c++ - "incomplete type is not allowed"错误是什么意思？

Question

我正尝试在 C++ 中声明一个回调例程，如下所示:

void register_rename (int (*function) (const char *current, const char *new));
    /*------------------------------------------------------------*/
    /* WHEN:  The callback is called once each time a file is received and
     *   accepted.   (Renames the temporary file to its permanent name)
     * WHAT:  Renames a file from the given current name to the specified new name.
     */

但是，我收到以下错误:

line 204: error #70: 
      incomplete type is not allowed
void register_rename (int (*function) (const char *current, const char *new));

我不确定如何纠正这个问题。我在同一个头文件中声明了其他类似的回调例程，但我没有收到此错误。

求助! :)

Answer 1

您不能使用 new，因为它是关键字。尝试为您的第二个参数选择一个有效的标识符。