void cvWriteString(CvFileStorage* fs, char* name, char* str, int quote) {
    void *fptr;

    fptr = dlsym(_Chcv_handle, "cvWriteString_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, cvWriteString, fs, name, str, quote);
}
