MQL4参考标准常量，列举和架构图表常量 图表性能

Chart Properties

Identifiers of ENUM_CHART_PROPERTY enumerations are used as parameters of functions for working with charts. The abbreviation of r/o in the "Property Type" column means that this property is read-only and cannot be changed. The w/o abbreviation in the "Property Type" column means that this property is write-only and it cannot be received. When accessing certain properties, it's necessary to specify an additional parameter-modifier (modifier), which serves to indicate the number of chart subwindows. 0 means the main window.

For functions ChartSetInteger() and ChartGetInteger()

ENUM_CHART_PROPERTY_INTEGER

ID	Description	Property Type
CHART_BRING_TO_TOP	Show chart on top of other charts	bool w/o
CHART_MOUSE_SCROLL	Scrolling the chart horizontally using the left mouse button. Vertical scrolling is also available if the value of any following properties is set to true: CHART_SCALEFIX, CHART_SCALEFIX_11 or CHART_SCALE_PT_PER_BAR	bool
CHART_EVENT_MOUSE_MOVE	Send notifications of mouse move and mouse click events (CHARTEVENT_MOUSE_MOVE) to all mql4 programs on a chart	bool
CHART_EVENT_OBJECT_CREATE	Send a notification of an event of new object creation (CHARTEVENT_OBJECT_CREATE) to all mql4-programs on a chart	bool
CHART_EVENT_OBJECT_DELETE	Send a notification of an event of object deletion (CHARTEVENT_OBJECT_DELETE) to all mql4-programs on a chart	bool
CHART_MODE	Chart type (candlesticks, bars or line)	enum ENUM_CHART_MODE
CHART_FOREGROUND	Price chart in the foreground	bool
CHART_SHIFT	Mode of price chart indent from the right border	bool
CHART_AUTOSCROLL	Mode of automatic moving to the right border of the chart	bool
CHART_QUICK_NAVIGATION	Allow the chart to intercept Space and Enter key strokes to activate the quick navigation bar. The quick navigation bar automatically appears at the bottom of the chart after double-clicking the mouse or pressing Space/Enter. It allows you to quickly change a symbol, timeframe and first visible bar date.	bool
CHART_SCALE	Scale	int from 0 to 5
CHART_SCALEFIX	Fixed scale mode	bool
CHART_SCALEFIX_11	Scale 1:1 mode	bool
CHART_SCALE_PT_PER_BAR	Scale to be specified in points per bar	bool
CHART_SHOW_OHLC	Show OHLC values in the upper left corner	bool
CHART_SHOW_BID_LINE	Display Bid values as a horizontal line in a chart	bool
CHART_SHOW_ASK_LINE	Display Ask values as a horizontal line in a chart	bool
CHART_SHOW_LAST_LINE	Display Last values as a horizontal line in a chart	bool
CHART_SHOW_PERIOD_SEP	Display vertical separators between adjacent periods	bool
CHART_SHOW_GRID	Display grid in the chart	bool
CHART_SHOW_VOLUMES	Display volume in the chart	enum ENUM_CHART_VOLUME_MODE
CHART_SHOW_OBJECT_DESCR	Display textual descriptions of objects (not available for all objects)	bool
CHART_VISIBLE_BARS	The number of bars on the chart that can be displayed	int r/o
CHART_WINDOWS_TOTAL	The total number of chart windows, including indicator subwindows	int r/o
CHART_WINDOW_IS_VISIBLE	Visibility of subwindows	bool r/o modifier - subwindow number
CHART_WINDOW_HANDLE	Chart window handle (HWND)	int r/o
CHART_WINDOW_YDISTANCE	The distance between the upper frame of the indicator subwindow and the upper frame of the main chart window, along the vertical Y axis, in pixels. In case of a mouse event, the cursor coordinates are passed in terms of the coordinates of the main chart window, while the coordinates of graphical objects in an indicator subwindow are set relative to the upper left corner of the subwindow. The value is required for converting the absolute coordinates of the main chart to the local coordinates of a subwindow for correct work with the graphical objects, whose coordinates are set relative to the upper left corner of the subwindow frame.	int r/o modifier - subwindow number
CHART_FIRST_VISIBLE_BAR	Number of the first visible bar in the chart. Indexing of bars is the same as for timeseries.	int r/o
CHART_WIDTH_IN_BARS	Chart width in bars	int r/o
CHART_WIDTH_IN_PIXELS	Chart width in pixels	int r/o
CHART_HEIGHT_IN_PIXELS	Chart height in pixels	int modifier - subwindow number
CHART_COLOR_BACKGROUND	Chart background color	color
CHART_COLOR_FOREGROUND	Color of axes, scales and OHLC line	color
CHART_COLOR_GRID	Grid color	color
CHART_COLOR_VOLUME	Color of volumes and order opening levels	color
CHART_COLOR_CHART_UP	Color for the up bar, shadows and body borders of bull candlesticks	color
CHART_COLOR_CHART_DOWN	Color for the down bar, shadows and body borders of bear candlesticks	color
CHART_COLOR_CHART_LINE	Line chart color and color of "Doji" Japanese candlesticks	color
CHART_COLOR_CANDLE_BULL	Body color of a bull candlestick	color
CHART_COLOR_CANDLE_BEAR	Body color of a bear candlestick	color
CHART_COLOR_BID	Bid price level color	color
CHART_COLOR_ASK	Ask price level color	color
CHART_COLOR_LAST	Line color of the last executed deal price (Last)	color
CHART_COLOR_STOP_LEVEL	Color of stop order levels (Stop Loss and Take Profit)	color
CHART_SHOW_TRADE_LEVELS	Displaying trade levels in the chart (levels of open orders, Stop Loss, Take Profit and pending orders)	bool
CHART_DRAG_TRADE_LEVELS	Permission to drag trading levels on a chart with a mouse. The drag mode is enabled by default (true value)	bool
CHART_SHOW_DATE_SCALE	Showing the time scale on a chart	bool
CHART_SHOW_PRICE_SCALE	Showing the price scale on a chart	bool
CHART_IS_OFFLINE	Flag, indicating that chart opened in offline mode	bool r/o

