为什么用下面的代码我只是得到一个空表窗口小部件?
QString imgPath = "C:\\path\\to\\image.jpg";
QImage *img = new QImage(imgPath);
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);
setCentralWidget(thumbnailsWidget);
我怎样才能把图像变成QTableWidgetItem?
谢谢。
PS:
我注意到,该表是不是真的空。 点击不同的QTableWidgetItem元素时,空的变成蓝色,在一个坐标[0,0]中的高亮方法不同:青与左边薄蓝条...
你正在做的一切差不多吧,但要尽量控制自己的img
,例如,像这样的:
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!";
}
希望,它可以帮助你! 祝好运!
OK,我不得不重新调整图像:
thumbnail->setData(Qt::DecorationRole, QPixmap::fromImage(*img).scaled(100, 100));