调用 DBTools 函数

所有工具都是通过先填写结构然后调用 DBTools 库中的函数（或入口点）来运行的。每个入口点都将指向单个结构的指针视为参数。

下面的示例展示了如何在 Windows 操作系统上使用 DBBackup 函数。

// Initialize the structure
a_backup_db backup_info;
memset( &backup_info, 0, sizeof( backup_info ) );

// Fill out the structure
backup_info.version = DB_TOOLS_VERSION_NUMBER;
backup_info.output_dir = "c:\\backup";
backup_info.connectparms ="UID=DBA;PWD=sql;DBF=demo.db";

backup_info.confirmrtn = (MSG_CALLBACK) ConfirmRtn ;
backup_info.errorrtn = (MSG_CALLBACK) ErrorRtn ;
backup_info.msgrtn = (MSG_CALLBACK) MessageRtn ;
backup_info.statusrtn = (MSG_CALLBACK) StatusRtn ;
backup_info.backup_database = TRUE;

// start the backup
DBBackup( &backup_info );

有关 DBTools 结构成员的信息，请参见DBTools 结构。