如何在QTreeWidget中找到所选项目？ [英] How can I find the selected item in a QTreeWidget?

问题描述

我有一个继承QTreeWidget的类。如何找到当前选定的行？
通常我以这种方式连接信号到插槽：

I have a class that inherits QTreeWidget. How can I find the currently selected row? Usually I connect signals to slots this way:

connect(myButton, SIGNAL(triggered(bool)), this, SLOT(myClick()));

但是，我找不到类似 QTreeWidget-> QTreeWidgetItem 。
我发现的唯一方法是重新定义的QTreeWidget类的mousePressEvent像这样：

However, I can't find anything similar for QTreeWidget->QTreeWidgetItem. The only way I found is to redefine the mousePressEvent of the QTreeWidget class like this:

void MyQTreeWidget::mousePressEvent(QMouseEvent *e){
    QTreeView::mousePressEvent(e);
    const QModelIndex index = indexAt(e->pos());
    if (!index.isValid())
    {
    const Qt::KeyboardModifiers modifiers = QApplication::keyboardModifiers();
    if (!(modifiers & Qt::ShiftModifier) && !(modifiers & Qt::ControlModifier))
    clearSelection();
    }
 }

我没有尝试。

推荐答案

使用itemClicked（）信号会错过任何使用键盘。我假设这是一件坏事在你的情况下。

Using the itemClicked() signal will miss any selection changes made using the keyboard. I'm assuming that's a bad thing in your case.

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