在Qt Designer中叠加小部件

Question

I have a Qt application and I would like to superimpose a button on a QTreeWidget using the layouts. In fact, when I click on an item, I want the button to set visible, and centered above the tree. The button have to stay at the foreground until I click. Is it possible ?

Answer 1

You could use QStackedLayout and change it's stacking mode to QStackedLayout::StackAll , when you need to show both widgets. Methods would be something like this:

void Widget::showButton()
{
    stackedLayout->setStackingMode(QStackedLayout::StackAll);
    stackedLayout->setCurrentWidget(widgetWithButton);
}

void Widget::hideButton()
{
    stackedLayout->setCurrentWidget(treeWidget);
    stackedLayout->setStackingMode(QStackedLayout::StackOne);
}