From img32.pas from Image32 library. From GitHub - AngusJohnson/Image32: A comprehensive 2D graphics library written in Delphi Pascal
unction RGBColor(color: TColor32): Cardinal;
var
c : TARGB absolute color;
res: TARGB absolute Result;
begin
res.R := c.B; res.G := c.G; res.B := c.R; res.A := 0;
end;
Could not handle the absolute Result
Tommi Prami