这里的数组就是虚函数表(Virtual function table),简写为vtable。 我们以下面的继承关系为例进行讲解: #include <iostream> #include <string> using namespace std; //People类*** class People{ public: People(string name, int age); public: virtual void display(); virtual void eating(); protected: ...
“virtual function pointers”也就是我们之前理解的虚函数表,其中存放着虚函数指针列表。 前一节的示例是单继承的示例,下面列出了一个多继承的示例: 从中可以看到:D的虚表中包含两个虚表结构,第一个也称之为“主虚表”(primary virtual table),另一个虚表又称之为“次虚表”(secondary virtual table)。 简单地...
对C++了解的人都应该知道虚函数(Virtual Function)是通过一张虚函数表(Virtual Table)来实现的。简称为V-Table。在这个表中,主是要一个类的虚函数的地址表,这张表解决了继承、覆盖的问题,保证其容真实反应实际的函数。这样,在有虚函数的类的实例中这个表被分配在了这个实例的内存中,所以,当我们用父类的指针来...
在C++语言中,如果某个类有虚函数,那么大多数编译器都会自动的为其对象维护一个隐藏的“虚指针(virtul-pointer)”,虚指针指向一个全局“虚表(virtual-table)”,虚表中存放若干函数指针,这些函数指针指向类中的虚函数。请看下面这段C++语言代码: 显然,类 A 有两个常规函数以及两个 int 型的成员变量,此外,它还有...
这将打印出my_virtual_function的vtable地址。 使用x命令查看vtable的内容,例如: 代码语言:txt 复制 x 0x12345678 这将显示vtable中的内容,包括虚拟函数指针。 使用info vtbl命令查看更详细的vtable信息,例如: 代码语言:txt 复制 info vtbl my_object 这将显示vtable的详细信息,包括虚拟函数名称和地址。 使用...
If it has a virtual function but it doesn't have a base class that has a virtual function, the object model of the compiler inserts a pointer to a virtual function table after the data member layout. This means the layout may not be optimal in all cases. In previous releases, an ...
If it has a virtual function but it doesn't have a base class that has a virtual function, the object model of the compiler inserts a pointer to a virtual function table after the data member layout. This means the layout may not be optimal in all cases. In previous releases, an ...
CWnd::WindowProc - override function DataTable.Load is too slow DDE example c++ DDE server how to implement c++ ? DDE Spy and monitoring DDE messages on a machine Debug Assertion Failed Debug Assertion Failed - Expression: _BLOCK_TYPE_IS_VALID Debug assertion failed error message Debug Assertion...
Expand table ErrorMessage Compiler error C2200'function': function has already been defined Compiler error C2201'identifier': must have external linkage in order to be exported/imported Compiler error C2202'function': not all control paths return a value ...
In general, when an object has a virtual function table (a vtable) in it, dbx can use the information in the vtable to correctly determine an object's type. You can use the print or display command with the -r (recursive) option. dbx displays all the data members directly defined by ...