#include <stdio.h>
#include <windows.h>

typedef int (*isattyFunc)(int fd);

int main()
{
    HMODULE cygwin;
    isattyFunc isatty;
    int isattyResult;
    LPWCH env;
    wchar_t *envPtr;

    AddDllDirectory(L"c:\\unix\\bin");

    env = GetEnvironmentStringsW();
    for (envPtr = env; *envPtr != '\0'; envPtr += wcslen(envPtr) + 1) {
        _putws(envPtr);
    }

    cygwin = LoadLibraryExW(L"cygwin1.dll", NULL, LOAD_LIBRARY_SEARCH_DEFAULT_DIRS);
    if (cygwin == NULL) {
        printf("No cygwin1.dll found in known paths: %d\n", GetLastError());
        return 0;
    }

    isatty = (isattyFunc)GetProcAddress(cygwin, "isatty");
    if (isatty == NULL) {
        printf("No isatty() function exported by cygwin1.dll.\n");
        return 0;
    }

    fflush(stdout);

    isattyResult = isatty(1);
    printf("isatty() result: %d\n", isattyResult);

    return 0;
}