cobject和cruntimeclass是mfc中两个非常重要的类/结构,绝大部分mfc类都是以cobject做为基类, cruntimeclass结构同cobject密不可分,了解它们对于深入理解mfc具有重要意义。 一、cruntimeclass结构 要理解cobject,我们先来看一下cruntimeclass这个在mfc中至关重要的一个结构。 每个从cobject中派生的类都有有一个...
搜尋 Using CObject Deriving a Class from CObject Accessing Run-Time Class Information Dynamic Object Creation CObject Class: Frequently Asked Questions CObject Class: Frequently Asked Questions Do I Have to Derive New Classes from CObject? What Does it Cost me to Derive a Class from CObject?
在运行时判断类信息时,就可以通过类的CRuntimeClass静态变量来进行对比,从而判断出该类是否是相应的类型,这便是CObject中接口函数IsKindOf函数的作用,其实现类似于下面的过程: BOOL CObject::IsKindOf(constCRuntimeClass*pClass)const { CRuntimeClass*pClassThis=GetRuntimeClass(); while(pClassThis!=NULL) { ...
Your derived classes can have only one CObject base class, and that CObject must be leftmost in the hierarchy. It is permissible, however, to have structures and non-CObject-derived classes in right-hand multiple-inheritance branches. You will realize major benefits from CObject derivation if ...
/// A pointer to an instance of a class.typedefstructobjc_object *id; 就像注释中所说的这样 id 是指向一个objc_object结构体的指针。 id 这个struct的定义本身就带了一个 *, 所以我们在使用其他NSObject类型的实例时需要在前面加上 *, 而使用 id 时却不用。
Inheritance Object ObjectCache Derived System.Runtime.Caching.MemoryCache Implements IEnumerable<KeyValuePair<String,Object>> IEnumerable RemarksThe ObjectCache type is the primary type for the in-memory object cache. To develop a custom cache implementation, you derive from the ObjectCache class....
public:virtualvoidSetInner(Platform::Object ^ punkInner)= Microsoft::VisualStudio::ProjectAggregator::IVSProjectAggregator::SetInner; Parameters punkInner Object The inner project. Implements SetInner(Object) Applies to 产品版本 Visual Studio SDK2015, 2017, 2019, 2022...
set_dd_tablespace_encrypted() : dd::Object_table_definition_impl set_dd_upgrade_done() : dd::bootstrap::DD_bootstrap_ctx set_ddl() : Clone_file_ctx set_ddl_abort() : Clone_Handle set_debug() : LO_class, LO_node set_debug_options() : Gcs_debug_options, Gcs_operations set_decimal...
class CPrivateObjectSecurityDesc : public CSecurityDesc RemarksThis class, derived from CSecurityDesc, provides methods for creating and managing the security descriptor of a private object.For an introduction to the access control model in Windows, see Access Control in the Windows SDK.RequirementsHe...
usingSystem;usingSystem.Collections.Generic;usingSystem.Text;usingMicrosoft.Build.BuildEngine;namespaceBuildAProjectCS{classProgram{staticvoidMain(string[] args){// Instantiate a new Engine objectEngine engine =newEngine();// Point to the path that contains the .NET Framework 2.0 CLR and toolsengine...