| CRT Documentation: Reference |
[This function does not have a corresponding DOS function.]
Returns the status of the Control keys.
function GetControlKeyState: longword;
This function returns a bit-mask of the control key state of the last ReadKey call.
| Value | Meaning |
|---|---|
| RIGHT_ALT_PRESSED | Right Alt key was pressed. |
| LEFT_ALT_PRESSED | Left Alt key was pressed. |
| ALT_PRESSED | One of the Alt keys was pressed. |
| RIGHT_CTRL_PRESSED | Right Ctrl key was pressed. |
| LEFT_CTRL_PRESSED | Left Ctrl key was pressed. |
| CTRL_PRESSED | One of the Ctrl keys was pressed. |
| SHIFT_PRESSED | One of the Shift keys was pressed. |
| NUMLOCK_ON | The NumLock light was on. |
| SCROLLLOCK_ON | The ScrollLock light was on. |
| CAPSLOCK_ON | The CapsLock light was on. |
| ENHANCED_KEY | The key was enhanced. |
This function uses the last state as retrieved with the last ReadKey call, it does not check the current status. This makes it easier to trap specific key combinations since you can reliably check whether a specific key combination was made. This function returns the value of the dwControlKeyState for the INPUT_RECORD returned via the Win32 API. Any changes made in this functionality will be reflected with this function.
Crt Overview, ReadKey