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;

}