不知道是不是c++标准改变了
以前不是前置申明 只能用指针和引用么？
下面这么写在vs2015一点问题没有
#include <QtWidgets/QMainWindow>
#include "ui_qtopencv2.h"
class QString;
class QImage;
class QPixmap;
namespace cv
{
class Mat;
}
class qtopencv2 : public QMainWindow
{
Q_OBJECT
public:
qtopencv2(QWidget *parent = 0);
~qtopencv2();
private slots:
void openimage();
void saveimage();
void convertrd();
private:
Ui::qtopencv2Class ui;
QString openfile;
QString savefile;
QImage doimage;
QImage doneimage;
QPixmap dopix;
QPixmap donepix;
cv::Mat *cvpix;
void showresult();
};
