单文档SDI可以建立多视么？

Question

可以建立多视，用ShowWindow(SW_SHOW),或ShowWindow(SW_HIDE)切换。

Answer 1

<<VC技术内幕>>第20章"拆分窗口和多重视图"有例子

Answer 2

我有例子
void CChildFrame::OnViewDesign() 
{
// TODO: Add your command handler code here
CWBuilderDoc * pDoc=(CWBuilderDoc *)this->GetActiveDocument();
if (NULL==m_pDesignView){
m_pSourceView=(CWmlEditView *)GetActiveView();
m_pDesignView=new CWBuilderView();
m_pDesignView->Create(NULL,NULL,AFX_WS_DEFAULT_VIEW,rectDefault,this,AFX_IDW_PANE_FIRST+1,NULL);
}
if ((pDoc->IsModified()==TRUE)  and  and  (pDoc->GetPathName()=="")){
AfxMessageBox("必须首先保存文件!");
return;
}
pDoc->AddView(m_pDesignView);
m_pDesignView->SetDlgCtrlID(AFX_IDW_PANE_FIRST);
m_pSourceView->SetDlgCtrlID(AFX_IDW_PANE_FIRST+1); m_pDesignView->ShowWindow(SW_SHOW);
m_pSourceView->ShowWindow(SW_HIDE); this->SetActiveView(m_pDesignView); pDoc->RemoveView(m_pSourceView);
m_pDesignView->m_card_num=0;
m_pDesignView->m_tree_ctrl.DeleteAllItems();
MSXML::IXMLDocumentPtr xmlDoc;
MSXML::IXMLElementPtr xmlElem;
MSXML::IXMLElementCollectionPtr xmlElemCol;
CoInitialize(NULL);
xmlDoc.CreateInstance(__uuidof(MSXML::XMLDocument));
xmlDoc->url=_bstr_t(pDoc->GetPathName());
while (xmlDoc->readyState!=READYSTATE_COMPLETE);
xmlElem=xmlDoc->root; CString str="<";
str+=xmlElem->tagName;
str+=">";
str+=xmlElem->text; HTREEITEM ti1=m_pDesignView->m_tree_ctrl.InsertItem(str,TVI_ROOT); m_pDesignView->AddSubTree(ti1,xmlElem); xmlElem.Release();
xmlDoc.Release(); for (int i=0;i<=pDoc->m_file_content.GetUpperBound();i++){
CString & str=pDoc->m_file_content.ElementAt(i);
m_pDesignView->m_file_content+=str;
m_pDesignView->m_file_content+=" ";
} while (m_pDesignView->m_file_content.Replace("  "," "));
m_pDesignView->m_file_content.Replace("< ","<");
m_pDesignView->m_file_content.Replace("</ ","</");
m_pDesignView->m_file_content.Replace(" >",">");
int card_start=m_pDesignView->m_file_content.Find("<card");
int card_end=m_pDesignView->m_file_content.Find("</card");
m_pDesignView->m_file_content=m_pDesignView->m_file_content.Mid(card_start,card_end-card_start);
m_pDesignView->m_file_content.Replace("<card","<body");
m_pDesignView->m_file_content+="</body>";
CStdioFile file("c:\\temp.tmp",CFile::modeCreate and CFile::modeWrite);
file.WriteString(m_pDesignView->m_file_content);
file.Close();
m_pDesignView->m_html_view->Navigate("c:\\temp.tmp");
CoUninitialize();
RecalcLayout();
}void CChildFrame::OnViewSource() 
{ 
// TODO: Add your command handler code here
CDocument * pDoc=this->GetActiveDocument(); pDoc->AddView(m_pSourceView);
m_pSourceView->SetDlgCtrlID(AFX_IDW_PANE_FIRST);
m_pDesignView->SetDlgCtrlID(AFX_IDW_PANE_FIRST+1); m_pSourceView->ShowWindow(SW_SHOW);
m_pDesignView->ShowWindow(SW_HIDE); this->SetActiveView(m_pSourceView); pDoc->RemoveView(m_pDesignView);
RecalcLayout();
::CreateCaret(m_pSourceView->m_hWnd,NULL,2,16);
m_pSourceView->ShowCaret();
}void CChildFrame::OnUpdateViewDesign(CCmdUI* pCmdUI) 
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(GetActiveView()->IsKindOf(RUNTIME_CLASS(CWmlEditView)));
}void CChildFrame::OnUpdateViewSource(CCmdUI* pCmdUI) 
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(GetActiveView()->IsKindOf(RUNTIME_CLASS(CWBuilderView)));
}

