MFC里的CObArray,STL里的map,它们在析构时,会不会自动删除里面的指针所指的实例?

sodicc 2003-03-01 10:17:56

例如:
CObArray m_aryPeopleName;
CStringArray *p = new CStringArray;
m_aryPeopleName.Add(p);

那么这个p指针所指的对象,在程序结束时会不会被自动删除?

类似的还有STL里的:
typedef std::map<std::string,LPCSTR> MapLPCSTR;
MapLPCSTR m_map;
char *p = new char[1000];
m_map["abc"] = p; //程序结束时,p指向的内存会自动释放吗?
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sodicc 2003-03-03
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嘻嘻,是我搞错了。 谢谢ahao(天·狼·星星) !!
sodicc 2003-03-03
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error C2228: left of '.end' must have class/struct/union type
错误指向m_map。

查MSDN,发现map模板没有end()和begin()函数。何解?
ahao 2003-03-02
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MapLPCSTR m_map;
char *p = new char[1000];
m_map["abc"] = p;

// 释放
MapLPCSTR::iterator iter;
for( iter = m_map.begin(); iter != m_map.end(); iter++ )
delete[] (char*)(*iter).second;
bojinyu 2003-03-01
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当然不会了,只有象下面这样的才会自动释放,MSDN里说的是对象,不是对象指针

typedef std::map<std::string,_TCHAR[10]> MapCSTR;

