Why is GetCurrentDirectory() throwing an exception when trying to create a file?

Troubleshooting GetCurrentDirectory() Exception

Your code seeks to create a file in the current directory, but an exception occurs at GetCurrentDirectory(). To understand the issue, let's delve into the parameters used:

• MAX_PATH: This is a constant representing the maximum path size supported by Windows. Use TCHAR Buffer[MAX_PATH] instead of NPath = NULL.
• NPath: The LPTSTR type is a pointer to a character string. Initialize it with TCHAR Buffer[MAX_PATH] first.

Additionally, retrieving the executable path using GetCurrentDirectory() is not reliable. Utilize the GetModuleFileName function instead:

TCHAR buffer[MAX_PATH] = { 0 };
GetModuleFileName(NULL, buffer, MAX_PATH);

For a more comprehensive approach, consider the following function that extracts the directory without the file name:

#include <windows.h>
#include <string>
#include <iostream>

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

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