Hallo himitsu, ich habe inzwischen die Lösung gefunden:
Delphi-Quellcode:
procedure TForm1.btn1Click(Sender: TObject);
var
DIB: PBitmapInfoHeader;
begin
if Clipboard.HasFormat(CF_DIB) then
begin
DIB := Pointer(Clipboard.GetAsHandle(CF_DIB));
if (DIB <> nil) then
Form1.Caption := IntToStr(DIB^.biBitCount);
end;
end;