Checks whether the key status is the same as that on the keyboard.

integer AIT_VerifyKeyState  (
  integer nVirtualKey,     // Virtual key
  integer nKeyState        // Key status
);

nVirtualKey (input)

Specify a virtual key having key status to be checked.

You have to set one of the following values.

Value	Description
NUMLOCK	Num Lock key
SCROLLLOCK	Scroll Lock key
CAPSLOCK	Caps Lock key

nKeyState (input)

Specify key status to be checked, which is on or off. You have to set one of the following values.

Value	Description
KEYSTATE_OFF	Specify this value to check whether the key is off.
KEYSTATE_ON	Specify this value to check whether the key is on.

The return value is 1 if the key status matches specified status, 0 if not, and -1 if the function has not been processed successfully. If -1 has been returned, you can use AIT_GetLastError to acquire an extended error code. The following gives the error codes that AIT_GetLastError may return.

Extended error number	Error code
8	ERROR_NOT_ENOUGH_MEMORY
14	ERROR_OUTOFMEMORY
87	ERROR_INVALID_PARAMETER
112	ERROR_DISK_FULL
1400	ERROR_INVALID_WINDOW_HANDLE
1460	ERROR_TIMEOUT