How To Get Mouse Click Coordinates Of An Image Inside A Picture Box(Not Picture Box Mouse Click Coordinates But Image Pixel Coordinates)

Question

I have been trying to place a marker at the mouse location on an image when the user clicks on the image box, the problem is that the marker has a certain offset which is exponential, and I think it's because the image size is not equal to the image box size. I also want to place the marker after zooming in on the image.

This is a windows forms project and it uses emgucv, OpenCV, and c++/cli.

Note I place the marker using an OpenCV function by passing the mouse click coordinates.

Can anyone please help?.

[This post](https://stackoverflow.com/a/38977660/3110834) may help. It handles click event on picture box, then convert the location to a point on the image. — Reza Aghaei, Mar 01 '21 at 19:48

score 0 · Answer 1 · answered Mar 08 '21 at 14:53

I found the solution in this article https://www.codeproject.com/Articles/20923/Mouse-Position-over-Image-in-a-PictureBox you need to translate the PictureBox coordinates to image coordinates however, it depends on the size mode of the PictureBox.

How To Get Mouse Click Coordinates Of An Image Inside A Picture Box(Not Picture Box Mouse Click Coordinates But Image Pixel Coordinates)

1 Answers1