MFC多文档程序启动时一个文档创建两个视图

1.在App类中创建两个public变量：

CMultiDocTemplate * m_pDocTemplate;

CMultiDocTemplate * m_pNewDocTemplate;

2.在App类中的Initlnstance()函数中添加以后程序：

m_pDocTemplate = new CMultiDocTemplate(
  IDR_MULTIDTYPE,
  RUNTIME_CLASS(CMultiDocumentStudyDoc),
  RUNTIME_CLASS(CChildFrame), // custom MDI child frame
  RUNTIME_CLASS(CMultiDocumentStudyView));
 AddDocTemplate(m_pDocTemplate);

 //CMultiDocTemplate * pNewDocTemplate;
 m_pNewDocTemplate = new CMultiDocTemplate(
  IDR_MULTIDTYPE,
  RUNTIME_CLASS(CMultiDocumentStudyDoc),
  RUNTIME_CLASS(CChildFrame), // custom MDI child frame
  RUNTIME_CLASS(CNewView));
 AddDocTemplate(m_pNewDocTemplate);
3.重载OnFileNew函数（App类中），默认只打开一个视图：

m_pDocTemplate->OpenDocumentFile(NULL);

4.在Doc类中重载OnNewDocument()函数

 CMultiDocumentStudyApp*p_app = (CMultiDocumentStudyApp*)AfxGetApp();
 EkCreateNewWindow(p_app->m_pNewDocTemplate, this ); 

 

CFrameWnd* CMultiDocumentStudyDoc::EkCreateNewWindow( CDocTemplate* pTemplate,CDocument* pDocument )
{
 ASSERT_VALID( pTemplate );  
    ASSERT_VALID( pDocument );  
    CFrameWnd* pFrame =   
  pTemplate->CreateNewFrame(pDocument, NULL );
 CRect rect;
 GetClientRect(pFrame->m_hWnd,&rect);
 pFrame->MoveWindow(100,150,rect.Width(),rect.Height());
    if( pFrame == NULL )  
    {TRACE0( "Warning: failed to create new frame.\n" );  
    return NULL;  
    }  
    ASSERT_KINDOF( CFrameWnd, pFrame );  
    pTemplate->InitialUpdateFrame( pFrame, pDocument );  
 
    return pFrame;  

}