Luxm 2003-03-01
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MSDN中说会,但实际好象不会。
hfqian 2003-03-01
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自己分配的当然需要自己去释放,除非在你的析构函数中有delete
lhb_780902 2003-03-01
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不会
bugfree 2003-03-01
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new 的对象一定记得用delete
daisysun 2003-03-01
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不会,一定要在析构前将所有非空指针删除(delete)!
E17 2003-03-01
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NO
sodicc 2003-03-01
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谁能帮我写MapLPCSTR m_map的正确释放代码,90分!
捕鲸叉 2003-03-01
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不会。
应手工写delete语句,否则会导致内存泄漏。
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(197KB)223,toolbar_droparrow_demo.zipDemonstrates how to use the new toolbar styles to add dropdown arrows to toolbar buttons (28KB)224,dynamictb.zipA simple tutorial that shows how to dynamically replace toolbars at runtime (35KB)225,toolbar_docking_demo.zipDemonstrates how to dock toolbars side-by-side (29KB)226,tapetoolbar.zipA spectacular variation on toolbars (35KB)227,chevions.zipAn introduction to using the cool new toolbar chevrons (18KB)228,toolgroupmanager.zipA reusable template class for managing multiple toolbars, only one of which is displayed at a time(30KB)229,toolbar_hotbuttons_demo.zipDemonstrates how to add rollover buttons to your toolbar(30KB)230,toolbar.zipWTL Tool Bar Drop-Down Extension(64KB)231,win95asm.zipIntroduction to Menus(113KB)232,outbar.zipCGfxOutBarCtrl, an Outlook98 bar-like control(163KB)233,tabstatus.zipAdvanced UI - MDI list in the status bar (and a custom Window List dialog)(62KB)234,gfxlist.zipList Control - Enhanced list control(1544KB)235,maillook.zipInternet Mail Look(42KB)236,cdxcdynamic.zipDynamic child window repositioning for dialogs, property sheets, form views and any other CWnd derived classes. (227KB)237,voicecmd.zipVoice Command Enabling Your Software (27KB)238,cj60lib.zipMFC Extension Library - CJ60 Version 6.07(1100KB)239,infobar.zipInformation Bar (62KB)240,switcher.zipA Switcher Control (like the Windows Task Bar) (40KB)
第一课: Windows程序运行原理及程序编写流程,窗口产生过程,句柄原理,消息队列,回调函数,窗口关闭与应用程序退出的工作关系,使用VC++的若干小技巧,stdcall与cdecl调用规范的比较,初学者常犯错误及注意事项。我们通常不必要知晓每一个函数和消息。但另一方面,也不得不记住其中的一部分,否则很难将VC++运用自如。到底该记住哪些,这在我们的课程中都涉及到。 第二课: C++经典语法与应用,类的编写与应用,构造与析构函数,函数的重载,类的继承,函数覆盖,基类与派生类的构造函数、析构函数先后调用顺序,如何在派生类构造函数中向基类的构造函数传递参数,this成员变量,类型转换的内幕,虚拟函数与奇妙多态性。VC工程的编译原理与过程,将工程中不同的类拆分到不同的原文件中,每一个类由一个.h和.cpp文件共同完成,然后解决头文件重复定义问题,培养了学员良好的编程习惯,也为以后分析MFC Appwizard生成的工程奠定了良好基础。 第三课: 讲述MFC AppWizard的原理与MFC程序框架的剖析。AppWizard是一个原代码生成工具,是计算机辅助程序设计软件,Winmain在MFC程序中是如何从源程序中被隐藏的,theApp全局变量是如何被分配的,MFC框架中的几个类的作用与相互关系,MFC框架窗口是如何产生和销毁的,对窗口类的PreCreateWidow和OnCreate两个函数的着重分析,Windows窗口与C++中的CWnd类的关系。 