如何将QPushButton插入TableView?

发布于 2024-08-31 14:59:59 字数 152 浏览 4 评论 0原文

我正在实现 QAbstractTableModel,我想在每行的最后一列插入一个 QPushButton。当用户单击此按钮时,将显示一个新窗口,其中包含有关此行​​的更多信息。

您知道如何插入按钮吗?我了解委托系统,但所有示例都只是关于“如何使用组合框编辑颜色”......

I am implementing QAbstractTableModel and I would like to insert a QPushButton in the last column of each row. When users click on this button, a new window is shown with more information about this row.

Do you have any idea how to insert the button? I know about delegating system but all examples are only about "how to edit color with the combo box"...

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最好是你 2024-09-07 14:59:59

您可以使用

QPushButton* viewButton = new QPushButton("View");    
tableView->setIndexWidget(model->index(counter,2), viewButton);

You can use

QPushButton* viewButton = new QPushButton("View");    
tableView->setIndexWidget(model->index(counter,2), viewButton);
栖竹 2024-09-07 14:59:59

模型视图架构并不是为了将小部件插入到不同的单元格中,但您可以在单元格内绘制按钮。

区别在于:

  1. 它只是一个按钮的绘图
  2. 没有额外的工作(可能需要相当多的额外工作),鼠标悬停时按钮不会突出显示
  3. 由于上面的#1,您不能使用信号和

槽说,这是如何做到这一点:

子类 QAbstractItemDelegate (或 QStyledItemDelegate)并实现 paint() 方法。要绘制按钮控件(或任何其他与此相关的控件),您需要使用样式或 QStylePainter::drawControl() 方法:

class PushButtonDelegate : public QAbstractItemDelegate
{
    // TODO: handle public, private, etc.
    QAbstractItemView *view;

    public PushButtonDelegate(QAbstractItemView* view)
    {
        this->view = view;
    }

    void PushButtonDelegate::paint(
        QPainter* painter,
        const QStyleOptionViewItem & option,
        const QModelIndex & index
        ) const 
    {
        // assuming this delegate is only registered for the correct column/row
        QStylePainter stylePainter(view);
        // OR: stylePainter(painter->device)

        stylePainter->drawControl(QStyle::CE_PushButton, option);
        // OR: view->style()->drawControl(QStyle::CE_PushButton, option, painter, view);
        // OR: QApplication::style()->drawControl(/* params as above */);
    }
}

由于委托将您保持在模型视图领域内,因此请使用有关选择和编辑的视图信号来弹出信息窗口。

The model-view architecture isn't made to insert widgets into different cells, but you can draw the push button within the cell.

The differences are:

  1. It will only be a drawing of a pushbutton
  2. Without extra work (perhaps quite a bit of extra work) the button won't be highlighted on mouseover
  3. In consequence of #1 above, you can't use signals and slots

That said, here's how to do it:

Subclass QAbstractItemDelegate (or QStyledItemDelegate) and implement the paint() method. To draw the pushbutton control (or any other control for that matter) you'll need to use a style or the QStylePainter::drawControl() method:

class PushButtonDelegate : public QAbstractItemDelegate
{
    // TODO: handle public, private, etc.
    QAbstractItemView *view;

    public PushButtonDelegate(QAbstractItemView* view)
    {
        this->view = view;
    }

    void PushButtonDelegate::paint(
        QPainter* painter,
        const QStyleOptionViewItem & option,
        const QModelIndex & index
        ) const 
    {
        // assuming this delegate is only registered for the correct column/row
        QStylePainter stylePainter(view);
        // OR: stylePainter(painter->device)

        stylePainter->drawControl(QStyle::CE_PushButton, option);
        // OR: view->style()->drawControl(QStyle::CE_PushButton, option, painter, view);
        // OR: QApplication::style()->drawControl(/* params as above */);
    }
}

Since the delegate keeps you within the model-view realm, use the views signals about selection and edits to popup your information window.

行至春深 2024-09-07 14:59:59

您可以使用setCellWidget(row,column,QWidget*)在特定单元格中设置小部件。

You can use setCellWidget(row,column,QWidget*) to set a widget in a specific cell.

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