دردشة عامة لأشياء مختلفة

**فيلسوف البادية** · 24-09-2017, 02:48 AM

FLT_EPSILON
DBL_EPSILON

هل تضمن نتائج االمقارنة بين عددين عشريين من نوع double -float?

DBL_EPSILON=2.2204460492503131e-016
FLT_EPSILON=1.192092896e–07

**فيلسوف البادية** · 24-09-2017, 03:05 AM

sizeof all basic data types

trade_settings نوع من تحديد المستخدم- يحجز من الذااكرة با يتات تسااوي مجموع بايتات عناصر struct

كود PHP:

 struct trade_settings 
{ 
   char     char1;     //-128 to 127
   uchar    uchar1;    //0-255
   short    short1;    //-32768 and 32767
   ushort   ushort1;    //0-65535
   int      int1;         //-2 147 483 648, the maximal one is 2 147 483 647
   uint     uint1;         //0 to 4 294 967 295.
   long     long1;     //-9 223 372 036 854 775 808, the maximum value is 9 223 372 036 854 775 807.
   ulong    ulong1;    //0 to 18 446 744 073 709 551 615
   color    color1;    //
   datetime datetime1;    //
   bool     bool1;         //
   float    float1;         //
   double   double1;    //
   string   string1;    //
};
   //--- Parametric constructor 
void OnStart()
{
   trade_settings  c;
   Print("------------------------------------------------- = ",sizeof(trade_settings)); 
   Print("sizeof(char1) = "      ,sizeof(c.char1)     ); 
   Print("sizeof(uchar1) = "     ,sizeof(c.uchar1)    ); 
   Print("sizeof(short1) = "     ,sizeof(c.short1)    ); 
   Print("sizeof(ushort1) = "    ,sizeof(c.ushort1)   ); 
   Print("sizeof(int1) = "       ,sizeof(c.int1)      ); 
   Print("sizeof(uint1) = "      ,sizeof(c.uint1)     ); 
   Print("sizeof(long1) = "      ,sizeof(c.long1)     ); 
   Print("sizeof(ulong1) = "     ,sizeof(c.ulong1)    ); 
   Print("sizeof(color1) = "     ,sizeof(c.color1)    ); 
   Print("sizeof(datetime1) = "  ,sizeof(c.datetime1) ); 
   Print("sizeof(bool1) = "      ,sizeof(c.bool1)     ); 
   Print("sizeof(float1) = "     ,sizeof(c.float1)    ); 
   Print("sizeof(double1) = "    ,sizeof(c.double1)   ); 
   Print("sizeof(string1) = "    ,sizeof(c.string1)   ); 
   Print("------------------------------------------------- = "); 
}

**فيلسوف البادية** · 24-09-2017, 06:34 AM

ماهو الافضل لانددكس ااي عملة؟ الجمع ام الضرب؟

الضرب:
EUR^7= (EURGBP)*(EURAUD)*(EURNZD)*(EURUSD)*(EURCAD)*(EURC HF)*(EURJPY/100) F

**فيلسوف البادية** · 24-09-2017, 07:38 AM

EUR^7= (EURGBP)*(EURAUD)*(EURNZD)*(EURUSD)*(EURCAD)*(EURC HF)*(EURJPY/100) F

كود PHP:

 #property indicator_separate_window

#property indicator_buffers 8

#property indicator_plots   8

//--- plot Label1EURGBP

#property indicator_label1  "EUR"

#property indicator_type1   DRAW_LINE

#property indicator_color1  clrWhite

#property indicator_style1  STYLE_SOLID

#property indicator_width1  1

//--- plot Label2

#property indicator_label2  "GBP"

#property indicator_type2   DRAW_LINE

#property indicator_color2  clrViolet

#property indicator_style2  STYLE_SOLID

#property indicator_width2  1

//--- plot Label3

#property indicator_label3  "AUD"

