C++ (Cpp) QFormLayout::getItemPosition示例

void tst_QFormLayout::getPosition()
{
    QWidget *w = new QWidget;
    QFormLayout *fl = new QFormLayout(w);

    QList<QLabel*> labels;
    QList<QLineEdit*> fields;
    for (int i = 0; i < 5; ++i) {
        labels.append(new QLabel(QString("Label %1").arg(i+1)));
        fields.append(new QLineEdit);
        fl->addRow(labels[i], fields[i]);
    }

    //a field
    {
        int row;
        QFormLayout::ItemRole role;
        fl->getWidgetPosition(fields[3], &row, &role);
        QCOMPARE(row, 3);
        QCOMPARE(role, QFormLayout::FieldRole);
        int old_row = row;
        QFormLayout::ItemRole old_role = role;
        fl->getItemPosition(3*2 + 1, &row, &role);
        QCOMPARE(row, old_row);
        QCOMPARE(role, old_role);
    }

    //a label
    {
        int row;
        QFormLayout::ItemRole role;
        fl->getWidgetPosition(labels[2], &row, &role);
        QCOMPARE(row, 2);
        QCOMPARE(role, QFormLayout::LabelRole);
        int old_row = row;
        QFormLayout::ItemRole old_role = role;
        fl->getItemPosition(2*2, &row, &role);
        QCOMPARE(row, old_row);
        QCOMPARE(role, old_role);
    }

    //a layout that's been inserted
    {
        QVBoxLayout *vbl = new QVBoxLayout;
        fl->insertRow(2, "Label 1.5", vbl);
        int row;
        QFormLayout::ItemRole role;
        fl->getLayoutPosition(vbl, &row, &role);
        QCOMPARE(row, 2);
        QCOMPARE(role, QFormLayout::FieldRole);
        int old_row = row;
        QFormLayout::ItemRole old_role = role;
        fl->getItemPosition(labels.count()*2 + 1, &row, &role);
        QCOMPARE(row, old_row);
        QCOMPARE(role, old_role);
    }

    delete w;
}

示例#2

显示文件

文件： wrap_qformlayout.cpp 项目： khumba/qtah

QFormLayout::ItemRole getItemRole(const QFormLayout& layout, int index) {
    int row;
    QFormLayout::ItemRole role;
    layout.getItemPosition(index, &row, &role);
    return role;
}