QT 图像QPixmap处理入门最好的例子

#include "pixmap.h" void MyPixmap::paintEvent( QPaintEvent * ) { paint = new QPainter; // pixmap.load("./m_vedio.png"); pixmap.load("./002.png"); paint->begin( this ); paint->drawPixmap(0,0,pixmap); paint->translate(80,80);//gai bian yuan dian paint->scale(2,2);//2 times bigger than before paint->drawPixmap(0,0,pixmap); paint->translate(100,0); paint->rotate(-30); paint->scale(0.5,0.5); paint->drawPixmap(0,0,pixmap); paint->end(); } MyPixmap::MyPixmap() { setGeometry(100,100,400,400); }