#property indicator_type3   DRAW_LINE

#property indicator_color3  clrRed

#property indicator_style3  STYLE_SOLID

#property indicator_width3  1

//--- plot Label4

#property indicator_label4  "NZD"

#property indicator_type4   DRAW_LINE

#property indicator_color4  clrBlue

#property indicator_style4  STYLE_SOLID

#property indicator_width4  1

//--- plot Label5

#property indicator_label5  "USD"

#property indicator_type5   DRAW_LINE

#property indicator_color5  clrYellow

#property indicator_style5  STYLE_SOLID

#property indicator_width5  1

//--- plot Label6

#property indicator_label6  "CAD"

#property indicator_type6   DRAW_LINE

#property indicator_color6  clrGray

#property indicator_style6  STYLE_SOLID

#property indicator_width6  1

//--- plot Label7

#property indicator_label7  "CHF"

#property indicator_type7   DRAW_LINE

#property indicator_color7  clrOrange

#property indicator_style7  STYLE_SOLID

#property indicator_width7  1

//--- plot Label8

#property indicator_label8  "JPY"

#property indicator_type8   DRAW_LINE

#property indicator_color8  clrLime

#property indicator_style8  STYLE_SOLID

#property indicator_width8  1

//--- indicator buffers

double         Label1Buffer[];

double         Label2Buffer[];

double         Label3Buffer[];

double         Label4Buffer[];

double         Label5Buffer[];

double         Label6Buffer[];

double         Label7Buffer[];

double         Label8Buffer[];

//+------------------------------------------------------------------+

//| Custom indicator initialization function                         |

//+------------------------------------------------------------------+

int OnInit()

  {

//--- indicator buffers mapping

   SetIndexBuffer(0,Label1Buffer);

   SetIndexBuffer(1,Label2Buffer);

   SetIndexBuffer(2,Label3Buffer);

   SetIndexBuffer(3,Label4Buffer);

   SetIndexBuffer(4,Label5Buffer);

   SetIndexBuffer(5,Label6Buffer);

   SetIndexBuffer(6,Label7Buffer);

   SetIndexBuffer(7,Label8Buffer);

   

//---

   return(INIT_SUCCEEDED);

  }

//+------------------------------------------------------------------+

//| Custom indicator iteration function                              |

//+------------------------------------------------------------------+

int OnCalculate(const int rates_total,

                const int prev_calculated,

                const datetime &time[],

                const double &open[],

                const double &high[],

                const double &low[],

                const double &close[],

                const long &tick_volume[],

                const long &volume[],

                const int &spread[])

  {

int TT=100;

   double Label1=iClose("EURGBP",0,TT)*iClose("EURAUD",0,TT)*iClose("EURNZD",0,TT)*iClose("EURUSD",0,TT)*iClose("EURCAD",0,TT)*iClose("EURCHF",0,TT)*iClose("EURJPY",0,TT)/100.0;

   double Label2=1.0/iClose("EURGBP",0,TT)*iClose("GBPAUD",0,TT)*iClose("GBPNZD",0,TT)*iClose("GBPUSD",0,TT)*iClose("GBPCAD",0,TT)*iClose("GBPCHF",0,TT)*iClose("GBPJPY",0,TT)/100.0;

   double Label3=1.0/(iClose("EURAUD",0,TT)*iClose("GBPAUD",0,TT))*iClose("AUDNZD",0,TT)*iClose("AUDUSD",0,TT)*iClose("AUDCAD",0,TT)*iClose("AUDCHF",0,TT)*iClose("AUDJPY",0,TT)/100.0;

   double Label4=1.0/(iClose("EURNZD",0,TT)*iClose("GBPNZD",0,TT)*iClose("AUDNZD",0,TT))*iClose("NZDUSD",0,TT)*iClose("NZDCAD",0,TT)*iClose("NZDCHF",0,TT)*iClose("NZDJPY",0,TT)/100.0;

