The limits of WINDEV

WINDEV, WEBDEV AND WINDEV MOBILE
ONLINE HELP

Version:

Home | Sign in | English

Program documentation

Shortcuts

Skin templates and Skins

The guide

The limits of WINDEV

See also

WINDEV tools

The limits of WINDEV

The limits presented in this document affect:

the project.
the windows.
the controls.
the menus (drop-down or popup menu).
the events.
the image formats.
the analyses, the data file descriptions, the items.
the physical data files in HFSQL format.
the physical data files in xBase format.
the WINDEV libraries (WDL).
the WINDEV executables.
the setup program.

Remark: From version 19, HFSQL is the new name of HyperFileSQL.

Limits regarding the project

Windows per project: Maximum number		Unlimited
Project languages: Maximum number		20
Procedures per project: Maximum number		5,000 procedures for each project element (window, report, set of procedures, and so on)
Classes per project: Maximum number		8,000 classes
Variables (global or local) in a project: Maximum number		65,500 variables
Processes of a project: Maximum number of lines		65,500 lines
Elements in a component (windows, sets, variables, classes, members, procedures, etc.): Maximum number		65,500 elements

Limits regarding the windows

Maximum dimensions		32,000 x 32,000 pixels
Maximum number of controls per window		Greater than 5,000. This limit can be less depending on the operating system used.
Logical name of a window: Maximum number of characters		255 characters
Languages selected for a window: Maximum number		64
Windows opened simultaneously at runtime: Maximum number		Limit may vary according to the available memory and to the number of controls found in each window.
Variables (global or local) in a window: Maximum number		65,500 variables
Processes of a window: Maximum number of lines		65,500 lines

Limits regarding the different types of controls

Control: Maximum dimensions		32,000 x 32,000 pixels
Logical name of a control: Maximum number of characters		255 characters
Control process: Maximum number of lines		65,500 lines
	Edit control: Maximum number of characters	2 billion (2 GB) characters
	Multiline edit control: Maximum number of lines	2 billions (2 GB) of lines and 2 billions (2 GB) characters
	Static control: Maximum number of characters	If the static is entered in the editor: 2 billions (2 GB) characters, If the static is assigned by programming: limit depending on the available memory.
	Image control: Maximum dimensions	Unlimited
	Image control: Maximum number of images that can be found in an animated image	Width x Height (in pixels) of the reference image
	Check box or radio button: Maximum number of options	256 options
	List box or combo box: Maximum number of elements	5 millions elements
	Memory table: Maximum number of lines	5 millions lines Change according to the available memory.
	Table (memory or browsing): Maximum number of columns	1 million columns
	Table (memory or browsing): Maximum number of cells	Dozens of millions of cells
	Table (memory or browsing): Maximum number of characters in a row	2 billion (2 GB) characters maximum per row (for all the columns)
	Columns in a table (memory or browsing): Maximum width	32,000 pixels
	Text column in a table (browsing or memory): Maximum number of characters	2 billion (2 GB) characters
	TreeView control: Maximum number of elements	No limit

Limits for the menus

Options and sub-options in a menu: Maximum total number		2 billions (2 GB) of options and sub-options
Levels of options in a menu: Maximum number		2 billions (2 GB) of option levels
Caption of a menu option: Maximum number of characters		2 billion (2 GB) characters
Help message associated with the menu option: Maximum number of characters		2 billion (2 GB) characters
Processes of a menu option: Maximum number of lines		65,500 lines

