在函数BOOL CreateView( int row, int col, CRuntimeClass* pViewClass, SIZE sizeInit, CCreateContext* pContext );
中，有一个参数CCreateContext* pContext，里面有当前的document的指针
而在CView的OnCreate中：
// if ok, wire in the current document
ASSERT(m_pDocument == NULL);
CCreateContext* pContext = (CCreateContext*)lpcs->lpCreateParams;
// A view should be created in a given context!
if (pContext != NULL && pContext->m_pCurrentDoc != NULL)
{
pContext->m_pCurrentDoc->AddView(this);
ASSERT(m_pDocument != NULL);
}
就是在这里调用AddView的。
ok，that's it.