   double Label5=1.0/(iClose("EURUSD",0,TT)*iClose("GBPUSD",0,TT)*iClose("AUDUSD",0,TT)*iClose("NZDUSD",0,TT))*iClose("USDCAD",0,TT)*iClose("USDCHF",0,TT)*iClose("USDJPY",0,TT)/100.0;

   double Label6=1.0/(iClose("EURCAD",0,TT)*iClose("GBPCAD",0,TT)*iClose("AUDCAD",0,TT)*iClose("NZDCAD",0,TT)*iClose("USDCAD",0,TT))*iClose("CADCHF",0,TT)*iClose("CADJPY",0,TT)/100.0;

   double Label7=1.0/(iClose("EURCHF",0,TT)*iClose("GBPCHF",0,TT)*iClose("AUDCHF",0,TT)*iClose("NZDCHF",0,TT)*iClose("USDCHF",0,TT)*iClose("CADCHF",0,TT))*iClose("CHFJPY",0,TT)/100.0;

   double Label8=1.0/(iClose("EURJPY",0,TT)/100.0*iClose("GBPJPY",0,TT)/100.0*iClose("AUDJPY",0,TT)/100.0*iClose("NZDJPY",0,TT)/100.0*iClose("USDJPY",0,TT)/100.0*iClose("CADJPY",0,TT)/100.0*iClose("CHFJPY",0,TT)/100.0);

 
 
 
 
         for(int m=0;m<=800;m++)  {

 
   Label1Buffer[m]=MathPow(iClose("EURGBP",0,m)*iClose("EURAUD",0,m)*iClose("EURNZD",0,m)*iClose("EURUSD",0,m)*iClose("EURCAD",0,m)*iClose("EURCHF",0,m)*iClose("EURJPY",0,m)/100.0/Label1,1.0/7.0);

   Label2Buffer[m]=MathPow(1.0/iClose("EURGBP",0,m)*iClose("GBPAUD",0,m)*iClose("GBPNZD",0,m)*iClose("GBPUSD",0,m)*iClose("GBPCAD",0,m)*iClose("GBPCHF",0,m)*iClose("GBPJPY",0,m)/100.0/Label2,1.0/7.0);

   Label3Buffer[m]=MathPow(1.0/(iClose("EURAUD",0,m)*iClose("GBPAUD",0,m))*iClose("AUDNZD",0,m)*iClose("AUDUSD",0,m)*iClose("AUDCAD",0,m)*iClose("AUDCHF",0,m)*iClose("AUDJPY",0,m)/100.0/Label3,1.0/7.0);

   Label4Buffer[m]=MathPow(1.0/(iClose("EURNZD",0,m)*iClose("GBPNZD",0,m)*iClose("AUDNZD",0,m))*iClose("NZDUSD",0,m)*iClose("NZDCAD",0,m)*iClose("NZDCHF",0,m)*iClose("NZDJPY",0,m)/100.0/Label4,1.0/7.0);

   Label5Buffer[m]=MathPow(1.0/(iClose("EURUSD",0,m)*iClose("GBPUSD",0,m)*iClose("AUDUSD",0,m)*iClose("NZDUSD",0,m))*iClose("USDCAD",0,m)*iClose("USDCHF",0,m)*iClose("USDJPY",0,m)/100.0/Label5,1.0/7.0);

   Label6Buffer[m]=MathPow(1.0/(iClose("EURCAD",0,m)*iClose("GBPCAD",0,m)*iClose("AUDCAD",0,m)*iClose("NZDCAD",0,m)*iClose("USDCAD",0,m))*iClose("CADCHF",0,m)*iClose("CADJPY",0,m)/100.0/Label6,1.0/7.0);

   Label7Buffer[m]=MathPow(1.0/(iClose("EURCHF",0,m)*iClose("GBPCHF",0,m)*iClose("AUDCHF",0,m)*iClose("NZDCHF",0,m)*iClose("USDCHF",0,m)*iClose("CADCHF",0,m))*iClose("CHFJPY",0,m)/100.0/Label7,1.0/7.0);

