9.2 KiB
9.2 KiB
OBJ_ARROW_SELL
Sell sign.
Example
The following script creates and moves Sell sign on the chart. Special functions have been developed to create and change graphical object's properties. You can use these functions "as is" in your own applications.
//--- description
#property description "Script draws \"Sell\" signs in the chart window."
//--- display window of the input parameters during the script's launch
#property script_show_inputs
//--- input parameters of the script
input color InpColor=C'225,68,29'; // Color of signs
//+------------------------------------------------------------------+
//| Create Sell sign |
//+------------------------------------------------------------------+
bool ArrowSellCreate(const long chart_ID=0, // chart's ID
const string name="ArrowSell", // sign name
const int sub_window=0, // subwindow index
datetime time=0, // anchor point time
double price=0, // anchor point price
const color clr=C'225,68,29', // sign color
const ENUM_LINE_STYLE style=STYLE_SOLID, // line style (when highlighted)
const int width=1, // line size (when highlighted)
const bool back=false, // in the background
const bool selection=false, // highlight to move
const bool hidden=true, // hidden in the object list
const long z_order=0) // priority for mouse click
{
//--- set anchor point coordinates if they are not set
ChangeArrowEmptyPoint(time,price);
//--- reset the error value
ResetLastError();
//--- create the sign
if(!ObjectCreate(chart_ID,name,OBJ_ARROW_SELL,sub_window,time,price))
{
Print(__FUNCTION__,
": failed to create \"Sell\" sign! Error code = ",GetLastError());
return(false);
}
//--- set a sign color
ObjectSetInteger(chart_ID,name,OBJPROP_COLOR,clr);
//--- set a line style (when highlighted)
ObjectSetInteger(chart_ID,name,OBJPROP_STYLE,style);
//--- set a line size (when highlighted)
ObjectSetInteger(chart_ID,name,OBJPROP_WIDTH,width);
//--- display in the foreground (false) or background (true)
ObjectSetInteger(chart_ID,name,OBJPROP_BACK,back);
//--- enable (true) or disable (false) the mode of moving the sign by mouse
ObjectSetInteger(chart_ID,name,OBJPROP_SELECTABLE,selection);
ObjectSetInteger(chart_ID,name,OBJPROP_SELECTED,selection);
//--- hide (true) or display (false) graphical object name in the object list
ObjectSetInteger(chart_ID,name,OBJPROP_HIDDEN,hidden);
//--- set the priority for receiving the event of a mouse click in the chart
ObjectSetInteger(chart_ID,name,OBJPROP_ZORDER,z_order);
//--- successful execution
return(true);
}
//+------------------------------------------------------------------+
//| Move the anchor point |
//+------------------------------------------------------------------+
bool ArrowSellMove(const long chart_ID=0, // chart's ID
const string name="ArrowSell", // object name
datetime time=0, // anchor point time coordinate
double price=0) // anchor point price coordinate
{
//--- if point position is not set, move it to the current bar having Bid price
if(!time)
time=TimeCurrent();
if(!price)
price=SymbolInfoDouble(Symbol(),SYMBOL_BID);
//--- reset the error value
ResetLastError();
//--- move the anchor point
if(!ObjectMove(chart_ID,name,0,time,price))
{
Print(__FUNCTION__,
": failed to move the anchor point! Error code = ",GetLastError());
return(false);
}
//--- successful execution
return(true);
}
//+------------------------------------------------------------------+
//| Delete Sell sign |
//+------------------------------------------------------------------+
bool ArrowSellDelete(const long chart_ID=0, // chart's ID
const string name="ArrowSell") // sign name
{
//--- reset the error value
ResetLastError();
//--- delete the sign
if(!ObjectDelete(chart_ID,name))
{
Print(__FUNCTION__,
": failed to delete \"Sell\" sign! Error code = ",GetLastError());
return(false);
}
//--- successful execution
return(true);
}
//+------------------------------------------------------------------+
//| Check anchor point values and set default values |
//| for empty ones |
//+------------------------------------------------------------------+
void ChangeArrowEmptyPoint(datetime &time,double &price)
{
//--- if the point's time is not set, it will be on the current bar
if(!time)
time=TimeCurrent();
//--- if the point's price is not set, it will have Bid value
if(!price)
price=SymbolInfoDouble(Symbol(),SYMBOL_BID);
}
//+------------------------------------------------------------------+
//| Script program start function |
//+------------------------------------------------------------------+
void OnStart()
{
datetime date[]; // array for storing dates of visible bars
double low[]; // array for storing Low prices of visible bars
double high[]; // array for storing High prices of visible bars
//--- number of visible bars in the chart window
int bars=(int)ChartGetInteger(0,CHART_VISIBLE_BARS);
//--- memory allocation
ArrayResize(date,bars);
ArrayResize(low,bars);
ArrayResize(high,bars);
//--- fill the array of dates
ResetLastError();
if(CopyTime(Symbol(),Period(),0,bars,date)==-1)
{
Print("Failed to copy time values! Error code = ",GetLastError());
return;
}
//--- fill the array of Low prices
if(CopyLow(Symbol(),Period(),0,bars,low)==-1)
{
Print("Failed to copy the values of Low prices! Error code = ",GetLastError());
return;
}
//--- fill the array of High prices
if(CopyHigh(Symbol(),Period(),0,bars,high)==-1)
{
Print("Failed to copy the values of High prices! Error code = ",GetLastError());
return;
}
//--- create Sell signs in High point for each visible bar
for(int i=0;i<bars;i++)
{
if(!ArrowSellCreate(0,"ArrowSell_"+(string)i,0,date[i],high[i],InpColor))
return;
//--- check if the script's operation has been forcefully disabled
if(IsStopped())
return;
//--- redraw the chart
ChartRedraw();
// 0.05 seconds of delay
Sleep(50);
}
//--- move Sell signs to Low point for each visible bar
for(int i=0;i<bars;i++)
{
if(!ArrowSellMove(0,"ArrowSell_"+(string)i,date[i],low[i]))
return;
//--- check if the script's operation has been forcefully disabled
if(IsStopped())
return;
//--- redraw the chart
ChartRedraw();
// 0.05 seconds of delay
Sleep(50);
}
//--- delete Sell signs
for(int i=0;i<bars;i++)
{
if(!ArrowSellDelete(0,"ArrowSell_"+(string)i))
return;
//--- redraw the chart
ChartRedraw();
// 0.05 seconds of delay
Sleep(50);
}
//---
}