QT + OpenCV error : C1083 opencv2/opencv.hpp no such file or directory

In Qt, setting of "include and lib path" is configured in the .pro file.

For example :

INCLUDEPATH += C:\opencv300rc1\opencv\build\include
LIBS += C:\opencv300rc1\MyBuild\lib\Debug

But in my case, I can not find the reason of error "C1083 opencv.hpp no such file or directory..."

I tried various attempts, but I don't know why error occur.

But I found the way of to avoid the error.

That is using build setting tab (ctrl + 5).

In build environment, add opencv path INCLUDE and LIB.

I solved the problem in this way.

Please note.

build opencv 3.0 + cuda 6.5 + QT 5.4 + tbb

These are cmake configuration for OpenCV rc1 + CUDA 6.5 + QT 5.4 + TBB 4.3

I thought it will help opencv building beginner.

I will help how to set path and what I should check.

And configuration result is here.

Now I am building on VS 2012... I hope to build with no error.. ^^

Refer to this page, these are my result of building opencv in waste of time.

http://study.marearts.com/search/label/Opencv%20Build

QT printf

qDebug ("message %d, says: %s",num,str);

qDebug() << "Debug Message";

qDebug messages are removed if "QT_NO_DEBUG_OUTPUT" is defined, so it will be useful than printf.

And refer to other message out methods.

qWarning() << "Warning Message";
qCritical() << "Critical Error Message";
qFatal() << "Fatal Error Message";

Have a good day!

#include < stdio.h>
#include < QDebug>

int main()
{
    printf("stdio.h\n");
    qDebug() << "QDebug.h";
}