第四课: 讲述如何运用ClassWizard及对MFC消息响应函数机制的分析,理解发送给窗口的消息是如何被MFC框架通过窗口句柄映射表和消息映射表来用窗口类的函数进行响应的。掌握设备描述表及其封装类CDC的使用,CDC是如何与具体的设备发生关联的,融合具体的画图程序进行分析。如何设置封闭图形的填充刷子(位图画刷与透明画刷的使用)。 第五课: 掌握CDC的文字处理程序的编写,如何产生自定义字体和自定义插入符,熟悉对CString类的使用。通过对kala ok程序的编写,讲解定器的使用和DrawText函数的巧妙运用。讲解如何使用CDC的裁减功能。 第六课: 菜单的工作原理及编写应用,菜单命令消息在MFC框架程序的几个类中的传递顺序和处理过程。标记菜单的实现原理、图形菜单的实现及常犯错误的分析,GetSystemMetrics的应用,快捷弹出菜单的实现方式及其命令响应函数有效范围(与弹出菜单所指定的父窗口有密切的关系,最底层的子窗口具有最优先的处理机)。 第七课.: 动态菜单的编写,如何让程序在运行产生新的菜单项及如何手工为这些新产生的菜单命令安排处理函数,如何在顶层窗口中截获对菜单命令的处理,更进一步掌握CString类的应用。 第八课.: 对话框用户界面程序的编写,如何向对话框控件联接数据成员及其实现机理,如何向对话框控关联控件类,如何利用对话框类的成员函数向控件发送消息和获取对话框控件的类指针,如何直接利用对话框控件类操纵对话框控件(发送消息和直接调用成员函数)。如何在程序运行产生和销毁控件。对话框控件的几种操作方式的优劣比较分析。 第九课: 如何让对话框上的文本框在程序启动后立即获得焦点,如何利用SetWindowLong改变窗口的回调函数,通过改变文本框的默认回车处理方式进行演示。实现多个输入文本框间通过回车逐一向下传递焦点的另一种巧妙方法(用缺省按钮来处理)。利用SetWindowLong和定器轮回改变窗口的图标。如何实现对话框的部分收缩和展开。如何在主对话框程序启动立即隐藏对话框的巧妙实现方式与精妙思想(不能直接在OnInitDialog处理。包括自定义消息的实现) 第十课: 如何制作属性页对话框和向导对话框,融合讲解组合框(如何调整组合框的大小)、列表框、单选按钮、复选按钮 等常用对话框控件的多种使用方法。如何限制用户在不满足设定的条件切换到其他属性页和向导页。 第十一课: 如何修改MFC AppWizard向导生成的框架程序的外观,包括修改标题栏的多种方式及原理,修改图标、光标、背景的两种方法。如何给应用程序增加工具栏和删除工具栏按钮。定制状态栏,在CView中获取状态栏对象的几种方式,在状态栏中添加钟显示(掌握CTime类和静态成员变量和函数的用法),鼠标坐标显示,进度条(主窗口产生后立即产生进度条的巧妙思想,不能在OnCreate函数中直接处理,要用到自定义消息的方法)。如何为窗口添加背景位图。 第十二课: 如何使用自定义画笔(颜色,线宽,线形),画刷(形状,颜色)。如何为程序中添加选项菜单和选项设置对话框,如何使用标准颜色对话框,窗口重绘原理,在选项对话框中实现预览功能。实现选项对话框和窗口类中的数据交换。 第十三课: 如何让CDC上输出的文字、图形具有保持功能,元文件设备描述表的使用,CpaintDC与CClientDC的区别与应用,OnPaint与Ondraw在CView中的关系及实现内幕,集合类CObArray的使用,滚动窗口的实现,设备坐标与逻辑坐标的转换。 第十四课: 文件读写,CFileDialog,CFile,fstream,CArchive类的使用与比较。在应用中讲解const char *与char * const的区别,字符串的使用原理,如何使用CString的内存缓冲区。注册表与win.ini文件的读写方式及相关知识点。 第十五课: 如何利用CDocument类的串行化存储功能及MFC框架程序提供的文件打开与保存功能的实现原理。如何实现类对串行化的支持,CObArray的串行化实现内幕。MFC框架程序的几个主要类之间如何获得相互的指针引用。 第十六课: 网络程序的编写,Socket是连接应用程序与网络驱动程序的桥梁,Socket在应用程序中创建,通过bind与驱动程序建立关系。此后,应用程序送给Socket的数据,由Socket交给驱动程序向网络上发送出去。计算机从网络上收到与该Socket绑定的IP+Port相关的数据后,由驱动程序交给Socket,应用程序便可从该Socket中提取接收到的数据。网络应用程序就是这样通过socket进行数据的发送与接收的。UDP与TCP的工作原理与编写过程,包含如何在程序中连接库文件,telnet工具软件在编写网络程序中的用途 第十七课: 多线程程序的编写,如何通过互斥来保证多线程的安全。如何利用命名互斥保证只有一份程序实例被运行,结合多线程,网络编程,自定义消息,数据类型转换,如何改变文本框对回车的默认处理方式等技术编写网络聊天程序。 第十八课: 动态连接库程序的编写,库函数的两种输出方式。调用程序对动态连接库的静态连接与动态连接方式,如何利用工具查看动态连接库的函数,C/C++连接规范中的命名转变问题分析,如何获得动态连接库的函数 的指针,如何用typedef声明指向函数的指针类型。如何调试动态连接库。 第十九课: ActiveX控件的应用与工作原理,ActiveX控件的编写,如何为控件安排属性,方法,事件,属性页,持久性存储。如何注册控件与取消控件注册。如何测试与调试控件。 第二十课: 综合答疑与一些高深主题的介绍,包括如何安装系统钩子函数,dll连接库的全局变量数据共享问题分析,ADO数据库编程,如何将数据库记录显示在Clistview网格中。 以上内容为作者对课件的初步整理,还有很多课堂上要讲到,但在本大纲中还没有被撰稿的内容,以后将逐渐完善本大大纲。

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        VC/MFC社区版块或许是CSDN最“古老”的版块了,记忆之中,与CSDN的年龄几乎差不多。随着时间的推移,MFC技术渐渐的偏离了开发主流,若干年之后的今天,当我们面对着微软的这个经典之笔,内心充满着敬意,那些曾经的记忆,可以说代表着二十年前曾经的辉煌……
        向经典致敬,或许是老一代程序员内心里面难以释怀的感受。互联网大行其道的今天,我们期待着MFC技术能够恢复其曾经的辉煌,或许这个期待会永远成为一种“梦想”,或许一切皆有可能……
        我们希望这个版块可以很好的适配Web时代,期待更好的互联网技术能够使得MFC技术框架得以重现活力,……

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