使用`#ifdef`时，Visual Studio错误地标记非活动代码块

Question

My project has a bunch of #ifdefs . The macros used by these #ifdef s are usually passed through the command line using the '/D' option to get different build configurations. Visual studio incorrectly assumes that these macros are not defined and greys out the code blocks present inside these #ifdef s. The problem is not syntax highlighting - I can turn the grayed out code to colored code from Options; the main issue is that I am not able to go to the function definition of any functions present inside that #ifdef . I tried reading about Visual Studio hint files but that didn't work for me.

Can anyone help me with this issue? I am using Visual Studio 2008.

Answer 1

Did you define several kinds of builds within VS as Configurations like Debug, Release, or are you building with makefiles? If you haven't taught VS about your /D options then I guess it can't help you. But you should be able to set up Preprocessor Definitions under project properties (Configuration Properties, C/C++, Preprocessor) to get the effect you want, right?

For each option /DMACRO=XXX that you pass to the compiler, specify MACRO=XXX in the IntelliSense Preprocessor Definitions. For each option /DMACRO (no value) that you pass to the compiler, specify MACRO in the IntelliSense preprocessor definitions.

Answer 2

If you're not debugging, and you're just trying to get intellisense or whatever to react, you can always just throw up a quick #define to force the IDE to behave.

Seems you have a similar problem as this fellow:

Can intellisense be enabled in VS2008 within preprocessor directive blocks like #ifndef ... #endif