c++文件浏览器 voidCLeftView::OnInitialUpdate() { CTreeView::OnInitialUpdate(); CRuntimeClass*prc=RUNTIME_CLASS(CLeftView); BOOLb=prc->IsDerivedFrom(RUNTIME_CLASS
mfc经典案例 voidCLeftView::OnInitialUpdate(){CTreeView::OnInitialUpdate();CRuntimeClass*prc=RUNTIME_CLASS(CLeftView);BOOLb=prc->IsDerivedFrom(RUNTIME_CLASS(CDC));