   Label8Buffer[m]=MathPow(1.0/(iClose("EURJPY",0,m)/100.0*iClose("GBPJPY",0,m)/100.0*iClose("AUDJPY",0,m)/100.0*iClose("NZDJPY",0,m)/100.0*iClose("USDJPY",0,m)/100.0*iClose("CADJPY",0,m)/100.0*iClose("CHFJPY",0,m)/100.0)/Label8,1.0/7.0);

 
  }

   return(rates_total);

  }

//+------------------------------------------------------------------+

**فيلسوف البادية** · 24-09-2017, 08:37 AM

ماهو االفرق بين packed structures و unpacked structures ؟

**فيلسوف البادية** · 24-09-2017, 08:41 AM

كود PHP:

 struct trade_settings 

  { 

   uchar  slippage;     // value of the permissible slippage-size 1 byte 

   char   reserved1;    // skip 1 byte 

   short  reserved2;    // skip 2 bytes 

   int    reserved4;    // another 4 bytes are skipped. ensure alignment of the boundary 8 bytes 

   double take;         // values of the price of profit fixing 

   double stop;         // price value of the protective stop 

  };

Attention: This example illustrates incorrectly designed data. It would be better first to declare the take and stop large data of the double type, and then declare the slippage member of the uchar type. In this case, the internal representation of data will always be the same regardless of the value specified in #pragma pack().

**فيلسوف البادية** · 24-09-2017, 09:22 PM

ماهو االفرق بين Default constructor و Parametric constructor ؟

**فيلسوف البادية** · 26-09-2017, 06:47 AM

هل تعلم اان CHART_SHOW_ONE_CLICK موجودة في MQL4 رغم انك لاتجدها في MQL4 Reference

**فيلسوف البادية** · 26-09-2017, 07:09 AM

ومثلها

CHART_IS_MAXIMIZED ENUM_CHART_PROPERTY_INTEGER
CHART_IS_MINIMIZED ENUM_CHART_PROPERTY_INTEGER
CHART_IS_OBJECT ENUM_CHART_PROPERTY_INTEGER
CHART_KEYBOARD_CONTROL ENUM_CHART_PROPERTY_INTEGER
CHART_SHOW_ONE_CLICK ENUM_CHART_PROPERTY_INTEGER

**فيلسوف البادية** · 26-09-2017, 07:12 AM

بينما خاص ب ةMQL5

CHART_CONTEXT_MENU ENUM_CHART_PROPERTY_INTEGER
CHART_CROSSHAIR_TOOL ENUM_CHART_PROPERTY_INTEGER
CHART_EVENT_MOUSE_WHEEL ENUM_CHART_PROPERTY_INTEGER
CHART_SHOW ENUM_CHART_PROPERTY_INTEGER
CHART_EXPERT_NAME ENUM_CHART_PROPERTY_STRING
CHART_SCRIPT_NAME ENUM_CHART_PROPERTY_STRING

