For C++ projects (native/ATL):
#ifndef _TODO_H_
#define _TODO_H_
#pragma once
// from atldef.h:
#ifndef _ATL_STRINGIZE
#define __ATL_STRINGIZE(_Value) #_Value
#define _ATL_STRINGIZE(_Value) __ATL_STRINGIZE(_Value)
#endif
// put x in quotes, no need to use #pragma!
#define __TODO(x) __pragma(message(__FILE__"("_ATL_STRINGIZE(__LINE__)") : TODO: "x))
#define __WTF(x) __pragma(message(__FILE__"("_ATL_STRINGIZE(__LINE__)") : WTF?! "x))
// prefer to use ISO-formatted date
#define __BUGFIX(date, x) __pragma(message(__FILE__"("_ATL_STRINGIZE(__LINE__)") : BUGFIX: "#date" "x))
#define __CHANGE(date, x) __pragma(message(__FILE__"("_ATL_STRINGIZE(__LINE__)") : CHANGE: "#date" "x))
#endif _TODO_H_
Looking for something like that for C#.