MQL4 String Type

Overview

  • Stores text strings as sequences of Unicode characters with a null terminator.
  • Supports assignment of string constants.
  • String Constants

  • Enclosed in double quotes (e.g., "This is a string constant").
  • To include a double quote within a string, precede it with a backslash (e.g., "He said \"Hello\"").
  • Special character constants (e.g., newline \n, tab \t) can be used when prefixed with a backslash.
  • Long constant strings can be split into multiple parts without an addition operator; they are concatenated during compilation.
  • Internal Representation

  • A structure named MqlString of 12 bytes.
  • size: 32-bit integer indicating the allocated buffer size.
  • buffer: 32-bit address pointing to the character buffer.
  • reserved: 32-bit integer, reserved.
  • Related Functions

  • Conversion Functions
  • String Functions
  • FileOpen()
  • FileReadString()
  • FileWriteString()