This is the legacy 4D documentation web site. Documentations are progressively being moved to developer.4d.com
- 4D Language Reference
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- Character Codes
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Unicode Codes
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Function Key Codes
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Function Key Codes
4D returns values for Function keys in the KeyCode system variable, which is used within project methods installed by the ON EVENT CALL command. These project methods are used to catch events.
The values for Function keys are not based on ASCII Codes. They are:
| Function key | KeyCode |
| F1 | -122 |
| F2 | -120 |
| F3 | -99 |
| F4 | -118 |
| F5 | -96 |
| F6 | -97 |
| F7 | -98 |
| F8 | -100 |
| F9 | -101 |
| F10 | -109 |
| F11 | -103 |
| F12 | -111 |
| F13 | -105 |
| F14 | -107 |
| F15 | -113 |
Reminder
The KeyCode system variable is to be used in a project method installed using ON EVENT CALL.
In addition to the function keys, the following table lists the values returned in KeyCode when you press one of the common keys, such as Return or Enter.
| Key | Code |
| Enter | 3 |
| Return | 13 |
| Backspace | 8 |
| Tab | 9 |
| Escape | 27 |
| Del | 127 |
| Help | 5 |
| Home | 1 |
| End | 4 |
| Page Up | 11 |
| Page Down | 12 |
| Left Arrow | 28 |
| Right Arrow | 29 |
| Up Arrow | 30 |
| Down Arrow | 31 |
Product: 4D
Theme: Character Codes
4D Language Reference ( 4D v20 R7)
