c++ - 以巧妙的方式禁用 QCheckbox

Question

我想让一个名为“Show Captions”的 QCheckBox 在选中第一个复选框时禁用另一个名为“Show captions if no title”的 QCheckBox，但我的问题是如何在用户选中第一个复选框时立即禁用它.

SetupSlideShow::SetupSlideShow(QWidget* parent)
    : QScrollArea(parent), d(new SetupSlideShowPriv)
{
    QWidget* panel = new QWidget(viewport());
    setWidget(panel);
    setWidgetResizable(true);

    QVBoxLayout* layout = new QVBoxLayout(panel);

    d->showComment = new QCheckBox(i18n("Show captions"), panel);
    d->showComment->setWhatsThis( i18n("Show the image caption at the bottom of the screen."));

    d->showTitle = new QGroupBox(i18n("Show title"), panel);
    d->showTitle->setWhatsThis( i18n("Show the image title at the bottom of the screen."));
    d->showTitle->setCheckable(true);

    d->showCapIfNoTitle = new QCheckBox(i18n("Show captions if no title"), panel);
    d->showCapIfNoTitle->setWhatsThis( i18n("Show the image caption at the bottom of the screen if no titles existed."));
    QVBoxLayout *vbox = new QVBoxLayout;
    vbox->addWidget(d->showCapIfNoTitle);
    d->showTitle->setLayout(vbox);
    layout->addWidget(d->showLabels);
    layout->addWidget(d->showComment);
    layout->addWidget(d->showTitle);
}

Answer 1

这行不通吗？

connect(d->showComment, SIGNAL(toggled(bool)), d->showCapIfNoTitle, SLOT(setDisabled(bool)));