Drag an drop between differents QTableWidget...

[webquinty]

Hello,

I have some problems with drag and drop between differents QTableWigdet.
Table A is source information, where I selected and drag the entire row but the last cell.

snapshot1.jpg

Now, I would like to drop this information in Table B. (botton QTableWidget).
I have implemented dragEnterEvent, dragMoveEvent, dropEvent and dragLeaveEvent and it works fine.

#include <QtGui>
#include <QDebug>
#include "LeiTableWidget.h"
 
 LeiTableWidget::LeiTableWidget(QWidget *parent)
     : QTableWidget(parent)
 {
     setAcceptDrops(true);
     setAutoFillBackground(true);
     clear();
 }
 
 void LeiTableWidget::dragEnterEvent(QDragEnterEvent *event)
 {
//	 qDebug() << "dragEnterEvent";
     event->acceptProposedAction();
 }
 
 void LeiTableWidget::dragMoveEvent(QDragMoveEvent *event)
 {
//	 qDebug() << "dragMoveEvent";
     event->acceptProposedAction();
 }
 
 void LeiTableWidget::dropEvent(QDropEvent *event)
 {
	qDebug() << "dropEvent";
 
	QTableWidget* table = qobject_cast<QTableWidget*>(event->source());
 
    QPoint old_coordinates = QPoint(-1,-1);
    if(table->currentItem() != NULL)
    {
    	// Tengo las coordenadas del elemento que se ha arrastrado desde su origen
    	//**************************************************************************
        old_coordinates = QPoint( table->currentItem()->row(), table->currentItem()->column() );
    }
 
	qDebug() << table->currentItem()->row() << "-" << table->currentItem()->column() ;
 
	qDebug() << "mine data " << event->mimeData()->text();
    QTableWidget::dropEvent(event);
	event->acceptProposedAction();
 }
 
 void LeiTableWidget::dragLeaveEvent(QDragLeaveEvent *event)
 {
//	 qDebug() << "dragLeaveEvent";
     event->accept();
 }
 
 void LeiTableWidget::clear()
 {
 
 }

#include <QtGui>
#include <QDebug>
#include "LeiTableWidget.h"

 LeiTableWidget::LeiTableWidget(QWidget *parent)
     : QTableWidget(parent)
 {
     setAcceptDrops(true);
     setAutoFillBackground(true);
     clear();
 }

 void LeiTableWidget::dragEnterEvent(QDragEnterEvent *event)
 {
//	 qDebug() << "dragEnterEvent";
     event->acceptProposedAction();
 }

 void LeiTableWidget::dragMoveEvent(QDragMoveEvent *event)
 {
//	 qDebug() << "dragMoveEvent";
     event->acceptProposedAction();
 }

 void LeiTableWidget::dropEvent(QDropEvent *event)
 {
	qDebug() << "dropEvent";

	QTableWidget* table = qobject_cast<QTableWidget*>(event->source());

    QPoint old_coordinates = QPoint(-1,-1);
    if(table->currentItem() != NULL)
    {
    	// Tengo las coordenadas del elemento que se ha arrastrado desde su origen
    	//**************************************************************************
        old_coordinates = QPoint( table->currentItem()->row(), table->currentItem()->column() );
    }

	qDebug() << table->currentItem()->row() << "-" << table->currentItem()->column() ;

	qDebug() << "mine data " << event->mimeData()->text();
    QTableWidget::dropEvent(event);
	event->acceptProposedAction();
 }

 void LeiTableWidget::dragLeaveEvent(QDragLeaveEvent *event)
 {
//	 qDebug() << "dragLeaveEvent";
     event->accept();
 }

 void LeiTableWidget::clear()
 {

 }

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but now I have some problems:

1.- If a drop in a cell different than column 0, write incorrect data in table.
snapshot2.jpg

2.- How can I detect what information or items has drop action?
3.- How can I detect what row is select to drop?

Best regards.

[Santosh Reddy]

Try implementing dropMimeData instead of dropEvent

See if this works

bool LeiTableWidget::dropMimeData (int row, int column, const QMimeData * data, Qt::DropAction action)
{
    return QTableWidget::dropMimeData (row, 0, data, action);
}

bool LeiTableWidget::dropMimeData (int row, int column, const QMimeData * data, Qt::DropAction action)
{
    return QTableWidget::dropMimeData (row, 0, data, action);
}

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