在 Qt 设计器中叠加小部件 [英] Superimpose widgets in Qt designer

问题描述

我有一个 Qt 应用程序，我想使用布局在 QTreeWidget 上叠加一个按钮.事实上，当我点击一个项目时，我希望按钮设置为可见，并在树的上方居中.按钮必须保持在前台，直到我点击.可能吗?

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 ?

推荐答案

你可以使用 QStackedLayout 并将其更改为 堆叠模式QStackedLayout::StackAll，当您需要显示两个小部件时.方法应该是这样的:

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);
}

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