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                [TOC] ## 概述 處理 日期的類 ## 示例 ### 創建日期 ``` QDate myDate(2023, 9, 8); ``` ### 創建當前日期 ``` QDate currentDate = QDate::currentDate(); ``` ### 日期的格式化 ``` QString formattedDate = myDate.toString("yyyy-MM-dd"); ``` ### 日期比較 ``` if (date1 < date2) { // date1 在 date2 之前 } ``` ### 計算差值 ``` QDate startDate(2023, 9, 1); QDate endDate(2023, 9, 8); int daysBetween = startDate.daysTo(endDate); // 計算天數差 ``` ### 日期有效性 ``` if (myDate.isValid()) { // 日期有效 } else { // 日期無效 } ``` ## 日期的調整 ``` QDate newDate = myDate.addDays(7); // 在日期上增加7天 ```
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