字符串转换日期CStringtoCTime_c++字符串转日期,c++字符串转日期资源-CSDN下载

共18个文件

h：4个

cpp：3个

opt：1个

4星 · 超过85%的资源需积分: 44 96 浏览量 2011-07-25 15:17:33 上传评论收藏 25KB RAR 举报

在编程中，尤其是在处理用户输入或者从文件、网络获取数据时，经常需要将字符串转换为日期时间对象。在C++中，如果你使用MFC（Microsoft Foundation Classes）库，那么`CString`和`CTime`是两个常用的数据类型，分别用于表示字符串和日期时间。本文将详细介绍如何将`CString`类型的字符串转换为`CTime`对象。 `CString`是MFC提供的一种字符串类，它提供了丰富的字符串操作功能，并且与标准C++的`std::string`兼容。`CTime`类则用于表示日期和时间，可以存储从1899年12月30日00:00:00到公元4714年11月24日11:59:59之间的所有日期和时间。字符串转换为日期的常见格式是遵循某种日期时间格式规范，如ISO 8601（"YYYY-MM-DD"）或美国样式（"MM/DD/YYYY"）。在C++中，我们可以使用`CTime`类的`ParseDateTime`成员函数来完成这个转换。这个函数接受一个字符串，尝试按照预设的格式解析出日期和时间。下面是一个简单的示例，演示如何进行转换： ```cpp #include <afx.h> void CStringToCTime(const CString& strDateTime, CTime& timeResult) { // 定义日期时间格式，例如 "YYYY/MM/DD HH:MM:SS" static const char* pszFormat = "yyyy/mm/dd hh:mm:ss"; // 尝试解析日期时间字符串 if (timeResult.ParseDateTime(strDateTime, pszFormat)) { // 解析成功，时间结果存储在timeResult中 // 可以进一步使用timeResult对象进行日期时间操作 } else { // 解析失败，可能需要检查输入字符串的格式是否正确 AfxMessageBox("日期时间字符串格式不正确"); } } ``` 在这个例子中，我们定义了日期时间格式`pszFormat`，然后用`ParseDateTime`函数尝试解析`strDateTime`。如果解析成功，`timeResult`将被设置为相应的日期时间对象；否则，我们将显示一个错误消息。需要注意的是，`ParseDateTime`函数对日期时间格式的理解是基于区域设置的，因此在某些情况下，可能需要根据实际应用的地区调整日期和时间分隔符。例如，如果是美国样式，可能需要将格式改为"mm/dd/yyyy"。此外，`CTime`类还提供了其他方法，如`GetYear()`, `GetMonth()`, `GetDay()`, `GetHour()`, `GetMinute()`, `GetSecond()`等，用于获取日期时间的各个部分。这在需要单独处理日期和时间组件时非常有用。将`CString`转换为`CTime`涉及到字符串解析，通常使用`CTime`的`ParseDateTime`函数完成。理解日期时间格式的规范和函数的工作方式是实现转换的关键。希望这个介绍对你理解和应用这个功能有所帮助。如果你遇到更复杂的情况，比如处理不同的日期时间格式，可能需要使用更高级的库，如Boost.Date_Time或C++20引入的`std::chrono`库。

资源推荐

资源详情

资源评论

收起资源包目录

test.rar （18个子文件）

test

test.opt 48KB

test.h 1KB

StdAfx.cpp 206B

test.plg 1KB

resource.h 728B

test.ncb 41KB

test.cpp 2KB

test.clw 1KB

test.rc 5KB

Debug

ReadMe.txt 3KB

testDlg.cpp 5KB

StdAfx.h 1KB

testDlg.h 1KB

test.dsp 4KB

res

test.rc2 396B

test.ico 1KB

test.dsw 531B

test.aps 35KB

======================================================================== MICROSOFT FOUNDATION CLASS LIBRARY : test ======================================================================== AppWizard has created this test application for you. This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application. This file contains a summary of what you will find in each of the files that make up your test application. test.dsp This file (the project file) contains information at the project level and is used to build a single project or subproject. Other users can share the project (.dsp) file, but they should export the makefiles locally. test.h This is the main header file for the application. It includes other project specific headers (including Resource.h) and declares the CTestApp application class. test.cpp This is the main application source file that contains the application class CTestApp. test.rc This is a listing of all of the Microsoft Windows resources that the program uses. It includes the icons, bitmaps, and cursors that are stored in the RES subdirectory. This file can be directly edited in Microsoft Visual C++. test.clw This file contains information used by ClassWizard to edit existing classes or add new classes. ClassWizard also uses this file to store information needed to create and edit message maps and dialog data maps and to create prototype member functions. res\test.ico This is an icon file, which is used as the application's icon. This icon is included by the main resource file test.rc. res\test.rc2 This file contains resources that are not edited by Microsoft Visual C++. You should place all resources not editable by the resource editor in this file. ///////////////////////////////////////////////////////////////////////////// AppWizard creates one dialog class: testDlg.h, testDlg.cpp - the dialog These files contain your CTestDlg class. This class defines the behavior of your application's main dialog. The dialog's template is in test.rc, which can be edited in Microsoft Visual C++. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named test.pch and a precompiled types file named StdAfx.obj. Resource.h This is the standard header file, which defines new resource IDs. Microsoft Visual C++ reads and updates this file. ///////////////////////////////////////////////////////////////////////////// Other notes: AppWizard uses "TODO:" to indicate parts of the source code you should add to or customize. If your application uses MFC in a shared DLL, and your application is in a language other than the operating system's current language, you will need to copy the corresponding localized resources MFC42XXX.DLL from the Microsoft Visual C++ CD-ROM onto the system or system32 directory, and rename it to be MFCLOC.DLL. ("XXX" stands for the language abbreviation. For example, MFC42DEU.DLL contains resources translated to German.) If you don't do this, some of the UI elements of your application will remain in the language of the operating system. /////////////////////////////////////////////////////////////////////////////

评论收藏

内容反馈