主题：画线代码编写

 VARIABLE:mark:=0,price:=2700;
cond:year=2018 and MONTH=7 and day=13;
cond2:time=140000;


if  (cond and cond2) then
begin
DRAWSL(1 ,PRICE,0 ,0 ,0 );
PRICE:=PRICE+100;
end  

if (h>price+100 and count(cond and cond2,0)>=1) then
begin
DRAWSL(1 ,price+100,0 ,0 ,0 );
price:=price+100;

 VARIABLE:mark:=0,price:=2700;
T:time;
cond:year=2018 and MONTH=7 and day=13;
cond2:time=140000;


if  (cond and cond2) then
begin
DRAWSL(1 ,PRICE,0 ,0 ,2);
PRICE:=PRICE+100;
end  

if (h>price+100 and count(cond and cond2,0)>=1) then
begin
DRAWSL(1 ,price+100,0 ,0 ,2 );
price:=price+100;
end



改了下DRAWSL的参数。但是没办法使得起点一致。只能使得原来的线变成双向延伸。