VS2012 opencv Qt5 图像显示程序

#include "planprotect.h" #include <tchar.h> PlanProtect::PlanProtect(QWidget *parent, Qt::WindowFlags flags) : QMainWindow(parent, flags) { ui.setupUi(this); } PlanProtect::~PlanProtect() { } void PlanProtect::on_OpenImage_clicked() { QString filename = _T("C:\\lena.jpg"); if(filename.isEmpty()) { return; } else { QImage* img=new QImage; QImage* imgScaled=new QImage; if(! ( img->load(filename) ) ) //加载图像 { QMessageBox::information(this, tr(_T("打开图像失败")), tr(_T("打开图像失败!"))); delete img;//内存释放 return; } *imgScaled = img->scaled(ui.label_Picture->width(), ui.label_Picture->height()); delete img;//内存释放 ui.label_Picture->setPixmap(QPixmap::fromImage(*imgScaled)); } }