void OnStart()
{
//— string variables
string output_string;
string temp_string;
string format_string;
//— prepare the specification header
temp_string=StringFormat(“Contract specification for %s:\r\n”,_Symbol);
StringAdd(output_string,temp_string);
//— int value output
int digits=(int)SymbolInfoInteger(_Symbol,SYMBOL_DIGITS);
temp_string=StringFormat(” SYMBOL_DIGITS = %d (number of digits after the decimal point)\r\n”,
digits);
StringAdd(output_string,temp_string);
//— double value output with variable number of digits after the decimal point
double point_value=SymbolInfoDouble(_Symbol,SYMBOL_POINT);
format_string=StringFormat(” SYMBOL_POINT = %%.%df (point value)\r\n”,
digits);
temp_string=StringFormat(format_string,point_value);
StringAdd(output_string,temp_string);
//— int value output
int spread=(int)SymbolInfoInteger(_Symbol,SYMBOL_SPREAD);
temp_string=StringFormat(” SYMBOL_SPREAD = %d (current spread in points)\r\n”,
spread);
StringAdd(output_string,temp_string);
//— int value output
int min_stop=(int)SymbolInfoInteger(_Symbol,SYMBOL_TRADE_STOPS_LEVEL);
temp_string=StringFormat(” SYMBOL_TRADE_STOPS_LEVEL = %d (minimal indention in points for Stop orders)\r\n”,
min_stop);
StringAdd(output_string,temp_string);
//— double value output without the fractional part
double contract_size=SymbolInfoDouble(_Symbol,SYMBOL_TRADE_CONTRACT_SIZE);
temp_string=StringFormat(” SYMBOL_TRADE_CONTRACT_SIZE = %.f (contract size)\r\n”,
contract_size);
StringAdd(output_string,temp_string);
//— double value output with default accuracy
double tick_size=SymbolInfoDouble(_Symbol,SYMBOL_TRADE_TICK_SIZE);
temp_string=StringFormat(” SYMBOL_TRADE_TICK_SIZE = %f (minimal price change)\r\n”,
tick_size);
StringAdd(output_string,temp_string);
//— determining the swap calculation mode
int swap_mode=(int)SymbolInfoInteger(_Symbol,SYMBOL_SWAP_MODE);
string str_swap_mode;
switch(swap_mode)
{
case 0: str_swap_mode=“0 (in points)”; break;
case 1: str_swap_mode=“1 (in symbol base currency)”; break;
case 2: str_swap_mode=“2 (by interest)”; break;
case 3: str_swap_mode=“3 (in margin currency)”; break;
}
//— string value output
temp_string=StringFormat(” SYMBOL_SWAP_MODE = %s\r\n”,
str_swap_mode);
StringAdd(output_string,temp_string);
//— double value output with default accuracy
double swap_long=SymbolInfoDouble(_Symbol,SYMBOL_SWAP_LONG);
temp_string=StringFormat(” SYMBOL_SWAP_LONG = %f (buy order swap value)\r\n”,
swap_long);
StringAdd(output_string,temp_string);
//— double value output with default accuracy
double swap_short=SymbolInfoDouble(_Symbol,SYMBOL_SWAP_SHORT);
temp_string=StringFormat(” SYMBOL_SWAP_SHORT = %f (sell order swap value)\r\n”,
swap_short);
StringAdd(output_string,temp_string);
//— determining the trading mode
int trade_mode=(int)SymbolInfoInteger(_Symbol,SYMBOL_TRADE_MODE);
string str_trade_mode;
switch(trade_mode)
{
case SYMBOL_TRADE_MODE_DISABLED: str_trade_mode=“SYMBOL_TRADE_MODE_DISABLED (trade is disabled for the symbol)”; break;
case SYMBOL_TRADE_MODE_LONGONLY: str_trade_mode=“SYMBOL_TRADE_MODE_LONGONLY (only long positions are allowed)”; break;
case SYMBOL_TRADE_MODE_SHORTONLY: str_trade_mode=“SYMBOL_TRADE_MODE_SHORTONLY (only short positions are allowed)”; break;
case SYMBOL_TRADE_MODE_CLOSEONLY: str_trade_mode=“SYMBOL_TRADE_MODE_CLOSEONLY (only position close operations are allowed)”; break;
