windows 如何克服 mmsystem.h 引发的错误
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How to Overcome Errors Thrown by mmsystem.h
提问by Anton Gogolev
I am not able to get out of these simple bugs, but would be great full if some one could answer to weed out from these errors. I included windows.h and some other necessary headers but couldn't able get out of it.
我无法摆脱这些简单的错误，但如果有人能回答从这些错误中剔除，那就太好了。我包含了 windows.h 和其他一些必要的标题，但无法摆脱它。
Snippet of errors:
错误片段：
error C2146: syntax error : missing ';' before identifier 'MMVERSION'
error C4430: missing type specifier - int assumed. Note: C++ does not support default-int error C4430: missing type specifier - int assumed. Note: C++ does not support default-int error C2143: syntax error : missing ';' before '*'
error C4430: missing type specifier - int assumed. Note: C++ does not support default-int error C2146: syntax error : missing ';' before identifier 'ms'
error C4430: missing type specifier - int assumed. Note: C++ does not support default-int error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
Thanks In Advance
提前致谢
回答by Max Lybbert
To expand on Anton's answer: windows.h #defines UINTto be unsigned int. That's a C macro define, not a typedef. If you #include windows.hbefore you #include mmsystem.hthe line he points to will be read as:
扩展安东的答案： windows.h #defines UINTto be unsigned int。那是一个 C 宏定义，而不是一个typedef. 如果你#include windows.h在你之前#include mmsystem.h，他指向的那条线将被读作：
typedef unsigned int MMVERSION;
However, if you do it the wrong way 'round, then UINT will expand to nothing, and that line will become:
但是，如果您以错误的方式进行操作，则 UINT 将扩展为无，该行将变为：
typedef MMVERSION;
That isn't valid C++ and you will get a parse error. Which is exactly what you're getting.
这不是有效的 C++，你会得到一个解析错误。这正是你得到的。
回答by Anton Gogolev
Look in mmsystem.h, lines 112 and 113:
查看mmsystem.h第 112 和 113 行：
#ifdef _WIN32
typedef UINT MMVERSION; /* major (high byte), minor (low byte) */
So be sure to include windows.hbefor including mmsystem.h, and if it does not help, try #defineing _WIN32manually.
所以一定要包括windows.hbefor包括mmsystem.h，如果没有帮助，尝试#define荷兰国际集团_WIN32手动。
