pyside6常用控件:QCheckBox() 单个复选框、多个复选框、三态模式

梨轻巧2025-11-04 16:44

单个复选框

python 复制代码

from PySide6.QtWidgets import QApplication, QWidget, QCheckBox, QVBoxLayout, QLabel

app = QApplication()

win = QWidget()
win.setWindowTitle("QCheckBox 单个复选框 示例")

label = QLabel("状态:", win)
label.resize(200, 20)
label.move(20, 80)

checkbox = QCheckBox("我同意用户协议", win)
checkbox.resize(200, 20)
checkbox.move(20, 20)

def on_state_changed(state):
    if state == 2:  # 2 = 选中
        label.setText("状态：已选中")
    else:  # 0 = 未选中
        label.setText("状态：未选中")

checkbox.stateChanged.connect(on_state_changed)


win.show()

app.exec()

多个复选框

python 复制代码

from PySide6.QtWidgets import QApplication, QWidget, QCheckBox, QLabel

app = QApplication()

win = QWidget()
win.setWindowTitle("多选示例")
win.resize(300, 200)

label = QLabel("你的选择：", win)
label.resize(300, 30)
label.move(30, 20)

cb1 = QCheckBox("苹果", win)
cb1.move(30, 60)

cb2 = QCheckBox("香蕉", win)
cb2.move(30, 90)

cb3 = QCheckBox("橙子", win)
cb3.move(30, 120)

def update_choice():
    choices = []
    if cb1.isChecked():
        choices.append("苹果")
    if cb2.isChecked():
        choices.append("香蕉")
    if cb3.isChecked():
        choices.append("橙子")
    label.setText("你的选择：" + "、".join(choices) if choices else "未选择")

cb1.stateChanged.connect(update_choice)
cb2.stateChanged.connect(update_choice)
cb3.stateChanged.connect(update_choice)

win.show()
app.exec()

三态模式

python 复制代码

from PySide6.QtWidgets import QApplication, QCheckBox
app = QApplication()


checkbox = QCheckBox("三态复选框")
# 开启三态模式
checkbox.setTristate(True)
checkbox.resize(200, 50)
checkbox.move(50, 50)


def state_show(state):
    print(f'state:{state}')

checkbox.stateChanged.connect(state_show)

checkbox.show()
app.exec()