QTreeWidget交替行颜色设置

发布于 2024-11-28 10:59:13 字数 285 浏览 1 评论 0原文

我想将颜色设置为我使用的树小部件中的备用行

setAlternatingRowColors(1);
QPalette p = palette();
p.setColor( QPalette::AlternateBase, QColor(226, 237, 253) );
setPalette(p);

但是每次单击后，颜色设置为已设置行下方的行，或者颜色设置在行之间切换。我希望将其设置为特定行的常量。意味着首先如果第二行正在设置颜色，那么单击后颜色设置将转到第三行。我希望它只位于第二行

原文

I want to set color to alternate row in the treewidget I did with

setAlternatingRowColors(1);
QPalette p = palette();
p.setColor( QPalette::AlternateBase, QColor(226, 237, 253) );
setPalette(p);

But here after every single click the color is setting to the row below the already set row or the color setting is toggling between rows. I want it to be set constant to particular row. Means first if 2nd row is setting color then after single click the color set is going to 3rd row. I want it to be in 2nd row only

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空心↖ 2024-12-05 10:59:13

我建议使用模型来执行此操作，并为模型中的背景返回适当的颜色。当 data(const QModelIndex& index, int role) 被称为视图的模型对象（或在您的情况下为 QTreeWidget）时， role 的值之一 将是 Qt::BackgroundRole。像下面这样的东西会做你想要的：

QVariant SomeModel::data(const QModelIndex& index, int role)
{
    switch(role)
    {
    // other role handling code here. below is the except for handling BackgroundRole
    case Qt::BackgroundRole:
        if (0 == index.row() % 2)
            return QColor(226, 237, 253);
        else
            return Qt::white;
    break;
    }
}

I suggest using the model to do this and return the approrpriate color for the background in your model. When data(const QModelIndex& index, int role) is called the model object for the view (or QTreeWidget in your case), one of the values of role will be Qt::BackgroundRole. Something like the following would do what you want:

QVariant SomeModel::data(const QModelIndex& index, int role)
{
    switch(role)
    {
    // other role handling code here. below is the except for handling BackgroundRole
    case Qt::BackgroundRole:
        if (0 == index.row() % 2)
            return QColor(226, 237, 253);
        else
            return Qt::white;
    break;
    }
}

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