IskindOf(.......)什么用
IskindOf(.......)什么用。 问题点数：20、回复次数：3Top
1 楼friendmine（亚东）回复于 2002-10-09 08:23:02 得分 15
来判断是不是某个类的实例或是其派生类的实例
class b;
class c : public b;
class d : bpulic c;
d a = new d();
d.Iskingof(b)? the answer is TRUETop
2 楼rivershan（阿门）回复于 2002-10-09 08:26:57 得分 5
CObject::IsKindOf
BOOL IsKindOf( const CRuntimeClass* pClass ) const;
Return Value
Nonzero if the object corresponds to the class; otherwise 0.
Parameters
pClass
A pointer to a CRuntimeClass structure associated with your CObject-derived class.
Remarks
Tests pClass to see if (1) it is an object of the specified class or (2) it is an object of a class derived from the specified class. This function works only for classes declared with the DECLARE_DYNAMIC or DECLARE_SERIAL macro.
Do not use this function extensively because it defeats the C++ polymorphism feature. Use virtual functions instead.
Example
See CObList::CObList for a listing of the CAge class used in all CObject examples.
// example for CObject::IsKindOf
CAge a(21); // Must use IMPLEMENT_DYNAMIC or IMPLEMENT_SERIAL
ASSERT( a.IsKindOf( RUNTIME_CLASS( CAge ) ) );
ASSERT( a.IsKindOf( RUNTIME_CLASS( CObject ) ) );
CObject Overview | Class Members | Hierarchy Chart
See Also CObject::GetRuntimeClass, RUNTIME_CLASS,CObject Class: Accessing Run-Time Class Information
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3 楼he_zhidan（何志丹:www.dzlishi.net,www.vcshare.net）回复于 2002-10-09 08:37:15 得分 0
请不要用英文。Top
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