QTableWidget:只允许数字 [英] QTableWidget: Only numbers permitted

问题描述

有什么办法可以禁止 QTableWidget 中除数字 (0-9) 以外的任何字符?对于 QLineEdits，我使用的是 RegEx 验证器，但这不适用于 QTableWidgets.我想将 QLineEdits 作为 CellWidgets 插入表中，但后来我不得不在我的代码中重写大量函数.那么，有没有其他(直接)方法可以做到这一点?

Is there any way to disallow any characters except numbers (0-9) in a QTableWidget? For QLineEdits I'm using a RegEx validator, but this is not available for QTableWidgets. I thought of inserting QLineEdits in as CellWidgets into the table, but then I had to rewrite an extreme large amount of functions in my code. So, is there any other (direct) way to do so?

推荐答案

我建议为您的表格小部件使用项目委托来处理可能的用户输入.下面是一个简化的解决方案.

I would suggest using an item delegate for your table widget to handle the possible user input. Below is a simplified solution.

item委托的实现:

class Delegate : public QItemDelegate
{
public:
    QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem & option,
                      const QModelIndex & index) const
    {
        QLineEdit *lineEdit = new QLineEdit(parent);
        // Set validator
        QIntValidator *validator = new QIntValidator(0, 9, lineEdit);
        lineEdit->setValidator(validator);
        return lineEdit;
    }
};

使用自定义项目委托实现简单表格小部件:

Implementation of the simple table widget with the custom item delegate:

QTableWidget tw;
tw.setItemDelegate(new Delegate);
// Add table cells...
tw.show();

这篇关于QTableWidget:只允许数字的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！