获取总条目数量
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.count() -> int
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获取条目的属性
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.itemData(index: int, role: int = Qt.UserRole) -> QVariant
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.itemDelegate() -> QAbstractItemDelegate
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.itemIcon(index: int) -> QIcon
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.itemText(index: int) -> str
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获取当前条目的属性
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.currentData(role: Qt.UserRole) -> QVariant
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.currentIndex() -> int
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.currentText() -> str
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查找文本或数据，返回匹配项的索引
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.findText(text: str, flags: Qt.MatchFlags) -> int
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.findData(data: QVariant, role: int = Qt.UserRole, flags: Qt.MatchFlags) -> int
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"""
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class MyWidget(QtWidgets.QWidget):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.setWindowTitle("QComboBox-数据获取")
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self.resize(800, 600)
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self.setup_ui()
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self.test()
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def setup_ui(self) -> None:
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"""设置界面"""
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self.cbb = QtWidgets.QComboBox(self)
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self.cbb.move(200, 200)
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self.cbb.resize(400, 60)
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self.cbb.addItems([str(i) for i in range(100, 110)]) # 通过列表推导式快速添加多个条目
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self.cbb.addItem("110", {"key": "value"}) # 将一个字典作为Data存入
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def test(self) -> None:
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"""测试获取数据功能"""
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# 获取最后一项的数据
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print(f"末项数据为：{self.cbb.itemData(self.cbb.count() - 1)}")
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# 测试获取当前项的属性
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self.cbb.currentIndexChanged.connect(lambda: print(f"当前文本为：{self.cbb.currentText()}")) # type: ignore
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self.cbb.currentIndexChanged.connect(lambda: print(f"当前数据为：{self.cbb.currentData()}")) # type: ignore
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self.cbb.currentIndexChanged.connect(lambda: print(f"当前索引为：{self.cbb.currentIndex()}")) # type: ignore
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# 测试查找功能
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index_102 = self.cbb.findText("102") # 查找文本为102的项，返回找到的索引
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print(self.cbb.itemText(index_102)) # 根据索引获取该项的文本
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if __name__ == "__main__":
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app = QtWidgets.QApplication(sys.argv)
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window = MyWidget()
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window.show()
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sys.exit(app.exec())
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