QTableWidget, QItemDelegate, QPushButton, QSignalMapper 删除处理

QTableWidget, QItemDelegate, QPushButton, QSignalMapper 删除处理

问题：QTableWidget，最后一列为删除按钮，点击时删除当前行。

1  设置自定义的唯一标记

        QTableWidgetItem  * item6  =   new  QTableWidgetItem();
        item6 -> setData(Qt::UserRole  +   2 , yieldCurveList.at(i) -> getCode());

2  在代理构造中设置QSignalMapper信号信号

    signalMapper  =   new  QSignalMapper( this );
    connect(signalMapper, SIGNAL(mapped(QString)),  this , SIGNAL(editorRowSignal(QString)));

在代理的createEidtor中设置按钮和信号

    QPushButton  * editor  =   new  QPushButton(tr( " 删除 " ), parent);
    connect(editor, SIGNAL(clicked()), signalMapper, SLOT(map()));
    signalMapper -> setMapping(editor, index.data(Qt::UserRole  +   2 ).toString());
     return  editor;

3  删除处理

     for  ( int  i  =   0 ; i  <  ui -> tbwCurveList -> rowCount(); i ++ )
     {
        if (ui->tbwCurveList->item(i, HDelete)->data(Qt::UserRole + 2) == row)
            ui->tbwCurveList->removeRow(i);
    }

4  待优化：将其设置为model，通过index在model中删除，submitAll。



其他相关资料
http://digikam.sourcearchive.com/lines/2:0.10.0-2ubuntu1/setupcollectionview_8cpp-source.html

http://www.qtforum.org/article/24195/qpushbutton-as-delegate-in-a-qtableview.html

http://kunalmaemo.blogspot.com/2010/12/creating-custom-qitemdelegate-with.html