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error C2065: 'dlg' : undeclared identifier
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The OutputStream class referenced in outputstream.cpp isn't being recognised. As far as i can tell it's defined in the audiere.h header file in the audiere project, and the #include directive at line 2 of outputstream.cpp should be including that file.. Two things to try in VC++: In line 8 of outputstream.cpp double-click on OutputStream and then right-click, and on the context menu select Go ...
The most common causes of C2065 are that the identifier hasn't been declared, the identifier is misspelled, the header where the identifier is declared isn't included in the file, or the identifier is missing a scope qualifier, for example, cout instead of std::cout.
When looking up why C2065 occurred, on the VS docs, my problem never fit any of the criteria for why the issue would occur. The appropriate header file is #included , the class meets the criteria for being declared and defined, and I don't use a pre-compiled header.
Fixed. I had to #include . I am assuming that my libraries and headers that I was including with VS2010 was automatically calling #incude in one of the headers, and since this is the first time working with this file I really just had no idea of what to include, as for some reason I thought unique_ptr was a part of cstdlib.
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
We learn about the compiler error C2065 in C++. We look at some of the common reasons for this error. We also look at possible solutions.
编号：C2065 直译：标识符"xxxx"未定义。 错误分析： 首先，解释一下什么是标识符。标志符是程序中出现的除关键字之外的词，通常由字母、数字和下划线组成，不能以数字开头，不能与关键字重复，并且区分大小写。
You need to make a header file where you put the VideoPlayer class definition, much like the header file for the IVideoPlayer class. You put the implementation of the VideoPlayer member functions in the source file. Then include the header file in the source file where you need the VideoPlayer class.
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Maybe there is no #include "Restrict.h" in this file. (If there is also an #include "pch.h", then put your declarations after that line).