add custom widget to QTableWidget cell

qt, qtablewidget, qtablewidgetitem

Solution

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:

Problem

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 ); } ```

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