For functions ChartSetDouble() and ChartGetDouble()

ENUM_CHART_PROPERTY_DOUBLE

ID	Description	Property Type
CHART_SHIFT_SIZE	The size of the zero bar indent from the right border in percents	double (from 10 to 50 percents)
CHART_FIXED_POSITION	Chart fixed position from the left border in percent value. Chart fixed position is marked by a small gray triangle on the horizontal time axis. It is displayed only if the automatic chart scrolling to the right on tick incoming is disabled (see CHART_AUTOSCROLL property). The bar on a fixed position remains in the same place when zooming in and out.	double
CHART_FIXED_MAX	Fixed chart maximum	double
CHART_FIXED_MIN	Fixed chart minimum	double
CHART_POINTS_PER_BAR	Scale in points per bar	double
CHART_PRICE_MIN	Chart minimum	double r/o modifier - subwindow number
CHART_PRICE_MAX	Chart maximum	double r/o modifier - subwindow number

For functions ChartSetString() and ChartGetString()

ENUM_CHART_PROPERTY_STRING

ID	Description	Property Type
CHART_COMMENT	Text of a comment in a chart	string

Example:

   int chartMode=ChartGetInteger(0,CHART_MODE);
   switch(chartMode)
     {
      case(CHART_BARS):    Print("CHART_BARS");   break;
      case(CHART_CANDLES): Print("CHART_CANDLES");break;
      default:Print("CHART_LINE");
     }
   bool shifted=ChartGetInteger(0,CHART_SHIFT);
   if(shifted) Print("CHART_SHIFT = true");
   else Print("CHART_SHIFT = false");
   bool autoscroll=ChartGetInteger(0,CHART_AUTOSCROLL);
   if(autoscroll) Print("CHART_AUTOSCROLL = true");
   else Print("CHART_AUTOSCROLL = false");
   int chartHandle=ChartGetInteger(0,CHART_WINDOW_HANDLE);
   Print("CHART_WINDOW_HANDLE = ",chartHandle);
   int windows=ChartGetInteger(0,CHART_WINDOWS_TOTAL);
   Print("CHART_WINDOWS_TOTAL = ",windows);
   if(windows>1)
     {
      for(int i=0;i<windows;i++)
        {
         int height=ChartGetInteger(0,CHART_HEIGHT_IN_PIXELS,i);
         double priceMin=ChartGetDouble(0,CHART_PRICE_MIN,i);
         double priceMax=ChartGetDouble(0,CHART_PRICE_MAX,i);
         Print(i+": CHART_HEIGHT_IN_PIXELS = ",height," pixels");
         Print(i+": CHART_PRICE_MIN = ",priceMin);
         Print(i+": CHART_PRICE_MAX = ",priceMax);
        }
     }