This is the legacy 4D documentation web site. Documentations are progressively being moved to developer.4d.com
- 4D Language Reference
-
- Introduction
- Language Definition
- Debugging
- 4D Environment
- Arrays
- Backup
- BLOB
- Boolean
- Cache Management
- Collections
- Communications
- Compiler
- Data Entry
- Data Security
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- Date and Time
- Design Object Access
- Drag and Drop
- Entry Control
- File and Folder
- Form Events
- Forms
- Formulas
- Graphs
- Hierarchical Lists
- HTTP
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- Interruptions
- JSON
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- Math
- Menus
- Messages
- Named Selections
- Objects (Forms)
- Objects (Language)
- On a Series
- Operators
- ORDA - DataClass
- ORDA - DataClassAttribute
- ORDA - DataStore
- ORDA - Entity
- ORDA - EntitySelection
- Pasteboard
- PHP
- Pictures
- Printing
- Process (Communications)
- Process (User Interface)
- Processes
- Queries
- Quick Report
- Record Locking
- Records
- Relations
- Resources
- Secured Protocol
- Selection
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- Spell Checker
- SQL
- String
- Structure Access
- Styled Text
- Subrecords
- SVG
- System Documents
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- Variables
- Web Area
- Web Server
- Web Services (Client)
- Web Services (Server)
- Windows
- XML
- XML DOM
- XML SAX
- List of constant themes
- Error Codes
- Character Codes
- Deprecated Commands
Compiler
Deprecated section
Compiler directives are deprecated as of 4D 20 R7. In the direct typing mode (recommended mode), variable and parameter declarations are made only using keywords (var and #DECLARE) and function prototypes. All elements must be declared, the compiler does not have to deduce types.
For updated documentation regarding compilation, please refer to developer.4d.com.
_o_C_GRAPH
_o_C_INTEGER
_o_C_STRING
BUILD APPLICATION
C_BLOB
C_BOOLEEN
C_DATE
C_LONGINT
C_PICTURE
C_POINTER
C_REAL
C_TEXT
C_TIME
ON EVENT CALL
System Variables
Product: 4D
Theme: Compiler
4D Language Reference ( 4D v20 R7)
