161202 18:30:39 InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!
161202 18:30:39 InnoDB: The InnoDB memory heap is disabled
161202 18:30:39 InnoDB: Mutexes and rw_locks use Windows interlocked functions
161202 18:30:39 InnoDB: Compressed tables use zlib 1.2.3
161202 18:30:39 InnoDB: Initializing buffer pool, size = 128.0M
161202 18:30:39 InnoDB: Completed initialization of buffer pool
161202 18:30:39 InnoDB: highest supported file format is Barracuda.
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
161202 18:30:39  InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
161202 18:30:40  InnoDB: Waiting for the background threads to start

    MYSQL *mysql;
    mysql_library_init(0, NULL, NULL);
    mysql = mysql_init(NULL);

    mysql_options(mysql, MYSQL_READ_DEFAULT_FILE,   "my.ini");
    mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP,  "mysqld");
    mysql_options(mysql, MYSQL_OPT_USE_EMBEDDED_CONNECTION, NULL);

    mysql_real_connect(mysql, NULL,NULL,NULL, "database1", 0, NULL, 0 );

[client]
port=4406

[mysql]
default-character-set=utf8

[mysqld]
port=4406

basedir="C:/mysql/sql/"
datadir="C:/mysql/sql/data/"

character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake

default-storage-engine=INNODB
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
max_connections=100
query_cache_size=0
table_cache=256
tmp_table_size=18M
thread_cache_size=8
myisam_max_sort_file_size=100G
myisam_sort_buffer_size=35M
key_buffer_size=8M
read_buffer_size=64K
read_rnd_buffer_size=256K
sort_buffer_size=256K
innodb_additional_mem_pool_size=2M
innodb_flush_log_at_trx_commit=1
innodb_log_buffer_size=1M
innodb_buffer_pool_size=92M
innodb_log_file_size=46M
innodb_thread_concurrency=8

MYSQL       *mysql;

static char *server_options[]= { "mysql_test", "--defaults-file=my.ini", NULL };
int             num_elements = (sizeof(server_options) / sizeof(char *)) - 1;
static char *server_groups[] = { "client", "mysqld" "mysql", NULL };

int main(void)
{
//....

    mysql_library_init(num_elements, server_options, server_groups);
    mysql = mysql_init(NULL);
    
    mysql_options(mysql, MYSQL_READ_DEFAULT_GROUP,  "client");
    mysql_options(mysql, MYSQL_OPT_USE_EMBEDDED_CONNECTION, NULL);

    if (mysql != mysql_real_connect( mysql, NULL,NULL,NULL, "mysql", 0, NULL, 0 )){
        qDebug() << "Warning! mysql_real_connect faulted!";
        return;
    }

//...

    if (!mysql) return;

    mysql_close(mysql);
    mysql_library_end();

}