How can I map mouse cursor regions from window?

[Guest]

Hello,

 

I am looking for a way to map cursor regions for a given window without using the mouse cursor.

For example, given the following window:

 

Regions marked in blue have the

Regions marked in green have

Regions marked in red have

 

Is there any WinAPI function that can return a cursor-map of these? 

I was thinking about moving the actual mouse cursor over each pixel of the window but that is not an option because the window is outside any screen boundaries (long story) while I need to do this.

I would really appreciate the help!

[Guest]

Does not matter.

I was able to think about creative implementation of my needs without this requirement

Thank you anyway