This is the legacy 4D documentation web site. Documentations are progressively being moved to developer.4d.com
- 4D Language Reference
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- List of constant themes
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4D Environment
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4D Write Pro
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ASCII Codes
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Backup and Restore
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BLOB
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Cache Management
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Colors
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Communications
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Compression
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Data File Maintenance
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Database Engine
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Database Events
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Database Parameters
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DataStore Request Log
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Date Display Formats
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Days and Months
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Design Object Access
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Dictionaries
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Digest Type
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Error Handler
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Euro Currencies
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Events (Modifiers)
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Events (What)
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Expressions
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Field and Variable Types
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File and Folder
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Find Window
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Font Styles
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Font Type List
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Form Area
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Form Events
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Form Object Types
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Form Objects (Access)
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Form Objects (Properties)
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Form Parameters
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Formulas
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Function Keys
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Graph Parameters
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Hierarchical Lists
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HTTP Client
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Index Type
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Is License Available
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ISO Latin Character Entities
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LDAP
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List Box
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Listbox Footer Calculation
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Log Events
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Mail
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Math
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Menu Item Properties
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Multistyle Text
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Multistyle Text Attributes
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Objects and collections
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Open Form Window
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Open Window
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Pasteboard
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PHP
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Picture Compression
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Picture Display Formats
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Picture Metadata Names
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Picture Metadata Values
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Picture Transformation
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Platform Interface
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Platform Properties
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Print Options
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Process State
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Process Type
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QR Area Properties
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QR Borders
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QR Commands
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QR Document Properties
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QR Operators
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QR Output Destination
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QR Report Types
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QR Rows for Properties
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QR Text Properties
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Queries
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Relations
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Resources Properties
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SCREEN DEPTH
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SET RGB COLORS
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Shortcut and Associated Keys
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SQL
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Standard Action
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Standard System Signatures
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Strings
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System Documents
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System Folder
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System Format
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TCP Port Numbers
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Time Display Formats
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Trigger Events
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Value for Associated Standard Action
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Web Area
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Web Server
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Web Services (Client)
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Web Services (Server)
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Windows
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XML
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Date Display Formats
| Constant | Type | Value | Comment |
| Blank if null date | Longint | 100 | To be added to the format constant. Indicates that in the case of a null value, 4D must return an empty string instead of zeros |
| Date RFC 1123 | Longint | 10 | Fri, 10 Sep 2010 13:07:20 GMT (see Notes) |
| Internal date abbreviated | Longint | 6 | Dec 29, 2006 |
| Internal date long | Longint | 5 | December 29, 2006 |
| Internal date short | Longint | 7 | 12/29/2006 |
| Internal date short special | Longint | 4 | 12/29/06 (but 12/29/1896 or 12/29/2096) |
| ISO Date | Longint | 8 | 2006-12-29T00:00:00 (see Notes) |
| ISO Date GMT | Longint | 9 | 2010-09-13T16:11:53Z (see Notes) |
| System date abbreviated | Longint | 2 | Sun, Dec 29, 2006 |
| System date long | Longint | 3 | Sunday, December 29, 2006 |
| System date short | Longint | 1 | 12/29/2006 |
Product: 4D
Theme: List of constant themes
4D Language Reference ( 4D v20)
4D Language Reference ( 4D v20.1)
4D Language Reference ( 4D v20.2)
4D Language Reference ( 4D v20.3)
4D Language Reference ( 4D v20.4)
4D Language Reference ( 4D v20.5)
4D Language Reference ( 4D v20.6)
