int GetSaveFile() {

    OPENFILENAME ofn;

    char szFileName[MAX_PATH] = "";

​

    ZeroMemory(&ofn, sizeof(ofn));

​

    ofn.lStructSize = sizeof(ofn);

    ofn.hwndOwner = NULL;

    ofn.lpstrFilter = "Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0";

    ofn.lpstrFile = szFileName;

    ofn.nMaxFile = MAX_PATH;

    ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;

    ofn.lpstrDefExt = "txt";

​

    if(GetSaveFileNameA(&ofn)) {

        FILE* file = fopen(szFileName, "w");

​

        if (file == NULL) {

            fprintf(stderr, "Unable to open file\n");

            return 1;

        }

​

        fprintf(file, "a\n");

​

        fclose(file);

    } else {

        fprintf(stderr, "No file selected\n");

        return 1;

    }

​

    return 0;

}