Answer 3

我有例子
void CChildFrame::OnViewDesign() 
{
// TODO: Add your command handler code here
CWBuilderDoc * pDoc=(CWBuilderDoc *)this->GetActiveDocument();
if (NULL==m_pDesignView){
m_pSourceView=(CWmlEditView *)GetActiveView();
m_pDesignView=new CWBuilderView();
m_pDesignView->Create(NULL,NULL,AFX_WS_DEFAULT_VIEW,rectDefault,this,AFX_IDW_PANE_FIRST+1,NULL);
}
if ((pDoc->IsModified()==TRUE)  and  and  (pDoc->GetPathName()=="")){
AfxMessageBox("必须首先保存文件!");
return;
}
pDoc->AddView(m_pDesignView);
m_pDesignView->SetDlgCtrlID(AFX_IDW_PANE_FIRST);
m_pSourceView->SetDlgCtrlID(AFX_IDW_PANE_FIRST+1); m_pDesignView->ShowWindow(SW_SHOW);
m_pSourceView->ShowWindow(SW_HIDE); this->SetActiveView(m_pDesignView); pDoc->RemoveView(m_pSourceView);
m_pDesignView->m_card_num=0;
m_pDesignView->m_tree_ctrl.DeleteAllItems();
MSXML::IXMLDocumentPtr xmlDoc;
MSXML::IXMLElementPtr xmlElem;
MSXML::IXMLElementCollectionPtr xmlElemCol;
CoInitialize(NULL);
xmlDoc.CreateInstance(__uuidof(MSXML::XMLDocument));
xmlDoc->url=_bstr_t(pDoc->GetPathName());
while (xmlDoc->readyState!=READYSTATE_COMPLETE);
xmlElem=xmlDoc->root; CString str="<";
str+=xmlElem->tagName;
str+=">";
str+=xmlElem->text; HTREEITEM ti1=m_pDesignView->m_tree_ctrl.InsertItem(str,TVI_ROOT); m_pDesignView->AddSubTree(ti1,xmlElem); xmlElem.Release();
xmlDoc.Release(); for (int i=0;i<=pDoc->m_file_content.GetUpperBound();i++){
CString & str=pDoc->m_file_content.ElementAt(i);
m_pDesignView->m_file_content+=str;
m_pDesignView->m_file_content+=" ";
} while (m_pDesignView->m_file_content.Replace("  "," "));
m_pDesignView->m_file_content.Replace("< ","<");
m_pDesignView->m_file_content.Replace("</ ","</");
m_pDesignView->m_file_content.Replace(" >",">");
int card_start=m_pDesignView->m_file_content.Find("<card");
int card_end=m_pDesignView->m_file_content.Find("</card");
m_pDesignView->m_file_content=m_pDesignView->m_file_content.Mid(card_start,card_end-card_start);
m_pDesignView->m_file_content.Replace("<card","<body");
m_pDesignView->m_file_content+="</body>";
CStdioFile file("c:\\temp.tmp",CFile::modeCreate and CFile::modeWrite);
file.WriteString(m_pDesignView->m_file_content);
file.Close();
m_pDesignView->m_html_view->Navigate("c:\\temp.tmp");
CoUninitialize();
RecalcLayout();
}void CChildFrame::OnViewSource() 
{ 
// TODO: Add your command handler code here
CDocument * pDoc=this->GetActiveDocument(); pDoc->AddView(m_pSourceView);
m_pSourceView->SetDlgCtrlID(AFX_IDW_PANE_FIRST);
m_pDesignView->SetDlgCtrlID(AFX_IDW_PANE_FIRST+1); m_pSourceView->ShowWindow(SW_SHOW);
m_pDesignView->ShowWindow(SW_HIDE); this->SetActiveView(m_pSourceView); pDoc->RemoveView(m_pDesignView);
RecalcLayout();
::CreateCaret(m_pSourceView->m_hWnd,NULL,2,16);
m_pSourceView->ShowCaret();
}void CChildFrame::OnUpdateViewDesign(CCmdUI* pCmdUI) 
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(GetActiveView()->IsKindOf(RUNTIME_CLASS(CWmlEditView)));
}void CChildFrame::OnUpdateViewSource(CCmdUI* pCmdUI) 
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(GetActiveView()->IsKindOf(RUNTIME_CLASS(CWBuilderView)));
}

