IMPLEMENT_DYNCREATE是什么意思

IMPLEMENT_DYNCREATE(CFutureQuantSingleDoc, CDocument)

进行展开

#define IMPLEMENT_DYNCREATE(class_name, base_class_name) \
	CObject* PASCAL class_name::CreateObject() \
		{ return new class_name; } \
	IMPLEMENT_RUNTIMECLASS(class_name, base_class_name, 0xFFFF, \
		class_name::CreateObject, NULL)

而进一步的 IMPLEMENT_RUNTIMECLASS 展开

#ifdef _AFXDLL
#define IMPLEMENT_RUNTIMECLASS(class_name, base_class_name, wSchema, pfnNew, class_init) \
	CRuntimeClass* PASCAL class_name::_GetBaseClass() \
		{ return RUNTIME_CLASS(base_class_name); } \
	AFX_COMDAT const CRuntimeClass class_name::class##class_name = { \
		#class_name, sizeof(class class_name), wSchema, pfnNew, \
			&class_name::_GetBaseClass, NULL, class_init }; \
	CRuntimeClass* PASCAL class_name::GetThisClass() \
		{ return _RUNTIME_CLASS(class_name); } \
	CRuntimeClass* class_name::GetRuntimeClass() const \
		{ return _RUNTIME_CLASS(class_name); }