QPixmap headerImg;
std::string str = "";
const char *data = str.data();
int size = static_cast<int>(str.size());
headerImg.loadFromData(reinterpret_cast<const uchar*>(data),size);
this->imageItemLabel->setPixmap(headerImg);
QPixmap headerImg;
std::string str = "";
const char *data = str.data();
int size = static_cast<int>(str.size());
headerImg.loadFromData(reinterpret_cast<const uchar*>(data),size);
this->imageItemLabel->setPixmap(headerImg);