Limits on events / procedures / classes

Maximum number of lines in: an event linked to an element (project, window, control, etc.) a procedure (local or global)		65,500 lines
Maximum number of languages selected for the code		20
Program line: Maximum number of characters		1,000 characters
Procedure	Maximum number of parameters	255 parameters
Procedure	Name: Maximum number of characters	255 characters
Nested Loop	Maximum number	140 nested loops
Class	Maximum number per project	8,000 classes
Class	Maximum number of members	65,500 members
Class	Name: Maximum number of characters	255 characters
Variable (global or local)	Maximum number in a project	65,500 variables
Variable (global or local)	Maximum number in a window	65,500 variables
Variable (global or local)	Maximum number in a process	65,500 variables
Variable	Name: Maximum number of characters	255 characters
Variable	String type: Maximum number of characters	Limit depending on the available memory
Variable	Fixed string: Maximum number of characters	65,500 characters
Variable	ASCIIZ String type: Maximum number of characters	65,500 characters
Variable	Pascal String type: Maximum number of characters	255 characters
Variable	Array: Maximum number of dimensions	3 dimensions
Variable	Array: Limit for a dimension	Limit depending on the available memory

The following image formats are supported in Windows:

Bitmap (*.BMP)
Graphics Interchange Format (*.gif)
Joint Picture Experts Group (*.jpg ; *.jpeg)
Kodak Photo CD (*.pcd)
PaintBrush (*.pcx)
Adobe Photoshop Format (*.psd)
TrueVision TARGA (*.tga)
Tagged Image File Format (*.tif ; *.tiff)
Remark: the "tiled tiff" option of tiff 6.0 standard is not supported. In this case, we advise you to save the image in tiff 5.0 standard.
Portable Network Graphics (*.png)
Windows MetaFiles (*.emf ; *.wmf)
Icons (*.ico ; *.icw)
Versions 22 and later
Remarks:
- HQ display (High Quality) available.
- Management of sheets in transparent BMP format (32 bits).
New in version 22
Remarks:
- HQ display (High Quality) available.
- Management of sheets in transparent BMP format (32 bits).
Remarks:
- HQ display (High Quality) available.
- Management of sheets in transparent BMP format (32 bits).
Cursors (*.cur)
Portable Document Format (*.pdf)
Versions 15 and later
Scalable Vector Graphics (*.svg)
New in version 15
Scalable Vector Graphics (*.svg)
Scalable Vector Graphics (*.svg)
Versions 22 and later
WINDEV images (generated by the image editor, *.WDPIC).
New in version 22
WINDEV images (generated by the image editor, *.WDPIC).
WINDEV images (generated by the image editor, *.WDPIC).

Remarks:

The images in BMP, ICO, CUR and OS2 formats used in the windows are automatically managed by wdxxxobj.dll.
In the other cases, wdxxxpnt.dll must be installed with the other WINDEV DLLs.
The PDFs displayed in the Image controls are managed by wdxxxpnt.dll

Limits regarding the analyses, the file descriptions and the items

Analysis	Maximum size of ".WDD" file	Unlimited
Analysis	Maximum number of file descriptions	65,535 files
Analysis	Maximum number of items	65,535 items
Analysis	Maximum number of links	65,535 links
Analysis	Maximum number of analysis generations	2³¹ (over 2 milliards) of generations
File description	Logical name: Maximum number of characters	255 characters
File description	Maximum number per analysis	65,535 files
File description	Maximum number of items	65,535 items
File description	Maximum number of links per file	65,535 links
File description	Maximum number of keys	65,353 keys
File description	Maximum size of all the keys	2 GB
Item	Logical name: Maximum number of characters	255 characters
Item	Maximum number per analysis	65,535 items
Item	Maximum number per file	65,535 items
Item	Maximum number in a composite key	65,535 items
Item	Maximum size	65,535 bytes (except 255 bytes for the files in Windows Turbo Pascal in the language format)
Item	Maximum size of a memo item (text or binary)	4 GB
Item	Maximum size of a binary string	65,533 bytes
Item	Maximum number of elements in an array of items	255 elements
Key	Maximum number per file description	65,353 keys
Key	Maximum size of all the keys found in a file	2 GB
Key	Maximum size of a key (composite or simple)	65,535 bytes
Key	Maximum number of items in a composite key	65,535 items
Backup	Maximum size	2 GB
Backup	Minimum Size	16 bytes

