int GetWeekNumber(int year, int month, int day)
{
    // 週數計算
    int lval_tempDayofYear = 0;
    int lvar_tempWeekNumber = 0;
    int lvar_ShiftDayOfWeek = QDate(year,1,1).dayOfWeek(); // 1月1日之星期幾
    int lval_AddWeekNumber = 0;
    if (lvar_ShiftDayOfWeek < 4) // 1月1日在周四之前
    {
        // 第一周在1月1日，否則在前一年之最後一周
        lval_AddWeekNumber = 1;
    }
    else
    {
        lval_AddWeekNumber = 0;
    }
    lval_tempDayofYear = QDate(year,month,day).dayOfYear();
    lvar_tempWeekNumber = ((lval_tempDayofYear + lvar_ShiftDayOfWeek - 1) / 7) + lval_AddWeekNumber;
    if (lvar_tempWeekNumber == 0)
    {
        return(GetWeekNumber(year-1, 12, 31));
    }
    return (lvar_tempWeekNumber);
}