OpenCV Macro CV_BGR2RGBA Not Defined.

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Hello OpenCV experts,

I was using the following function with headers:

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/opencv.hpp>
cv::cvtColor(imageBGR, imageRGBA, CV_BGR2RGBA);

However, when I compile, I got error:

"error: identifier "CV_BGR2RGBA" is undefined" Please let me know how to use this macro correctly. Thank you.