case SYMBOL_TRADE_MODE_FULL: str_trade_mode=“SYMBOL_TRADE_MODE_FULL (no trade restrictions)”; break;
}
//— string value output
temp_string=StringFormat(” SYMBOL_TRADE_MODE = %s\r\n”,
str_trade_mode);
StringAdd(output_string,temp_string);
//— double value output in a compact format
double volume_min=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MIN);
temp_string=StringFormat(” SYMBOL_VOLUME_MIN = %g (minimal volume for a deal)\r\n”,volume_min);
StringAdd(output_string,temp_string);
//— double value output in a compact format
double volume_step=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_STEP);
temp_string=StringFormat(” SYMBOL_VOLUME_STEP = %g (minimal volume change step)\r\n”,volume_step);
StringAdd(output_string,temp_string);
//— double value output in a compact format
double volume_max=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MAX);
temp_string=StringFormat(” SYMBOL_VOLUME_MAX = %g (maximal volume for a deal)\r\n”,volume_max);
StringAdd(output_string,temp_string);
//— determining the contract price calculation mode
int calc_mode=(int)SymbolInfoInteger(_Symbol,SYMBOL_TRADE_CALC_MODE);
string str_calc_mode;
switch(calc_mode)
{
case 0:str_calc_mode=“0 (Forex)”;break;
case 1:str_calc_mode=“1 (CFD)”;break;
case 2:str_calc_mode=“2 (futures)”;break;
case 3:str_calc_mode=“3 (CFD for indices)”;break;
}
//— string value output
temp_string=StringFormat(” SYMBOL_TRADE_CALC_MODE = %s\r\n”,
str_calc_mode);
StringAdd(output_string,temp_string);
//— double value output with 2 digits after the decimal point
double margin_initial=SymbolInfoDouble(_Symbol,SYMBOL_MARGIN_INITIAL);
temp_string=StringFormat(” SYMBOL_MARGIN_INITIAL = %.2f (initial margin)\r\n”,
margin_initial);
StringAdd(output_string,temp_string);
//— double value output with 2 digits after the decimal point
double margin_maintenance=SymbolInfoDouble(_Symbol,SYMBOL_MARGIN_MAINTENANCE);
temp_string=StringFormat(” SYMBOL_MARGIN_MAINTENANCE = %.2f (maintenance margin)\r\n”,
margin_maintenance);
StringAdd(output_string,temp_string);
//— int value output
int freeze_level=(int)SymbolInfoInteger(_Symbol,SYMBOL_TRADE_FREEZE_LEVEL);
temp_string=StringFormat(” SYMBOL_TRADE_FREEZE_LEVEL = %d (order freeze level in points)”,
freeze_level);
StringAdd(output_string,temp_string);
Print(output_string);
Comment(output_string);
/* execution result
Contract specification for EURJPY:
SYMBOL_DIGITS = 3 (number of digits after the decimal point)
SYMBOL_POINT = 0.001 (point value)
SYMBOL_SPREAD = 23 (current spread in points)
SYMBOL_TRADE_STOPS_LEVEL = 100 (minimal indention in points for Stop orders)
SYMBOL_TRADE_CONTRACT_SIZE = 100000 (contract size)
SYMBOL_TRADE_TICK_SIZE = 0.001000 (minimal price change)
SYMBOL_SWAP_MODE = 0 (in points)
SYMBOL_SWAP_LONG = -1.600000 (buy order swap value)
SYMBOL_SWAP_SHORT = -1.100000 (sell order swap value)
SYMBOL_TRADE_MODE = SYMBOL_TRADE_MODE_FULL (no trade restrictions)
SYMBOL_VOLUME_MIN = 0.01 (minimal volume for a deal)
SYMBOL_VOLUME_STEP = 0.01 (minimal volume change step)
SYMBOL_VOLUME_MAX = 1000 (maximal volume for a deal)
SYMBOL_TRADE_CALC_MODE = 0 (Forex)
SYMBOL_MARGIN_INITIAL = 0.00 (initial margin)
SYMBOL_MARGIN_MAINTENANCE = 0.00 (maintenance margin)
SYMBOL_TRADE_FREEZE_LEVEL = 20 (order freeze level in points)
*/
} |