如何使用SQLConnect或SQLDriverConnect

我试过,但失败了:

"DRIVER=SQL Server;SERVER=SERVER_IP;DATABASE=sales"

服务器IP类似于111.111.111.1119999

我听从了约翰的建议,以下是我目前的代码:

SQLCHAR OutConnStr[255];
SQLSMALLINT OutConnStrLen;
SQLTCHAR *srv = (SQLTCHAR *)"Provider=SQLOLEDB.1;Password=pw;Persist Security Info=True;User ID=me;Initial Catalog=mydb;Data Source=1.2.3.4,9999";
rc = SQLDriverConnect(conn_h, NULL, srv, strlen((char*)srv), OutConnStr, 255, &OutConnStrLen, SQL_DRIVER_PROMPT);