QRadioButton

main.cpp

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
#include <QApplication>
#include <QWidget>
#include <QRadioButton>
#include <QGroupBox>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QLabel>
#include <QDebug>

void setupRadioButtonDemo(QWidget *parent) {
    QVBoxLayout *mainLayout = new QVBoxLayout(parent);

    // --- 1. 性别选择组 (QGroupBox 实现逻辑分组) ---
    QGroupBox *genderGroup = new QGroupBox("性别选择", parent);
    QHBoxLayout *genderLayout = new QHBoxLayout(genderGroup);

    QRadioButton *maleBtn = new QRadioButton("男", genderGroup);
    QRadioButton *femaleBtn = new QRadioButton("女", genderGroup);
    QRadioButton *otherBtn = new QRadioButton("保密", genderGroup);

    maleBtn->setChecked(true); // 设置默认选中

    genderLayout->addWidget(maleBtn);
    genderLayout->addWidget(femaleBtn);
    genderLayout->addWidget(otherBtn);

    // --- 2. 难度设置组 ---
    QGroupBox *diffGroup = new QGroupBox("游戏难度", parent);
    QVBoxLayout *diffLayout = new QVBoxLayout(diffGroup);

    QRadioButton *easyBtn = new QRadioButton("简单 (Easy)", diffGroup);
    QRadioButton *hardBtn = new QRadioButton("困难 (Hard)", diffGroup);

    diffLayout->addWidget(easyBtn);
    diffLayout->addWidget(hardBtn);

    // --- 3. 状态反馈 Label ---
    QLabel *statusLabel = new QLabel("当前选择：男 | 未设难度", parent);
    statusLabel->setStyleSheet("color: blue; font-weight: bold;");

    // --- 4. 信号处理 ---
    // 监听性别变化 (toggled 信号比 clicked 更常用，因为它在选中状态改变时触发)
    auto updateStatus = [=]() {
        QString gender = maleBtn->isChecked() ? "男" : (femaleBtn->isChecked() ? "女" : "保密");
        QString diff = easyBtn->isChecked() ? "简单" : (hardBtn->isChecked() ? "困难" : "未设");
        statusLabel->setText(QString("当前选择：%1 | 难度：%2").arg(gender).arg(diff));
    };

    QObject::connect(maleBtn, &QRadioButton::toggled, updateStatus);
    QObject::connect(femaleBtn, &QRadioButton::toggled, updateStatus);
    QObject::connect(otherBtn, &QRadioButton::toggled, updateStatus);
    QObject::connect(easyBtn, &QRadioButton::toggled, updateStatus);
    QObject::connect(hardBtn, &QRadioButton::toggled, updateStatus);

    mainLayout->addWidget(genderGroup);
    mainLayout->addWidget(diffGroup);
    mainLayout->addWidget(statusLabel);
    mainLayout->addStretch();
}

int main(int argc, char *argv[]) {
    QApplication a(argc, argv);
    QWidget w;
    w.setWindowTitle("QRadioButton 互斥选择演示");
    w.resize(350, 400);
    setupRadioButtonDemo(&w);
    w.show();
    return a.exec();
}