Question

How to check whether a file exists in C++ Win32 API

Answer 1

#define WIN32_LEAN_AND_MEAN
#define NOMINMAX

#include <windows.h>

BOOL FileExists(LPCTSTR filename)
{
    DWORD dwFileAttrib = GetFileAttributes(filename);

    return (dwFileAttrib != INVALID_FILE_ATTRIBUTES &&
            !(dwFileAttrib & FILE_ATTRIBUTE_DIRECTORY));
}

int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    if (FileExists(L"Resource.h")) {
        MessageBoxA(0, "Yes", "Info", MB_OK);
    }
    else {
        MessageBoxA(0, "No", "Info", MB_OK);
    }
}


/*
run:

Yes

*/

 

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