Expert Advisor Programming by Andrew R. Young

EXPERT ADVISOR PROGRAMMING
Chapter 8
Tips and Tricks
In this chapter, we will cover additional features that may be useful in your expert advisors.
Escape Characters
If you want to add quotes or a backslash character to a string constant, you'll need to escape the
character using a backslash (\). For example, if you need to insert a double quote, the escape
character will be \". For a single quote, the escape character is \'. For a backslash, use two
backslashes as the escape character: \\
string EscQuotes = "This string has \"escaped double quotes\"";
// Output: This string has "escaped double quotes"
string EscQuote = "This string has \'escaped single quotes\'";
// Output: This string has 'escaped single quotes'
string EscSlash = "This string has an escaped backslash \\";
// Output: This string has an escaped backslash \
If you need a string to span multiple lines, use the escape character \n to add a newline:
string NewLine = "This string has \n a newline";
// Output: This string has
a newline
Using Chart Comments
You can print text in the top left hand corner of the chart using the Comment() function. This can be
used to print status information, indicator settings or any other information you may find useful.
One method for displaying chart comments is to declare several string variables and concatenate
them together with newline characters. One string can be used to display settings, another to display
information messages or order status, etc. The concatenated string will be passed to the Comment()
function. Place the Comment() function at the end of the start() function to update the chart
comment:
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