如何在 Qt 中为水平布局添加滚动区域? [英] How to add a Scroll area for a horizontal layout in Qt?

问题描述

如何在 Qt 中为水平布局添加滚动区域?我最近开发的应用程序有一个水平布局.水平布局包含一系列标签小部件，因此我需要将它们放在滚动区域中，以便我们可以相应地滚动它.例如，它就像在滚动区域内列出的购物车站点中的最新产品.如何为此定义滚动区域?下面是我使用的示例代码:

How to add a Scroll area for a horizontal layout in Qt? I have a horizontal layout for my application I have been developing recently. The horizontal layout contains a series of widgets of labels so I need to put them in scroll area so that we can scroll it accordingly. For example it's just like the recent products in cart sites which are listed inside a scroll area. How can I define a scroll area for that? Below is the sample code I use:

// val is a list containing some names
for (int i = 0; i < val.size(); ++i) {
    if (session->getUserName()!=val[i]) {
    {
        QLabel *label4;
        label4=new QLabel();
        label4->width();
        label4->height();
        QPainter painter(this);
        painter.setPen(Qt::blue);
        painter.drawEllipse(0, 0, 20, 20);
        QPixmap icon(QString::fromUtf8(":/new/prefix1/singleuser.png"));

        QImage fixedImage(20, 20, QImage::Format_ARGB32_Premultiplied);
        fixedImage.fill(0);  // Make sure you don't have garbage in there

        QPainter imgPainter(&fixedImage);
        QPainterPath clip;
        clip.addEllipse(0, 0, 20, 20);  // this is the shape we want to clip to
        imgPainter.setClipPath(clip);
        imgPainter.drawPixmap(0, 0, 20, 20, icon);
        imgPainter.end();

        label4->setPixmap(QPixmap::fromImage(fixedImage));
        ui->horizontalLayout->addWidget(label4);
        listforgroup<<label4;
        QLabel *label;
        label=new QLabel(val[i]);

        listforgroup<<label;

        ui->horizontalLayout->addWidget(label);
    }

我需要为 horizo​​ntalLayout 添加滚动区域.如何添加?

I need to add the scroll area for horizontalLayout. How to add it?

推荐答案

您不想为 QHBoxLayout(水平布局)添加 QScrollArea ...你想要的是一个 QScrollArea WITH 一个 QHBoxLayout 像这样:

You don't want to add a QScrollArea for a QHBoxLayout(horizontal layout) ... what you want is a QScrollArea WITH a QHBoxLayout on it like this:

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