#mql4 programming

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MQL4 Programming - Table of Contents

MQL4 Programming – Table of Contents

  Table of Contents

Preface

Introduction to MQL4

Basics of MQL4

Some Basic Concepts

Constants and Variables

Data Types

Operations and Expressions

Operators

Functions

Program Types

MetaEditor

File System

Creating and Using Programs

Program in MQL4

Program Structure

Special Functions

Program Execution

Examples of Implementation

Operators

Assignment Operator

Conditional Operator ‘if-else’

Cycle…

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MQL4 Programming - Appendixes - List of Programs

MQL4 Programming – Appendixes – List of Programs

  List of Programs

Expert Advisors:

Name Description with the link to the section create.mq4 Example of a commented programming code simple.mq4 Example of a simple EA, execution of special functions possible.mq4 Example of a correct program structure incorrect.mq4 Example of an incorrect program structure userfunction.mq4 Simple example of a user-defined function applicaton oneleve…

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MQL4 Programming - Appendixes - MarketInfo() Identifiers

MQL4 Programming – Appendixes – MarketInfo() Identifiers

  MarketInfo() Identifiers

Query identifiers used in the MarketInfo() function can have the following values:

Constant Value Description MODE_LOW 1 Minimum day price MODE_HIGH 2 Maximum day price MODE_TIME 5 The last incoming tick time. MODE_BID 9 Last incoming bid price. For the current symbol, it is stored in the predefined variable Bid. MODE_ASK 10 Last incoming ask price. For the…

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MQL4 Programming - Appendixes - MessageBox() Return Codes

MQL4 Programming – Appendixes – MessageBox() Return Codes

  MessageBox() Return Codes

If a message box has a Cancel button, the function returns the IDCANCEL value if either the ESC key is pressed or the Cancel button is selected. If a message box has no Cancel button, pressing ESC has no effect.

Constant Value Description IDOK 1 OK button was selected. IDCANCEL 2 Cancel button was selected IDABORT 3 Abort button was selected IDRETRY 4 Retry button was…

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MQL4 Programming - Appendixes - Sound Files

MQL4 Programming – Appendixes – Sound Files

  Sound Files

The set of the wav files recommended for using in the practical work in EAs, indicators and scripts:

File Name Recommended Terms of Use Close_order.wav Market order closing Ok.wav Successful ending of a trade operation Transform.wav Transforming a pending order into a market order Bulk.wav Insignificant events Inform.wavDifferent information (trade criterion…

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MQL4 Programming - Appendixes - Types and Properties of Graphical Objects

MQL4 Programming – Appendixes – Types and Properties of Graphical Objects

  Types and Properties of Graphical Objects

Graphical object type identifiers used with ObjectCreate(), ObjectsDeleteAll() and ObjectType() functions. It can be any of the following values:

Object Type Value Description OBJ_VLINE 0 Vertical line. Uses time part of first coordinate, price is ignored. OBJ_HLINE 1 Horizontal line. Uses price part of first coordinate, time is ignored. OBJ_TREND 2…

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MQL4 Programming - Appendixes - Styles of Indicator Lines

MQL4 Programming – Appendixes – Styles of Indicator Lines

  Styles of Indicator Lines

Styles of drawing indicator lines for SetIndexStyle() and SetLevelStyle() functions:

Constant Value Description DRAW_LINE 0 Simple line DRAW_SECTION 1 Sections between nonempty line values DRAW_HISTOGRAM 2 Histogram DRAW_ARROW 3 Arrows (symbols) DRAW_ZIGZAG 4 Drawing sections between even and odd indicator buffers DRAW_NONE 12 No drawing mql4 programming book, expert…

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