add custom widget to QTableWidget cell

Question

I have custom widget made with qt designer and i want to add it to QTableWidget cell. But it doesn't work.

Here is the code :

int nRows =10;
for(int row = 0; row < nRows;row++;)

{
    QTableWidgetItem* item = new QTableWidgetItem();
    CustomWdg* wdg=new CustomWdg( );

    mTableWdg->insertRow( row );
    mTableWdg->setItem(row, 0, item);
    mTableWdg->setCellWidget( row, 0, wdg );

}  

Answer 1

If you want to add custom widget into table cell you can use QItemDelegate.

Create your own Delegate class and inherit it from QItemDelegate.

class MyDelegate : public QItemDelegate
{
    public:
    CChoicePathDelegate (QObject *parent = 0);
    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const; //delegate editor (your custom widget)
    void setEditorData(QWidget *editor, const QModelIndex &index) const;
    void setModelData(QWidget *editor, QAbstractItemModel *model,
    const QModelIndex &index) const; //transfer editor data to model
    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option,
    const QModelIndex &index) const;
};

And then set delegate for Table with this methods on your own.

setItemDelegate(QAbstractItemDelegate *)
setItemDelegateForColumn(int, QAbstractItemDelegate *)
setItemDelegateForRow(int, QAbstractItemDelegate *)

---

I have tried this code:

#include "widget.h"
#include "ui_widget.h"
#include <QPushButton>
#include <QLabel>
#include <QHBoxLayout>

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    QHBoxLayout *l = new QHBoxLayout();
    l->addWidget((new QPushButton("I`m in cell")));
    l->addWidget((new QLabel("Test label")));

    QWidget *w = new QWidget();

    w->setLayout(l);

    ui->tableWidget->setCellWidget(1,1, w);
}

Widget::~Widget()
{
    delete ui;
}

and result is: