趋势王完全是根据道氏理论中的顺势而为原则而做，它非常明确的展现了趋势的力量，趋势一旦形成，绝不会轻易反转，这是趋势王成立的理论基础。
趋势王不论从那个角度来将，都展现了一种别出心裁的设计。它不但把大级别的趋势明确的展现出来，而且把小级别的次要趋势也能在图表中完全展现。从另一个角度说，只要有趋势王这个交易系统，你不但可以做中长线，而且可以做波段，所有级别买卖一览无余。
源码
{通达信-弘历趋势王}
A1:=(EMA((OPEN+HIGH+LOW+CLOSE)/4,3)+EMA((OPEN+HIGH+LOW+CLOSE)/4,6)+EMA((OPEN+HIGH+LOW+CLOSE)/4,9))/3;
A2:=(EMA((OPEN+HIGH+LOW+CLOSE)/4,5)+EMA((OPEN+HIGH+LOW+CLOSE)/4,10)+EMA((OPEN+HIGH+LOW+CLOSE)/4,20))/3;
A3:=(EMA((OPEN+HIGH+LOW+CLOSE)/4,7)+EMA((OPEN+HIGH+LOW+CLOSE)/4,14)+EMA((OPEN+HIGH+LOW+CLOSE)/4,28))/3;
A4:=(EMA((OPEN+HIGH+LOW+CLOSE)/4,9)+EMA((OPEN+HIGH+LOW+CLOSE)/4,18)+EMA((OPEN+HIGH+LOW+CLOSE)/4,36))/3;
A5:=(EMA((OPEN+HIGH+LOW+CLOSE)/4,11)+EMA((OPEN+HIGH+LOW+CLOSE)/4,22)+EMA((OPEN+HIGH+LOW+CLOSE)/4,44))/3;
A6:=(EMA((OPEN+HIGH+LOW+CLOSE)/4,13)+EMA((OPEN+HIGH+LOW+CLOSE)/4,26)+EMA((OPEN+HIGH+LOW+CLOSE)/4,52))/3;
A7:=(EMA((OPEN+HIGH+LOW+CLOSE)/4,21)+EMA((OPEN+HIGH+LOW+CLOSE)/4,34)+EMA((OPEN+HIGH+LOW+CLOSE)/4,68))/3;
VAR1:=FORCAST(A1,6);
VAR2:=FORCAST(A2,6);
VAR3:=FORCAST(A3,6);
VAR4:=FORCAST(A4,6);
VAR5:=FORCAST(A5,6);
VAR6:=FORCAST(A6,6);
VAR7:=FORCAST(A7,6);
IF(VAR1>REF(VAR1,1),VAR1,DRAWNULL),POINTDOT,COLORFF00FF;
IF(VAR1<REF(VAR1,1),VAR1,DRAWNULL),POINTDOT,COLOR00FF00;
IF(VAR2>REF(VAR2,1),VAR2,DRAWNULL),POINTDOT,COLORFF00FF;
IF(VAR2<REF(VAR2,1),VAR2,DRAWNULL),POINTDOT,COLOR00FF00;
IF(VAR3>REF(VAR3,1),VAR3,DRAWNULL),POINTDOT,COLORFF00FF;
IF(VAR3<REF(VAR3,1),VAR3,DRAWNULL),POINTDOT,COLOR00FF00;
IF(VAR4>REF(VAR4,1),VAR4,DRAWNULL),POINTDOT,COLORFF00FF;
IF(VAR4<REF(VAR4,1),VAR4,DRAWNULL),POINTDOT,COLOR00FF00;
IF(VAR5>REF(VAR5,1),VAR5,DRAWNULL),POINTDOT,COLORFF00FF;
IF(VAR5<REF(VAR5,1),VAR5,DRAWNULL),POINTDOT,COLOR00FF00;
IF(VAR6>REF(VAR6,1),VAR6,DRAWNULL),POINTDOT,COLORFF00FF;
IF(VAR6<REF(VAR6,1),VAR6,DRAWNULL),POINTDOT,COLOR00FF00;
IF(VAR7>REF(VAR7,1),VAR7,DRAWNULL),LINETHICK2,COLORFF00FF;
IF(VAR7<REF(VAR7,1),VAR7,DRAWNULL),LINETHICK2,COLOR00FF00;
TOWERC:=FORCAST(EMA((3*CLOSE+2*OPEN+HIGH+LOW)/7,3),6);
DIRECTIONMAX:=MAX(REF(TOWERC,1),REF(TOWERC,1));
DIRECTIONMIN:=MIN(REF(TOWERC,1),REF(TOWERC,1));
STICKLINE(TOWERC>=REF(TOWERC,1),TOWERC,DIRECTIONMAX,4,0),COLOR0000FF;
STICKLINE(TOWERC<REF(TOWERC,1),TOWERC,DIRECTIONMIN,4,0),COLOR00FF00;
