qt5 get image data from RAM and show

 

use QImage::fromData

 1 void XXX::paintEvent(QPaintEvent*)
 2 {
 3     //...    
 4     
 5     QImage image = QImage::fromData(ptr,size);
 6     QPainter painter(this);
 7     QRect rcPhoto = ui->frame->frameRect();
 8     rcPhoto.translate(ui->frame->pos());
 9     painter.drawImage(rcPhoto,image);
10 }

 

posted @ 2021-01-02 00:42  蓝慕凡  阅读(114)  评论(0)    收藏  举报