HKCU\Control Panel\Keyboard
| Data type | Range | Default value |
|---|---|---|
| REG_SZ | 0-3 | 1 |
Determines how long after a key is pressed and held down that the key begins to repeat the character. The values 0 (shortest delay; approximately 250 milliseconds) and 3 (longest delay; approximately 1 second) correspond to the four increments on the Repeat delay scale in Keyboard in Control Panel.
To change the value of this entry, use the Keyboard Properties box. Repeat delay is in the Character repeat box on the Speed tab.