OpenCV and Qt 5.3 weird message - c++

Question

I'm trying to run (in Qt, C++) the following code that uses OpenCV:
.pro file:
QT += core
QT -= gui
TARGET = testOpenCV2
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
INCLUDEPATH += C:\opencv\build\include
LIBS += C:\opencv\release\bin\libopencv_core300.dll
LIBS += C:\opencv\release\bin\libopencv_highgui300.dll
LIBS += C:\opencv\release\bin\libopencv_imgcodecs300.dll
LIBS += C:\opencv\release\bin\libopencv_imgproc300.dll
main.cpp file:
#include <opencv2/opencv.hpp>
#include <opencv2/highgui/highgui.hpp>
using namespace cv;
int main(int argc, char *argv[])
{
cv::Mat image = cv::imread("pic.jpg", CV_LOAD_IMAGE_COLOR);
cv::namedWindow("My Image", WINDOW_AUTOSIZE);
cv::imshow("My Image", image);
cv::waitKey(0);
return 0;
}
But I'm getting the following message:
exited with code -1073741515
And sometimes I get the following message:
Cannot obtain a handle to the inferior: The parameter is incorrect.
and nothing is happening.
Can anyone help me please?
I'm new in Qt and I don't know what's going on.

Answer 1

You are not using Qt at all (except you try link QtCore). For running a QtApplication you would at least need to call QCoreApplication.
#include <QCoreApplication>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
// Some code here
// QMainWindow w;
// w.show();
return a.exec();
}
Creating a non Qt application you would change your pro-file to (omit the QT at all):
TEMPLATE = app
CONFIG += console c++11
CONFIG -= app_bundle
CONFIG -= qt
SOURCES += main.cpp
INCLUDEPATH += C:\opencv\build\include
LIBS += C:\opencv\release\bin\libopencv_core300.dll
LIBS += C:\opencv\release\bin\libopencv_highgui300.dll
LIBS += C:\opencv\release\bin\libopencv_imgcodecs300.dll
LIBS += C:\opencv\release\bin\libopencv_imgproc300.dll
This way you also won't need ''QCoreApplication''