错误C2259的官方描述是:“'class' : cannot instantiate abstract class”。这意味着你尝试创建了一个抽象类的实例,但抽象类是不允许被直接实例化的。抽象类至少包含一个纯虚函数(pure virtual function),纯虚函数是一个在基类中声明但没有实现的函数,用于在派生类中实现多态。 2. 提供可能导致错误C225
error C2259: 'CException' : cannot instantiate abstract class 该错误在vc6里可以编译通过,但是在vs2008中编译不通过。此时需要将CException改为CUserException就可以。
vc6.0编译通过,VS2008则报错 解决方法: 把CException改为CUserException
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问为什么我收到错误消息"error C2259：... cannot instantiate abstract“？EN要修复特定问题，您需要为ElectricGuitarComponentFactory声明析构函数，因为您已将基类的析构函数声明为纯虚函数。我不知道为什么你要声明基类析构函数是纯虚的；这样做真的没有任何意义。析构函数应该声明为虚拟的，但不是纯虚拟的。1...
a我可以和你一起打排球吗 I may play the volleyball together with you [translate] a'CPostAddress' : cannot instantiate abstract class due to following members: ‘CPostAddress’ : 不能instantiate抽象类由于以下成员: [translate] 英语翻译 日语翻译 韩语翻译 德语翻译 法语翻译 俄语翻译 阿拉伯语翻译 ...
Compiler error C2259'class': cannot instantiate abstract class Compiler error C2260'specifier': invalid InternalsVisibleToAttribute friend assembly specifier Compiler error C2261'string': assembly reference is invalid and cannot be resolved Compiler error C2262'specifier': InternalsVisibleTo declarations cannot...
Compiler error C7635a module import declaration cannot appear %$M Compiler error C7636'%1$T': invalid expression type for '%2$I'; must be pointer-to-data Compiler error C7637%1$T: you cannot implicitly instantiate a class template while it is being defined ...
Scenario: My goal is to load up an excel spreadsheet through a webform and the code will copy/update columns data into SQL. Question: I have an abstract class public abstract class FileImporter whe...
echoCHtml::tag($this->emptyTagName, array('class'=>$this->emptyCssClass),$emptyText); } Renders the empty message when there is no data. renderItems()method abstract public voidrenderItems() Source Code:framework/zii/widgets/CBaseListView.php#306(show) ...