QTableWidget - Copy & Paste failed

[rivci]

Firstly, I am sorry for my poor english

Here I subclass QTableWidget and name it TabelJo. Next, I implement 2 functions, copy and paste. You can see the codes below.

void TabelJo::copy(){
    QTableWidgetSelectionRange range = selectedRange();
    QString str;
    for (int i = 0; i < range.rowCount(); ++i) {
        if (i > 0)
            str += "\n";
        for (int j = 0; j < range.columnCount(); ++j) {
            if (j > 0)
                str += "\t";
            str += getText( range.topRow() + i, range.leftColumn() + j);
        }
    }
    str += "\n";
    QApplication::clipboard()->setText(str);
    qDebug() << QApplication::clipboard()->text();
}
 
void TabelJo::paste(){
    QString str = QApplication::clipboard()->text();
    qDebug() << QApplication::clipboard()->text();
    QStringList rows = str.split('\n');
    int numRows = rows.count()-1;
    int numColumns = rows.first().count('\t') + 1;
 
    qDebug() << numRows << " " << numColumns ;
    for (int i = 0; i < numRows; ++i) {
        QStringList columns = rows[i].split('\t');
        for (int j = 0; j < numColumns; ++j) {
                setText(currentRow()+i,currentColumn()+j,columns[j],Qt::AlignLeft | Qt::AlignVCenter);
        }
    }
}

void TabelJo::copy(){
    QTableWidgetSelectionRange range = selectedRange();
    QString str;
    for (int i = 0; i < range.rowCount(); ++i) {
        if (i > 0)
            str += "\n";
        for (int j = 0; j < range.columnCount(); ++j) {
            if (j > 0)
                str += "\t";
            str += getText( range.topRow() + i, range.leftColumn() + j);
        }
    }
    str += "\n";
    QApplication::clipboard()->setText(str);
    qDebug() << QApplication::clipboard()->text();
}

void TabelJo::paste(){
    QString str = QApplication::clipboard()->text();
    qDebug() << QApplication::clipboard()->text();
    QStringList rows = str.split('\n');
    int numRows = rows.count()-1;
    int numColumns = rows.first().count('\t') + 1;

    qDebug() << numRows << " " << numColumns ;
    for (int i = 0; i < numRows; ++i) {
        QStringList columns = rows[i].split('\t');
        for (int j = 0; j < numColumns; ++j) {
                setText(currentRow()+i,currentColumn()+j,columns[j],Qt::AlignLeft | Qt::AlignVCenter);
        }
    }
}

To copy to clipboard, switch view to plain text mode 

Consider I select these items on my table:
| a | a1 | a2 |
| b | b2 | b3 |
then I copy them.

The code on line 14 execute successfully.
Line 15 give this result:
"a a1 a2
b b2 b3
"
maybe this form will have a better look "a\ta1\ta2\nb\tb2\b3\n"

The problem is when I try to paste them, the code on line 20 only give this result:
"b3"

I use win7 and Qt 4.7.0 (32 bit)

Could anyone help me to solve this problem? I'm really stack here.

[rivci]

I just realize that QTableWidget has its default copy function (Ctrl+C). The next question is, how to overwrite this function?

---

Added after 1:

my bad

void TabelJo::keyPressEvent(QKeyEvent *event){
    if( event==QKeySequence::Delete )
        del();
    else if( event->matches( QKeySequence::Copy ) )
        copy();
    else if( event->matches( QKeySequence::Paste ) )
        paste();
    QTableWidget::keyPressEvent(event);
}

void TabelJo::keyPressEvent(QKeyEvent *event){
    if( event==QKeySequence::Delete )
        del();
    else if( event->matches( QKeySequence::Copy ) )
        copy();
    else if( event->matches( QKeySequence::Paste ) )
        paste();
    QTableWidget::keyPressEvent(event);
}

To copy to clipboard, switch view to plain text mode 

I forget to place "else" at the last "if"
the code should be like this

void TabelJo::keyPressEvent(QKeyEvent *event){
    if( event==QKeySequence::Delete )
        del();
    else if( event->matches( QKeySequence::Copy ) )
        copy();
    else if( event->matches( QKeySequence::Paste ) )
        paste();
    else
        QTableWidget::keyPressEvent(event);
}

void TabelJo::keyPressEvent(QKeyEvent *event){
    if( event==QKeySequence::Delete )
        del();
    else if( event->matches( QKeySequence::Copy ) )
        copy();
    else if( event->matches( QKeySequence::Paste ) )
        paste();
    else
        QTableWidget::keyPressEvent(event);
}

To copy to clipboard, switch view to plain text mode