VS + QT create an OpenCV application

1. Select: File -> New -> Project -> Search "QT" -> Qt GUI Application, enter the name of the project, the next step ... be new.

Select the dependent modules: the most basic QtCore, QtGui, QtWidgets some audio / video, network, database, XML, OpenGl related modules, you can check directly to use.

Select QtGuiApplication2.ui -> Open With -> Qt Designer -> OK

Pull a OPenGL control onto a form

Change control to select the name for the upgrade to mat-> Right ...

Enhance the class name: MatView -> Click Add -> upgrade -> ctrl + F to save interface, as shown below

Header Files right -> type guide -> Add Class -> class life: MatView -> complete -> to confirm, as shown below

MatView.h Code

Once #pragma 
// importing the library 
#include <QOpenGLWidget> 
// inherited QOpenGLWidget 
class MatView: public QOpenGLWidget 
	{ 
	the Q_OBJECT 
    public: 
// Constructor 
    MatView (the QWidget * P); 
   ~ MatView (); 
  // overload a function 
   void the paintEvent (QPaintEvent * E); 
};

　　MatView.cpp Code

#include "QtGuiApplication2.h"
#include <QtWidgets/QApplication>

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	QtGuiApplication2 w;
	w.show();
	return a.exec();
}

main.cpp Code

#include "MatView.h" 
#include <opencv2 / core.hpp> 
#include <opencv2 / imgproc.hpp> 
#include <opencv2 / imgcodecs.hpp> 
#include <the QImage> 
#include <QPainter> 
the using namespace CV; 
// override a function, as long as he will call window changes, the business logic can not handle this function, the image processing only 
void MatView the paintEvent :: (QPaintEvent * E) { 
	Mat imread the src = ( "E: \\ \\ VS2015Opencv vs2015 \ \ Project \\ \\ 12.jpg Picture "); 
    QImage img (src.data, src.cols, src.rows, QImage :: Format_RGB888); 
    QPainter Painter; 
	painter.begin (the this); 
	painter.drawImage (QPoint ( 0, 0), IMG); 
	} 
// constructor is called the parent class, as well as the parent process in which, so to call it 
    MatView :: MatView (the QWidget * P): QOpenGLWidget (P) 
  {  
	}
	MatView ::~MatView(){
	}

　　Add opencv library

VS + QT create an OpenCV application

Guess you like