............................................................................... 190

    8.2.3 定位cāo作........................................................................................................... 192

    8.2.4 关闭cāo作........................................................................................................... 194

    8.2.5 异常cāo作........................................................................................................... 195

    8.2.6 管理cāo作........................................................................................................... 197

    8.3 文件对话框.................................................................................................................. 203

    8.3.1 多选文件对话框............................................................................................... 203

    8.3.2 重载文件对话框............................................................................................... 204

    8.4 本章小结...................................................................................................................... 206

    第9 章 多线程........................................................................................................................... 207

    9.1 多线程的基本概念...................................................................................................... 207

    9.2 两种重要的线程............................................................................................