What is windows handler ID and internal ID for each of the windows controls?

Hi,

I have one element that is unable to detect via the selector and it can only use click image activity.

Thus I went to research about the reliability of the activity.

From the research, they said that the windows handler ID and internal ID for each of the windows controls is more reliable than the image.

Therefore, I wanted to try about it. However, I don’t understand what is it.