Compiling c++ code gives an error "‘nameWindow’ was not declared in this scope"

Question

I am new in openCV. I have a c++ code like below.

#include <iostream>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>

using namespace std;
using namespace cv;

int main(int argc, const char *argv[])
{
    Mat img(480,640,CV_8UC3,Scalar(255,0,0));
    if(img.empty())
    {
        cout<<"Picture can not load..."<<endl;
        return -1;
    }
    nameWindow("test",CV_WINDOW_AUTOSIZE);
    imshow("test",img);
    waitKey(0);
    destroyWindow("test");
    return 0;
}

I try to compile this code in ubuntu 14.04. But when i do

g++ resimac.cpp

it gives an error:

error: ‘nameWindow’ was not declared in this scope
  nameWindow("test",CV_WINDOW_AUTOSIZE);
                                      ^

What is the problem? How to solve it?

Please stop using namespaces like this... http://stackoverflow.com/questions/1452721/why-is-using-namespace-std-considered-bad-practice — Mailerdaimon, Mar 27 '15 at 15:49

score 0 · Answer 1 · answered Mar 27 '15 at 16:10

0

nameWindow("test",CV_WINDOW_AUTOSIZE);

You are missing the 'd'. The correct format should be namedWindow("test",CV_WINDOW_AUTOSIZE);

http://docs.opencv.org/modules/highgui/doc/user_interface.html#namedwindow

answered Mar 27 '15 at 16:10

Jeff S

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Compiling c++ code gives an error "‘nameWindow’ was not declared in this scope"

1 Answers1