QListWidget的editItem()输出“编辑:编辑失败”

时间:2019-09-28 18:58:10

标签: c++ qt qt5 qlistwidget qlistwidgetitem

我试图将一个项目添加到QListWidget,选择该项目,然后开始编辑新项目。

该项目被添加并被选中,但是该行未带入QLineEdit或它将尝试使用的任何内容。

这是我的小部件的代码,其相关代码在“ m_addButton”的连接下:

Sequencer::Sequencer(QWidget* parent) :
    QWidget(parent)
{
    m_list = new QListWidget();
    m_addButton = new QPushButton("Add Step");
    m_removeButton = new QPushButton("Remove Step");

    connect(m_addButton, &QPushButton::clicked, this, [&]()
    {
        m_list->addItem(""); // This part works,
        m_list->setCurrentItem(m_list->item(m_list->count() - 1)); // This part works...
        m_list->editItem(m_list->currentItem()); // This part puts out "edit: editing failed" into the console.
    });

    connect(m_removeButton, &QPushButton::clicked, this, [&]()
    {
        if (!m_list->selectedItems().isEmpty())
        {
            qDeleteAll(m_list->selectedItems());
        }
    });

    QHBoxLayout* hLayout = new QHBoxLayout();
    hLayout->addStretch();
    hLayout->addWidget(m_addButton);
    hLayout->addWidget(m_removeButton);

    QVBoxLayout* vLayout = new QVBoxLayout();
    vLayout->addWidget(m_list);
    vLayout->addLayout(hLayout);

    setLayout(vLayout);
}

1 个答案:

答案 0 :(得分:1)

默认情况下,QListWidgetItem是不可编辑的,因此,如果要对其进行编辑,则必须启用Qt::ItemIsEditable标志:

connect(m_addButton, &QPushButton::clicked, this, [&]()
{
    QListWidgetItem *item = new QListWidgetItem;
    item->setFlags(item->flags() | Qt::ItemIsEditable); # enable
    m_list->addItem(item);
    m_list->setCurrentItem(item);
    m_list->editItem(item);
});