[VC.NET] 如何修復 quot;C2039: lsquo;GetCurrentDirectoryA()rsquo; : is Not a Member of lsquo;System::IO::Directoryrsquo;quot;問題

看到論壇上有人問到如何處理這樣的問題。看了一下前輩的回應後才發現，原來這樣的問題是由於Windows.h檔案內，已定義了GetCurrentDirectory這個巨集所導致。該巨集會在編譯時把GetCurrentDirectory給改為GetCurrentDirectoryA或是GetCurrentDirectoryW。

#if UNICODE #define GetCurrentDirectory GetCurrentDirectorryW #else #define GetCurrentDirectory GetCurrentDirectorryA #endif

因此使用類似下面的程式，在編譯時就會發生錯誤。

#include “stdafx.h” #include using namespace System; using namespace System::IO;

int main(array ^args) { Console::WriteLine(L"Dir: “+System::IO::Directory::GetCurrentDirectory()); // Error! return 0; }

錯誤訊息

解決辦法可利用#undef去把該巨集給取消。

#undef GetCurrentDirectory

像是

#include “stdafx.h” #include using namespace System; using namespace System::IO;

#undef GetCurrentDirectory

int main(array ^args) { Console::WriteLine(L"Dir: “+System::IO::Directory::GetCurrentDirectory()); return 0; }

Link

How to Fix – “C2039: ‘GetCurrentDirectoryA()’ : is Not a Member of ‘System::IO::Directory’”