Sorry, my English is too poor ops: .

I want get value of transparent color (or one value color that be use as transparent color). Do you understand me, please?

I am trying like
[pascal]color:TDDColorKey;
..
TDirectDrawSurface.IDDSurface.GetColorKey(DDCKEY_S RCBLT,color);[/pascal]

but it returned strange color. I thing that is wrong parameter, no know.