How to clear the items of comboBox

[hisong1988]

Hi,everyone.
Now I have two comboBox:box1,and box2.I want the box2 being changed when the box1 is changing.

The code below;
@void MainWindow::on_proComboBox_currentIndexChanged(int index)
{
QTextCodec::setCodecForCStrings(QTextCodec::codecForName("GB2312"));
QString GuangdongPro[5]={"广州","揭阳","深圳","佛山","汕头"};
QString ZhejiangPro[3]={"杭州","宁波","温州"};
QString HunanPro[2]={"长沙","株洲"};

if(index==0)
{
    ui->cityComboBox->clear();
    for(int i=0;i<5;i++)
        ui->cityComboBox->setItemText(i,GuangdongPro[i]);
}

.....
.....
@

But I found that while I had changed the box1,the old items of the box2 was cleared,and the new items wasn't appeared yet.

anyone have good idea?

[t3chNo]

You have to use addItem function instead of setItemText. There is no item to set its text after clear function.

[hisong1988]

Oh,t3chNo,you're right. I was confused at that time.

Many thanks.