QCombox绑定QMap

news2024/10/23 2:38:56

使用QCombox, Item带图标

foreach遍历QMap<key,value> 添加QCombox的Item ，带图标，显示城市名称，userData中存入区号

使用QCombox的on_comboxCityZone_currentIndexChanged事件，打印combox的text，currentData

布局

.cpp

#include "comboxexample.h"
#include "ui_comboxexample.h"

ComBoxExample::ComBoxExample(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::ComBoxExample)
{
    ui->setupUi(this);
}

ComBoxExample::~ComBoxExample()
{
    delete ui;
}

void ComBoxExample::on_btnIniItems_clicked()
{
    QIcon icon;
    icon.addFile("://images/icon.bmp");
    for(int i=0;i<10;i++)
    {
        ui->comboxCity->addItem(icon,QString("Item%1").arg(i));
    }
}


void ComBoxExample::on_btnClearItems_clicked()
{
    ui->comboxCity->clear();
}


void ComBoxExample::on_chkEditable_clicked(bool checked)
{
    ui->chkEditable->setChecked(checked);
}


void ComBoxExample::on_comboxCity_currentTextChanged(const QString &arg1)
{
    ui->plainTextEdit->appendPlainText(arg1);
}


void ComBoxExample::on_btnIniCityZone_clicked()
{
    QMap<QString,QString> CityZones;     //QMap<key,value>
    CityZones.insert("0579","金华市");
    CityZones.insert("010","北京");
    CityZones.insert("021","上海");
    CityZones.insert("022","天津");
    CityZones.insert("0532","青岛");
    CityZones.insert("0411","大连");
    CityZones.insert("0416","锦州");
    CityZones.insert("0516","徐州");
    CityZones.insert("0591","福州");

    ui->comboxCityZone->clear();
    QIcon icon;
    icon.addFile("://images/718.bmp");
    foreach(const QString &str,CityZones.keys()) //遍历map的keys key字符串
    {
        ui->comboxCityZone->addItem(icon,CityZones.value(str),str); //最后一个变量为用户自定义数据，这里存储区位编码
    }
}


void ComBoxExample::on_comboxCityZone_currentIndexChanged(int index)
{
    Q_UNUSED(index);
    QString cityName = ui->comboxCityZone->currentText();
    QString zone =ui->comboxCityZone->currentData().toString(); // 用户自定义数据 类型为QVariant，需要转为QString
    ui->plainTextEdit->appendPlainText(QString("城市名%1 区号：%2").arg(cityName).arg(zone));
}




void ComBoxExample::on_btnClearText_clicked()
{
    ui->plainTextEdit->clear();
}