**فيلسوف البادية** · 26-09-2017, 07:13 AM

بينما خاص ب ةMQL4

CHART_IS_OFFLINE ENUM_CHART_PROPERTY_INTEGER

**فيلسوف البادية** · 26-09-2017, 07:21 AM

45 CHART_AUTOSCROLL
45 CHART_BRING_TO_TOP
45 CHART_COLOR_ASK
45 CHART_COLOR_BACKGROUND
45 CHART_COLOR_BID
45 CHART_COLOR_CANDLE_BEAR
45 CHART_COLOR_CANDLE_BULL
45 CHART_COLOR_CHART_DOWN
45 CHART_COLOR_CHART_LINE
45 CHART_COLOR_CHART_UP
45 CHART_COLOR_FOREGROUND
45 CHART_COLOR_GRID
45 CHART_COLOR_LAST
45 CHART_COLOR_STOP_LEVEL
45 CHART_COLOR_VOLUME
45 CHART_COMMENT
5 CHART_CONTEXT_MENU
5 CHART_CROSSHAIR_TOOL
45 CHART_DRAG_TRADE_LEVELS
45 CHART_EVENT_MOUSE_MOVE
5 CHART_EVENT_MOUSE_WHEEL
45 CHART_EVENT_OBJECT_CREATE
45 CHART_EVENT_OBJECT_DELETE
5 CHART_EXPERT_NAME
45 CHART_FIRST_VISIBLE_BAR
45 CHART_FIXED_MAX
45 CHART_FIXED_MIN
45 CHART_FIXED_POSITION
45 CHART_FOREGROUND
45 CHART_HEIGHT_IN_PIXELS
5 CHART_IS_MAXIMIZED
5 CHART_IS_MINIMIZED
45 CHART_IS_OBJECT
4 CHART_IS_OFFLINE
45 CHART_KEYBOARD_CONTROL
45 CHART_MODE
45 CHART_MOUSE_SCROLL
45 CHART_POINTS_PER_BAR
45 CHART_PRICE_MAX
45 CHART_PRICE_MIN
45 CHART_QUICK_NAVIGATION
45 CHART_SCALE
45 CHART_SCALE_PT_PER_BAR
45 CHART_SCALEFIX
45 CHART_SCALEFIX_11
5 CHART_SCRIPT_NAME
45 CHART_SHIFT
45 CHART_SHIFT_SIZE
5 CHART_SHOW
45 CHART_SHOW_ASK_LINE
45 CHART_SHOW_BID_LINE
45 CHART_SHOW_DATE_SCALE
45 CHART_SHOW_GRID
45 CHART_SHOW_LAST_LINE
45 CHART_SHOW_OBJECT_DESCR
45 CHART_SHOW_OHLC
45 CHART_SHOW_ONE_CLICK
45 CHART_SHOW_PERIOD_SEP
45 CHART_SHOW_PRICE_SCALE
45 CHART_SHOW_TRADE_LEVELS
45 CHART_SHOW_VOLUMES
45 CHART_VISIBLE_BARS
45 CHART_WIDTH_IN_BARS
45 CHART_WIDTH_IN_PIXELS
45 CHART_WINDOW_HANDLE
45 CHART_WINDOW_IS_VISIBLE
45 CHART_WINDOW_YDISTANCE
45 CHART_WINDOWS_TOTAL

**أبو نـاصر** · 26-09-2017, 01:44 PM

المشاركة الأصلية كتبت بواسطة فيلسوف البادية

هل تعلم اان CHART_SHOW_ONE_CLICK موجودة في MQL4 رغم انك لاتجدها في MQL4 Reference

شكرا لك
هل يمكن تعطيل عملها ؟

**فيلسوف البادية** · 26-09-2017, 04:18 PM

المشاركة الأصلية كتبت بواسطة أبو نـاصر

شكرا لك
هل يمكن تعطيل عملها ؟

نعم-اذا اصبحت غير موجودة
set tttt to false
سكربت--طبقه على التشارت فتختفي مع سهمهاا

كود PHP:

 void OnStart()

  {

ChartSetInteger(0,CHART_SHOW_ONE_CLICK,0,false);

}

**فيلسوف البادية** · 28-09-2017, 01:51 AM

ChartNavigate

هل تعلم اهميتها؟؟
ج:
loading historical data

كود PHP:

 bool  ChartNavigate( 
   long  chart_id,     // Chart ID 
   int   position,     // Position 
   int   shift=0       // Shift value 
   );

[shift Number of bars to shift the chart. Positive value means the right shift (to the end of chart), negative value means the left shift (to the beginning of chart)..

الموضوع: دردشة عامة لأشياء مختلفة

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دردشة عامة لأشياء مختلفة

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