函数参数“未在此范围内声明”。参数在h文件中可见

Question

以下是供参考的代码 http://pastebin.com/nr7wuxNA

我正在用mongo的C ++驱动程序测试一些调用

除非我添加此行

，否则它有效

obj.appendBinData( "binTest",sizeof(test), BinDataGeneral, test);

以下是错误消息

ninexample.cpp: In function ‘int main(int, const char**)’:
ninexample.cpp:73:48: error: ‘BinDataGeneral’ was not declared in this scope
     obj.appendBinData( "binTest",sizeof(test), BinDataGeneral, test);
                                                ^
ninexample.cpp:73:48: note: suggested alternative:
In file included from /usr/include/mongo/db/jsobj.h:34:0,
                 from /usr/include/mongo/client/dbclientinterface.h:25,
                 from /usr/include/mongo/client/connpool.h:23,
                 from /usr/include/mongo/client/dbclient.h:32,
                 from ninexample.cpp:22:
/usr/include/mongo/bson/bsontypes.h:102:9: note:   ‘BinDataGeneral’
         BinDataGeneral=0,
         ^

我对C ++很陌生，所以我不确定为什么会出现错误，因为它似乎在h文件中看到了BinDataGeneral类型。

有人可以为我澄清这个吗？

谢谢！

Answer 1

编译器正在寻找BinDataGeneral，但它无法解析该符号。

尝试mongo::BinDataGeneral。