procedure TFrmMain.imageenMouseWheelDown(Sender: TObject;
Shift: TShiftState; MousePos: TPoint; var Handled: Boolean);
begin
SendMessage((Sender as TImageEnMView).Handle,WM_VSCROLL,SB_LINEDOWN,0);
end;
procedure TFrmMain.imageenMouseWheelUp(Sender: TObject; Shift: TShiftState;
MousePos: TPoint; var Handled: Boolean);
begin
SendMessage((Sender as TImageEnMView).Handle,WM_VSCROLL,SB_LINEUP,0);
end;