Qt - Cannot put an image in a table

Question

Why with the following code I just get an empty table widget?

QString imgPath = \"C:\\\\path\\\\to\\\\image.jpg\";
QImage *img = new QImage(imgPath);

QTable         


        

Answer 1

You can try the following - here we use images from the resource folder...

QString imgPath = ":/image.png";
QImage imageName = *new QImage(imgPath);

QTableWidgetItem *thumbnail = new QTableWidgetItem;
thumbnail->setData(Qt::DecorationRole, QPixmap::fromImage(imageName));

and then - set the thumbnail to the table row/col you want to have - for example in col 1 and row 1:

tableWidget->setItem( 1, 1, thumbnail);

you have to note that you need the specific header file:

#include <QPixmap>

Answer 2

OK, I had to rescale the image:

thumbnail->setData(Qt::DecorationRole, QPixmap::fromImage(*img).scaled(100, 100));

Answer 3

You are doing all almost right, but try to control your img, for example, like this:

QString imgPath = "C:\\path\\to\\image.jpg";
QImage *img = new QImage();
bool loaded = img->load(imgPath);
if (loaded)
{

    QTableWidget     *thumbnailsWidget = new QTableWidget;
    QTableWidgetItem *thumbnail = new QTableWidgetItem;
    thumbnail->setData(Qt::DecorationRole, QPixmap::fromImage(*img));

    thumbnailsWidget->setColumnCount(5);
    thumbnailsWidget->setRowCount(3);
    thumbnailsWidget->setItem(0, 0, thumbnail);

    w.setCentralWidget(thumbnailsWidget);
} else {
    qDebug()<<"Image "<<imgPath<<" was not opened!";
}

Hope, it helps you! Good luck!