BottomRight des sichtbaren Bereichs einer ScrollBox?

[Blup]

Versuch mal so:

Delphi-Quellcode:

RangeRect := ScrollBox.ClientRect;
dx := ScrollBox.HorzScrollBar.Position - RangeRect.Left;
dy := ScrollBox.VertScrollBar.Position - RangeRect.Top;
Inc(RangeRect.Left,   dx);
Inc(RangeRect.Right,  dx);
Inc(RangeRect.Top,    dy);
Inc(RangeRect.Bottom, dy);