This little macro prints out user warnings to the output window in a format the “Error List” within Visual Studio will understand and parse. Taken from Stack Overflow and modified a little.
#define STRINGISE_IMPL(x) #x
#define STRINGISE(x) STRINGISE_IMPL(x)
// Use: #pragma message WARN("My message")
#if _MSC_VER
# define FILE_LINE_LINK __FILE__ "(" STRINGISE(__LINE__) ") : "
# define WARN(exp) (FILE_LINE_LINK "warning: " exp)
#else//__GNUC__ - may need other defines for different compilers
# define WARN(exp) ("WARNING: " exp)
#endif
It will produce output like this:
1>.\src\bug.cpp(82) : warning: check me
When this line is present in the source file.
#pragma message WARN("check me")
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