Function KbdStat() Foundation
Determines the state of special keys like Shift, Ctrl or Alt
KbdStat() --> nKeyStateThe function returns always 0 under Windows 95.
The insert key is not supported under Windows NT. Scroll-Lock, Caps-Lock and Num-Lock are only detected when the corresponding keyboard mode is enabled.
The function returns a numeric value that indicates which special key is pressed at a time. #define constants to identify a key are found in XBTKBD.CH. If multiple keys are pressed at the same time the return value is a sum of these constants:
| Constant | Description |
|---|---|
| KST_RIGHTSHIFT | Right Shift key pressed |
| KST_LEFTSHIFT | Left Shift key pressed |
| KST_CTRL | Either Ctrl key pressed |
| KST_ALT | Either Alt key pressed |
| KST_SCROLLOCK | Scroll lock active |
| KST_NUMLOCK | Num lock active |
| KST_CAPSLOCK | Caps lock active |
| KST_INSERT | Insert mode active |
| KST_LEFTCTRL | Left Ctrl key pressed |
| KST_LEFTALT | Left Alt key pressed |
| KST_RIGHTCTRL | Right Ctrl key pressed |
| KST_RIGHTALT | Right Alt key pressed |
| KST_SCROLL | Scroll lock pressed |
| KST_NUM | Num lock pressed |
| KST_CAPS | Caps lock pressed |
| KST_SYSRQ | SysRequest pressed |
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