Height of Vertical Scrollbar

[Mando]

Hi.
I'm developing my own grid. I want to it looks like first image (look2) instead second image (look1).


I thought several ways to achive this.

1. Make 2 controls. Header and grid(only lines).
2. Adjust the clienta area of grid and paint header in nonclient area.
3. Insert a scrollbar as a cotrol inside the grid an adjust its height and position.

but, Is there a way to establish the position and height of the scroll bar via messages?

I'm working only in windows and i don't need a crossplarform solution.


Regards