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Limitations of WINDEV, WEBDEV and WINDEV Mobile
The limitations presented in this document affect: - the project.
- windows.
- controls.
- menus (drop-down or context menu).
- events.
- image formats.
- analyses, data file descriptions, items.
- physical HFSQL data files.
- physical xBase data files.
- WINDEV libraries (WDL).
- WINDEV executables.
- the setup program.
| | | | Limitations of 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, ...) | | 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 |
| | | | Limitations of 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 | This limit varies depending on the available memory and to the number of controls 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 |
| | | | Limitations of 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 through 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 control: Maximum number of options | 256 options | | List Box or Combo Box control: Maximum number of elements | 5 millions elements | | Table control populated programmatically: Maximum number of lines | 5 millions lines
Change according to the available memory. | | Table control (populated programmatically or based on a data file): Maximum number of columns | 1 million columns | | Table control (populated programmatically or based on a data file): Maximum number of cells | Dozens of millions of cells | | Table control (populated programmatically or based on a data file): Maximum number of characters in a row | 2 billion (2 GB) characters maximum per row (for all the columns) | | Column in a Table control (populated programmatically or based on a data file): Maximum width | 32,000 pixels | | Text column of a Table control (populated programmatically or based on a data file): Maximum number of characters | 2 billion (2 GB) characters | | TreeView control: Maximum number of elements | No limitations |
| | | | Limitations of 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 |
| | | | Limitations 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 (#STAR#.BMP)
- Graphics Interchange Format (#STAR#.gif)
- Joint Picture Experts Group (#STAR#.jpg ; #STAR#.jpeg)
- Kodak Photo CD (#STAR#.pcd)
- PaintBrush (#STAR#.pcx)
- Adobe Photoshop Format (#STAR#.psd)
- TrueVision TARGA (#STAR#.tga)
- Tagged Image File Format (#STAR#.tif ; #STAR#.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 (#STAR#.png)
- Windows MetaFiles (#STAR#.emf ; #STAR#.wmf)
- Icons (#STAR#.ico ; #STAR#.icw)
Remarks: - HQ display (High Quality) available.
- Management of sheets in transparent BMP format (32 bits).
- Cursors (#STAR#.cur)
- Portable Document Format (#STAR#.pdf)
- Scalable Vector Graphics (#STAR#.svg)
- WINDEV images (generated by the image editor, #STAR#.WDPIC).
Remarks: - BMP, ICO, CUR and OS2 images used in windows are automatically handled by wd280obj.dll.
In all other cases, wd280pnt.dll must be installed with the other WINDEV DLLs. - The PDFs displayed in the Image fields are managed by wd28 0pnt.dll
| | | | Limitations of the analyses, file descriptions and 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 | | Record | Maximum size | 2 GB | | Record | Minimum size | 16 bytes |
| | | | Limitations of the physical data files, index files and memo files in HFSQL format |
|---|
Maximum size of:- Data file (#STAR#.FIC)
- Transaction file (#STAR#.FIC)
- Log file (#STAR#JNL.FIC)
| 1024 TB | | Index file (#STAR#.NDX): Maximum size | 1024 TB | | Memo file (#STAR#.MMO): Maximum size | 1024 TB | | Files opened simultaneously: Maximum number | Unlimited | | 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 |
| | | | Limitations of xBase files |
|---|
| Record | Maximum number per data file | Unlimited | | Record | Maximum size | - Clipper5 file: 8,192 bytes
- Other: 4,000 bytes
| | Record | Maximum number per index file | Unlimited | | Record | 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. |
| | | | Limitations of the libraries |
|---|
| Maximum size of library file (".WDL" file) | Available size on disk (or up to 2 GB) | | Maximum number of elements | Unlimited |
| | | | Limitations of the executables |
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| Maximum size of executable program ( ".EXE" file) | Available size on disk (or up to 2 GB) |
| | | | Limitations of the setup program | | Supported languages | Maximum number | 20 languages | | Components | Maximum number | 500 components | | File groups | Maximum number | 500 groups of files | | Update | 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 | #STAR# Reminder: The setup program of a WINDEV application can be created by:- the setup program creation wizard: on the "Project" tab, in the "Generation" group, click "Setup procedure".
- the setup editor (WDInst): on the "Tools" tab, in the "Utilities" group, click "WDInst".
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