mt4函数和编程必备(6)

void SetIndexArrow( int index, int code) 在指标上设置一个箭头符号

:: 输入参数

index - 第几根指标线 0-7

code - 符号的编码，参照 Wingdings 字体

示例:

SetIndexArrow(0, 217);

bool SetIndexBuffer( int index, double array[]) 设置指标线的缓存数组

:: 输入参数

index - 第几根指标线 0-7 array[] - 缓存的数组

示例:

double ExtBufferSilver[]; int init() { SetIndexBuffer(0, ExtBufferSilver); // set buffer for first line // ... }

void SetIndexDrawBegin( int index, int begin) 设置划线的开始点

:: 输入参数

index - 第几根指标线 0-7 begin - 划线的开始点

示例:

#property indicator_separate_window #property indicator_buffers 1 #property indicator_color1 Silver //---- indicator parameters extern int FastEMA=12; extern int SlowEMA=26; extern int SignalSMA=9; //---- indicator buffers double ind_buffer1[]; double ind_buffer2[]; double ind_buffer3[]; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { //---- 2 additional buffers are used for counting. IndicatorBuffers(3); //---- drawing settings SetIndexStyle(0,DRAW_HISTOGRAM,STYLE_SOLID,3); SetIndexDrawBegin(0,SignalSMA); IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+2); //---- 3 indicator buffers mapping SetIndexBuffer(0,ind_buffer1); SetIndexBuffer(1,ind_buffer2); SetIndexBuffer(2,ind_buffer3); //---- name for DataWindow and indicator subwindow label IndicatorShortName(\//---- initialization done return(0); }

void SetIndexEmptyValue( int index, double value) 设置划线的空值，空值不划在和出现在数据窗口

:: 输入参数

index - 第几根指标线 0-7 value - 新的空值

示例:

SetIndexEmptyValue(6,0.0001);

void SetIndexLabel( int index, string text) 设置指标线的名称

:: 输入参数

index - 第几根指标线 0-7

text - 线的名称，Null不会显示在数据窗口中

示例:

//+------------------------------------------------------------------+ //| Ichimoku Kinko Hyo initialization function | //+------------------------------------------------------------------+ int init() { //---- SetIndexStyle(0,DRAW_LINE); SetIndexBuffer(0,Tenkan_Buffer); SetIndexDrawBegin(0,Tenkan-1); SetIndexLabel(0,\//---- SetIndexStyle(1,DRAW_LINE); SetIndexBuffer(1,Kijun_Buffer); SetIndexDrawBegin(1,Kijun-1); SetIndexLabel(1,\//---- a_begin=Kijun; if(a_begin SetIndexStyle(2,DRAW_HISTOGRAM,STYLE_DOT); SetIndexBuffer(2,SpanA_Buffer); SetIndexDrawBegin(2,Kijun+a_begin-1); SetIndexShift(2,Kijun); //---- Up Kumo bounding line does not show in the DataWindow SetIndexLabel(2,NULL); SetIndexStyle(5,DRAW_LINE,STYLE_DOT); SetIndexBuffer(5,SpanA2_Buffer); SetIndexDrawBegin(5,Kijun+a_begin-1); SetIndexShift(5,Kijun); SetIndexLabel(5,\//---- SetIndexStyle(3,DRAW_HISTOGRAM,STYLE_DOT); SetIndexBuffer(3,SpanB_Buffer); SetIndexDrawBegin(3,Kijun+Senkou-1); SetIndexShift(3,Kijun); //---- Down Kumo bounding line does not show in the DataWindow SetIndexLabel(3,NULL); //---- SetIndexStyle(6,DRAW_LINE,STYLE_DOT); SetIndexBuffer(6,SpanB2_Buffer); SetIndexDrawBegin(6,Kijun+Senkou-1); SetIndexShift(6,Kijun); SetIndexLabel(6,\//---- SetIndexStyle(4,DRAW_LINE); SetIndexBuffer(4,Chinkou_Buffer); SetIndexShift(4,-Kijun); SetIndexLabel(4,\//---- return(0); }

void SetIndexShift( int index, int shift) 设置指标线的位移数

:: 输入参数

index - 第几根指标线 0-7 shift - 位移多少

示例:

//+------------------------------------------------------------------+ //| Alligator initialization function | //+------------------------------------------------------------------+ int init() { //---- line shifts when drawing SetIndexShift(0,JawsShift); SetIndexShift(1,TeethShift); SetIndexShift(2,LipsShift); //---- first positions skipped when drawing SetIndexDrawBegin(0,JawsShift+JawsPeriod); SetIndexDrawBegin(1,TeethShift+TeethPeriod); SetIndexDrawBegin(2,LipsShift+LipsPeriod); //---- 3 indicator buffers mapping SetIndexBuffer(0,ExtBlueBuffer); SetIndexBuffer(1,ExtRedBuffer); SetIndexBuffer(2,ExtLimeBuffer); //---- drawing settings SetIndexStyle(0,DRAW_LINE); SetIndexStyle(1,DRAW_LINE); SetIndexStyle(2,DRAW_LINE); //---- index labels SetIndexLabel(0,\SetIndexLabel(1,\SetIndexLabel(2,\//---- initialization done return(0); }

void SetIndexStyle( int index, int type, int style=EMPTY, int width=EMPTY, color clr=CLR_NONE) 设置指标线的样式

:: 输入参数

index - 第几根指标线 0-7

type - 线形状的种类，详见线条种类 style - 划线的样式

width - 显得宽度(1,2,3,4,5) clr - 线的颜色

示例:

SetIndexStyle(3, DRAW_LINE, EMPTY, 2, Red); 日期时间函数 [Date & Time Functions]

datetime CurTime( ) 返回当前时间 示例:

if(CurTime()-OrderOpenTime()<360) return(0);

int Day() 返回当前日期 示例:

if(Day()<5) return(0);

int DayOfWeek( )

返回当前日期是星期几 0-星期天,1,2,3,4,5,6

示例:

// do not work on holidays. if(DayOfWeek()==0 || DayOfWeek()==6) return(0);

int DayOfYear( ) 返回当前日期在年内的第几天 示例:

if(DayOfYear()==245) return(true);

int Hour()

返回当前的小时数 0-23 示例:

bool is_siesta=false; if(Hour()>=12 || Hour()<17) is_siesta=true;

datetime LocalTime() 返回当前电脑时间 示例:

if(LocalTime()-OrderOpenTime()<360) return(0);

int Minute() 返回当前分钟 示例:

if(Minute()<=15) return(\

int Month() 返回当前月份 示例:

if(Month()<=5) return(\

int Seconds() 返回当前秒数 示例:

if(Seconds()<=15) return(0);

int TimeDay( datetime date) 返回输入日期中的日期