Checks whether the specified registry key exists.

integer AIT_RegKeyExists(
  integer nHKeyHandle,       // Key handle
  string strRegKeyName       // Registry sub-key name
);

nHKeyHandle (input)

Specify a handle to an already opened registry key.

strRegKeyName (input)

Specify the name of a registry sub-key to check if it exists.

The return value is 1 if the key exists, 0 if not, and -1 if the function has not been processed successfully.

If the function has returned -1, 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
2	ERROR_FILE_NOT_FOUND
6	ERROR_INVALID_HANDLE
87	ERROR_INVALID_PARAMETER
1009	ERROR_BADDB
1010	ERROR_BADKEY
1011	ERROR_CANTOPEN
1015	ERROR_REGISTRY_CORRUPT
1016	ERROR_REGISTRY_IO_FAILED
1019	ERROR_NO_LOG_SPACE