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Question

I'm trying to get the path of my currently running executable like so:

#include <Windows.h>
#include <stdio.h>

int main()
{
    LPWSTR current_filepath = (LPWSTR)malloc(MAX_PATH * sizeof(LPWSTR));
    DWORD path_size = 0;
    DWORD buffer_size = GetModuleFileNameW(0, current_filepath, path_size);
    if (!buffer_size)
    {
        DWORD err = GetLastError();
        perror("Error: ");
    }
    else
    {
        wprintf(L"%ls \n", current_filepath);
    }
}

But when I run the application with a breakpoint on the if I can see that the buffer_size is 0 and the current_filepath is not filled with the path it should be.

I'm not sure on what I did wrong so if anyone has a pointer in the right direction it would be greatly appreciated.

Accepted Answer

I'm trying to get the path of my currently running executable like so:

Getting the file path to the currently running EXE basically involves passing NULL or nullptr to GetModuleFileName.

Here's what you really want:

LPCWSTR GetPathToRunningExe()
{
    wchar_t szPath[MAX_PATH] = { 0 };
    DWORD dwSize = GetModuleFileNameW(NULL, szPath, ARRAYSIZE(szPath));
    wchar_t* result = NULL;

    if (dwSize > 0)
    {
        size_t count = wcslen(szPath) + 1;
        result = (wchar_t*)malloc(count * sizeof(szPath[0]));
        wcscpy_s(result, count, szPath);
    }
    return result;
}

Panorama Média Global

Getmodulefilenamew Returns Null on Current Module [Closed]

1 Answer

James H. Sterling