Limits regarding the physical data files, index files and memo files in HFSQL format

Maximum size of: Data file (.FIC) Transaction file (.FIC) Log file (*JNL.FIC)		If the operating system supports NTFS and if the partition supports NTFS: 1024 TB Otherwise: 2 GB.
Index file (*.NDX): Maximum size		If the operating system supports NTFS and if the partition supports NTFS: 1024 TB Otherwise: 2 GB.
Memo file (*.MMO): Maximum size		If the operating system supports NTFS and if the partition supports NTFS: 1024 TB Otherwise: 4 GB.
Files opened simultaneously: Maximum number		Unlimited Versions 17 and later The maximum number of files that can be simultaneously opened by an iPhone/iPad application cannot exceed 256. Therefore, up to 80 HFSQL files can be opened simultaneously (one ".fic" file, one ".ndx" file and one ".mmo" file for each HFSQL data file). New in version 17 The maximum number of files that can be simultaneously opened by an iPhone/iPad application cannot exceed 256. Therefore, up to 80 HFSQL files can be opened simultaneously (one ".fic" file, one ".ndx" file and one ".mmo" file for each HFSQL data file). The maximum number of files that can be simultaneously opened by an iPhone/iPad application cannot exceed 256. Therefore, up to 80 HFSQL files can be opened simultaneously (one ".fic" file, one ".ndx" file and one ".mmo" file for each HFSQL data file).
Locked items per file: Maximum number		Unlimited
Items per file: Maximum number		Depends on the size of a record (for a 20-byte record: 329 millions of billions of records, for a 4,096-byte record: 2 millions of billions of records)
File password: Maximum number of characters		Unlimited
.REP file: Maximum number of characters for the full name of the physical file		255 characters
.REP file: Maximum number of characters for the logical name of the file		255 characters

Limits for xBase files

Backup	Maximum number per data file	Unlimited
Backup	Maximum size	Clipper5 file: 8,192 bytes Other: 4,000 bytes
Backup	Maximum number per index file	Unlimited
Backup	Maximum number per memo file	Unlimited
Item	Maximum number per file	dBase 4 file: 255 items DBX file: 512 items Clipper5 file: 1,023 items Other: 128 items
Item	Maximum size of a text item	Clipper5 file: 2,048 bytes Other: 254 bytes
Item	Maximum size of a numeric item	dBase 4 file: 20 bytes FoxPro file: 20 bytes Other: 19 bytes
Item	Maximum size of decimal numeric item	dBase 4 file: 18 bytes FoxPro file: 18 bytes Other: 15 bytes
Item	Name: Maximum number of characters	10 characters
Key	Maximum size	65,535 bytes
Key	Name: Maximum number of characters	10 characters
Key expression	Maximum size	100 bytes
Key expression	Authorized functions	DTOC, DTOS, Left, Right, Upper, Lower, STR, SUBSTR
Index	Maximum number in an MDX file	47 indexes
Text Memo	Maximum number of characters written	24,576 characters.

Limits regarding the libraries

Maximum size of library file (".WDL" file)		Available size on disk (or up to 2 GB)
Maximum number of elements		Unlimited

Limits regarding the executables

Maximum size of executable program ( ".EXE" file)		Available size on disk (or up to 2 GB)


Limits regarding the setup program
Supported languages	Maximum number	20 languages
Components	Maximum number	500 components
File groups	Maximum number	500 groups of files
Upgrade	Maximum number of analyses that can be taken into account by a single update	100 analyses Each update can automatically modify the data files belonging to 100 different analyses.
DLL	Maximum number of DLLs associated with a custom setup program	500 DLLs
* Reminder: The setup program of a WINDEV application can be created by: the setup program creation wizard: on the "Project" pane, in the "Generation" group, click "Setup procedure". the setup editor (WDInst): on the "Tools" pane, in the "Utilities" group, click "WDInst".