Hi, everyone!

I am using bundled with Keil version of emWin. Could somebody promt me how I implement the following behavior?

I display a text on top of a layer (which is going to change) and I need the color text inverted but in a way that

if the background of respective column of pixels where the text is about to be drawn is for instance blue the text will be white and vice versa.

The illustration shows what I mean. I am not sure how to do it with emWin.

Thanks in advance.