单击按钮时的QListWidgetItem执行操作

Question

I have a QListWidget with some items. I did this to select an item from QListWidget:

connect(ui->mylist,SIGNAL(itemClicked(QListWidgetItem*)),this,SLOT(onMyListItem(QListWidgetItem*)));

Now in onMyListItem function I did this to check the index of the item:

int index=ui->mylist->currentRow();
    qDebug()<<"index item: "<<index;

How can I do some actions when I select an item and click a showBtn button?

Answer 1

If you are adding a button to your QListWidget , create an slot and connect your button signal to slot. by clicking the button , you can check witch item is selected and you can do what you want

Answer 2

I'll assume the button you're adding is a QAction , then you just need to connect its triggered() signal to a slot you create, say makeAction() :

connect(someAction, SIGNAL(triggered()), this, SLOT(makeAction());

Inside this slot, assuming it has access to the list, you can get the current item in the list and do the appropriate thing:

void makeAction()
{
    auto item = ui->mylist->currentItem();
    if (item)
    {
        // Do something
    }
}