如何获取当前目录？ [英] How to get Current Directory?

问题描述

我一直在C＃和Delphi中这样做，但C ++是邪恶的。目的是在当前目录（可执行文件正在运行）中创建一个文件。

I've been doing this in C# and Delphi ,but C++ is evil.The purpose is to create a file in the current directory(where the executable is running).

我的代码：

LPTSTR NPath = NULL;
DWORD a = GetCurrentDirectory(MAX_PATH,NPath);
HANDLE hNewFile = CreateFile(NPath,GENERIC_WRITE,0,NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);

我在GetCurrentDirectory（）获得异常。

I get exception at GetCurrentDirectory().

请告诉我为什么我得到一个异常，如何使它更容易在C + +？

Please tell me why I get an exception and how do I make it easier in C++?

推荐答案

在C ++上书之前，你要走得更远，因为这将有助于得到一个更坚实的基础。 Accelerated C ++ by Koenig and Moo is excellent。

I would recommend reading a book on C++ before you go any further, as it would be helpful to get a firmer footing. Accelerated C++ by Koenig and Moo is excellent.

获取可执行路径使用 GetModuleFileName ：

char buffer[MAX_PATH]
GetModuleFileName( NULL, buffer, MAX_PATH );

这里有一个C ++函数获取没有文件名的目录：

Here's a C++ function that gets the directory without the file name:

#include <windows.h>
#include <string>
#include <iostream>
using namespace std;;

string ExePath() {
    char buffer[MAX_PATH];
    GetModuleFileName( NULL, buffer, MAX_PATH );
    string::size_type pos = string( buffer ).find_last_of( "\\/" );
    return string( buffer ).substr( 0, pos);
}

int main() {
    cout << "my directory is " << ExePath() << "\n";
}

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