get_directory(dname)

void ClientResize(HWND hWnd, int nWidth, int nHeight)
{
    RECT rcClient, rcWind;
    POINT ptDiff;
    GetClientRect(hWnd, &rcClient);
    GetWindowRect(hWnd, &rcWind);
    ptDiff.x = (rcWind.right - rcWind.left) - rcClient.right;
    ptDiff.y = (rcWind.bottom - rcWind.top) - rcClient.bottom;
    MoveWindow(hWnd, rcWind.left, rcWind.top, nWidth + ptDiff.x, nHeight + ptDiff.y, TRUE);
}

WCHAR wstr_dname[MAX_PATH];

UINT APIENTRY OFNHookProcOldStyle(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    if (uMsg == WM_INITDIALOG)
    {
        ClientResize(hWnd, 424, 255);

        RECT rect;
        GetWindowRect(hWnd, &rect);
        MoveWindow(hWnd,
            (GetSystemMetrics(SM_CXSCREEN) / 2) - ((rect.right - rect.left) / 2),
            (GetSystemMetrics(SM_CYSCREEN) / 2) - ((rect.bottom - rect.top) / 2),
            rect.right - rect.left, rect.bottom - rect.top, TRUE);

        HWND bttn1 = GetDlgItem(hWnd, IDOK);
        HWND bttn2 = GetDlgItem(hWnd, IDCANCEL);
        HWND list1 = GetDlgItem(hWnd, 1120);
        HWND list2 = GetDlgItem(hWnd, 1121);
        HWND label1 = GetDlgItem(hWnd, 1090);
        HWND label2 = GetDlgItem(hWnd, 65535);
        HWND label3 = GetDlgItem(hWnd, 1089);
        HWND label4 = GetDlgItem(hWnd, 1091);
        HWND label5 = GetDlgItem(hWnd, 1088);
        HWND cmbbx1 = GetDlgItem(hWnd, 1136);
        HWND cmbbx2 = GetDlgItem(hWnd, 1137);
        HWND txtbx1 = GetDlgItem(hWnd, 1152);

        SetWindowText(label1, "&Files: (*.*)");
        SetWindowText(label2, "&Directories:");
        SetWindowText(label3, "Directory &Name:");
        SetWindowText(label4, "D&rives:");
        DestroyWindow(cmbbx1);
        DestroyWindow(txtbx1);

        MoveWindow(bttn1, 256, 224, 77, 27, TRUE);
        MoveWindow(bttn2, 340, 224, 77, 27, TRUE);
        MoveWindow(label1, 232, 56, 72, 16, TRUE);
        MoveWindow(label2, 8, 56, 72, 16, TRUE);
        MoveWindow(label3, 8, 8, 93, 16, TRUE);
        MoveWindow(label4, 232, 176, 50, 16, TRUE);
        MoveWindow(label5, 8, 24, 409 * 100, 16, TRUE);
        MoveWindow(list1, 232, 72, 185, 93, TRUE);
        MoveWindow(list2, 8, 72, 213, 123, TRUE);
        MoveWindow(cmbbx2, 232, 192, 185, 19, TRUE);

        DlgDirListW(hWnd, wstr_dname, 1120, 1088, DDL_ARCHIVE | DDL_READWRITE | DDL_READONLY);
        PostMessageW(hWnd, WM_SETFOCUS, 0, 0);
    }

    if (uMsg == WM_COMMAND && HIWORD(wParam) == BN_CLICKED && LOWORD(wParam) == IDOK)
    {
        HWND label1 = GetDlgItem(hWnd, 1090);
        HWND label2 = GetDlgItem(hWnd, 65535);
        HWND label3 = GetDlgItem(hWnd, 1089);
        HWND label4 = GetDlgItem(hWnd, 1091);
        HWND label5 = GetDlgItem(hWnd, 1088);

        GetDlgItemTextW(hWnd, 1088, wstr_dname, MAX_PATH);
        PostMessageW(hWnd, WM_COMMAND, IDABORT, 0);
        return TRUE;
    }

    if (uMsg == WM_COMMAND && HIWORD(wParam) == BN_CLICKED && LOWORD(wParam) == IDCANCEL)
    {
        tstring tstr_dname = widen("");
        wcsncpy_s(wstr_dname, tstr_dname.c_str(), MAX_PATH);
        PostMessageW(hWnd, WM_COMMAND, IDABORT, 0);
        return TRUE;
    }

    if (uMsg == WM_CLOSE)
    {
        tstring tstr_dname = widen("");
        wcsncpy_s(wstr_dname, tstr_dname.c_str(), MAX_PATH);
        PostMessageW(hWnd, WM_COMMAND, IDABORT, 0);
        return TRUE;
    }

    return FALSE;
}

DLL char *get_directory(char *dname)
{
    OPENFILENAMEW ofn;

    HWND SitehWnd;
    SitehWnd = GetAncestor(GetActiveWindow(), GA_ROOTOWNER);

    string str_dname = dname;

    tstring tstr_filter = widen("*.*|*.*|");
    replace(tstr_filter.begin(), tstr_filter.end(), '|', '\0');
    tstring tstr_dname = widen(str_dname);
    tstring tstr_title = widen("Select Directory");
    tstring tstr_empty = widen("");

    if (tstr_dname == tstr_empty)
        GetCurrentDirectoryW(MAX_PATH, wstr_dname);
    else
        wcsncpy_s(wstr_dname, tstr_dname.c_str(), MAX_PATH);

    ZeroMemory(&ofn, sizeof(ofn));
    ofn.lStructSize = sizeof(ofn);
    ofn.hwndOwner = SitehWnd;
    ofn.lpstrFile = NULL;
    ofn.nMaxFile = MAX_PATH;
    ofn.lpstrFilter = tstr_filter.c_str();
    ofn.nFilterIndex = 0;
    ofn.lpstrTitle = tstr_title.c_str();
    ofn.lpstrInitialDir = wstr_dname;
    ofn.Flags = OFN_NONETWORKBUTTON | OFN_ENABLEHOOK | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_LONGNAMES;
    ofn.lpfnHook = OFNHookProcOldStyle;

    GetOpenFileNameW(&ofn);

    DWORD attrib = GetFileAttributesW(wstr_dname);

    if (attrib != INVALID_FILE_ATTRIBUTES && (attrib & FILE_ATTRIBUTE_DIRECTORY))
    {
        static string result;
        result = shorten(wstr_dname);
        return (char *)result.c_str();
    }

    return (char *)"";
}