Qt 显示图片

川长思鸟来 2024-04-19 14:25 146阅读 0赞
  1. QImage qImag("img.jpg");
  2. //qImag = qImag.scaled(width, height); //缩放图片
  3. qImag = qImag.scaled(ui.label_img->size());
  4. ui.label_img->setPixmap(QPixmap::fromImage(qImag));
  5. QFile file("img.jpg");
  6. file.open(QIODevice::ReadOnly);
  7. QByteArray t = file.readAll();
  8. QImage qImag;
  9. qImag.loadFromData(t, "jpg");
  10. qImag = qImag.scaled(ui.label_img->size());
  11. ui.label_img->setPixmap(QPixmap::fromImage(qImag));
  12. file.close();

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