Answer 4

单文档多视的问题,我在前两天刚作了一个例子:
首先在应有程序类中声明:
      CView *pOldView;
      CView *pNewView;
然后在实现文件中的 ProcessShellCommand()后加入
   CView* pActiveView = ((CFrameWnd*)m_pMainWnd)->GetActiveView();
m_pOldView = pActiveView; //保存旧视
m_pNewView = (CView*) new CTrainForm; //新视
CDocument* pCurrentDoc=
             ((CFrameWnd*)m_pMainWnd)->GetActiveDocument();//取得活动文档
 /* 初始化CCreateContext对象，使其指向活动文档。用它为文档增加在
                 CView::OnCreate()函数中生成的新视 */
CCreateContext newContext;
newContext.m_pNewViewClass = NULL;
newContext.m_pNewDocTemplate = NULL;
newContext.m_pLastView = NULL;
newContext.m_pCurrentFrame = NULL;
newContext.m_pCurrentDoc = pCurrentDoc; //指向活动文档
// 初始活动视的ID为AFX_IDW_PANE_FIRST，该值按1递增赋予新视
UINT viewID = AFX_IDW_PANE_FIRST + 1;

// 创建新视
CRect rect(0, 0, 0, 0);  //注意初始化参数为0
m_pNewView->Create(NULL, "AnyWindowName", WS_CHILD, rect,       m_pMainWnd, viewID, &newContext);
//发送WM_INITIALUPDATE消息
m_pNewView->SendMessage(WM_INITIALUPDATE, 0, 0);然后在利用函数 SwitchView(CView * pNewView)来实现切换
它的定以为:
   CView* CHhApp::SwitchView(CView * pNewView)
{
   //取得活动视
   CView* pActiveView = ((CFrameWnd*) m_pMainWnd)->GetActiveView();
          
          //交换视窗口的标识
   #ifndef _WIN32 //不是Win32应用，注意使用函数为Word型
   UINT temp =::GetWindowWord(pActiveView->m_hWnd, GWW_ID);
   ::SetWindowWord(pActiveView->m_hWnd, GWW_ID,
                  ::GetWindowWord(pNewView->m_hWnd, GWW_ID));
   ::SetWindowWord(pNewView->m_hWnd, GWW_ID, temp);
   #else //不是Win32应用，注意使用函数为Long型
   UINT temp =::GetWindowLong(pActiveView->m_hWnd, GWL_ID);
   ::SetWindowLong(pActiveView->m_hWnd, GWL_ID,
                  ::GetWindowLong(pNewView->m_hWnd, GWL_ID));
   ::SetWindowLong(pNewView->m_hWnd, GWL_ID, temp);
   #endif
   pActiveView->ShowWindow(SW_HIDE); //将当前视图隐藏
   pNewView->ShowWindow(SW_SHOW); //显示新视图
   ((CFrameWnd*) m_pMainWnd)->SetActiveView(pNewView); //设置新视图为活动视图
   ((CFrameWnd*) m_pMainWnd)->RecalcLayout(); //重新布局
   pNewView->Invalidate(); //重绘
   return pActiveView; //返回活动视
}