当用Visual Studio 2010 编译时 发生如下编译错误：
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\crtdefs.h(550): error C2065: '_In_opt_z_' : undeclared identifier
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\crtdefs.h(550): error C2143: syntax error : missing ')' before 'const'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\crtdefs.h(550): warning C4229: anachronism used : modifiers on data are ignored
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\crtdefs.h(550): error C2182: '_invoke_watson' : illegal use of type 'void'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\crtdefs.h(550): error C2495: '_invoke_watson' : '__declspec(noreturn)' can only be applied to function declarations or definitions
。。。
。。。
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(96): error C2144: syntax error : 'int' should be preceded by ')'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(96): error C2448: 'isupper' : function-style initializer appears to be a function definition
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(96): error C2059: syntax error : ')'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(97): error C2144: syntax error : 'int' should be preceded by ';'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(97): error C2065: '_In_' : undeclared identifier
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(97): error C2144: syntax error : 'int' should be preceded by ')'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(97): error C2448: '_isupper_l' : function-style initializer appears to be a function definition
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(97): error C2146: syntax error : missing ';' before identifier '_locale_t'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(97): error C2059: syntax error : ')'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(98): error C2144: syntax error : 'int' should be preceded by ';'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(98): error C2065: '_In_' : undeclared identifier
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(98): error C2144: syntax error : 'int' should be preceded by ')'
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(98): error C2448: 'islower' : function-style initializer appears to be a function definition
2>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\ctype.h(98): error C2059: syntax error : ')'
。。。
这是由于WDK中的sal.h文件和Visual Studio中的sal.h文件冲突了。
由于Visual Studio 2010中的sal.h文件比较新，因此产生了这个错误。
解决方法：
1.删除WDK中的sal.h
2.重命名WDK中的sal.h
3.把Visual Studio 2010中的sal.h copy到WDK目录中 覆盖WDK的sal.h
WDK sal.h的位置在：C:\WinDDK\7600.16385.0\inc\api\sal.h
4. 将C:\Program Files\Microsoft Visual Studio 10.0\VC\include;
放在它C:\WinDDK\7600.16385.1\inc\api前面，即可