MFC同源子窗口的实现

         MFC里的静态拆分窗口是一种很有意思的效果,但它们毕竟不是独立的窗口,还框在一个大窗口中, 那么要使用真正完全独立的窗口怎么做呢?本文参考侯捷的《深入浅出MFC》的第13章的思路,实现了多个独立的视图窗口,代码如下:

class CCY457App : public CWinApp
{
public:
    CCY457App();
    CMultiDocTemplate
* m_pTemplate_ch3;
    CMultiDocTemplate
* m_pTemplate_ch4;
// 重写
public:
    
virtual BOOL InitInstance();
    
virtual int ExitInstance();
// 实现
    afx_msg void OnAppAbout();
    DECLARE_MESSAGE_MAP()
};

BOOL CCY457App::InitInstance()
{
    ……
    CMultiDocTemplate
* pDocTemplate;
    pDocTemplate 
= new CMultiDocTemplate(IDR_CY457TYPE,
        RUNTIME_CLASS(CCY457Doc),
        RUNTIME_CLASS(CChildFrame), 
// 自定义MDI 子框架
        RUNTIME_CLASS(CCY457View));
    
if (!pDocTemplate)
        
return FALSE;
    AddDocTemplate(pDocTemplate);
    m_pTemplate_ch3 
= new CMultiDocTemplate(IDR_CY457TYPE,
        RUNTIME_CLASS(CCY457Doc),
        RUNTIME_CLASS(CChildFrame), 
// 自定义MDI 子框架2
        RUNTIME_CLASS(CCY457View_ch3));
    m_pTemplate_ch4 
= new CMultiDocTemplate(IDR_CY457TYPE,
        RUNTIME_CLASS(CCY457Doc),
        RUNTIME_CLASS(CChildFrame), 
// 自定义MDI 子框架3
        RUNTIME_CLASS(CCY457View_ch4));
……
    
return TRUE;
}

int CCY457App::ExitInstance()
{
    delete m_pTemplate_ch3;
    delete m_pTemplate_ch4;
    
return CWinApp::ExitInstance();
}

 


void CMainFrame::OnOpenglCh3()
{
// 打开第一个视图
    CMDIChildWnd* pActiveChild = MDIGetActive();
    CDocument
* pDocument;
    
if (pActiveChild==NULL || (pDocument = pActiveChild->GetActiveDocument())==NULL)
    {
        TRACE0(
"warning: No active document\n");
        AfxMessageBox(AFX_IDP_COMMAND_FAILURE);
        
return;
    }

    CDocTemplate
* pTemplate = ((CCY457App*)AfxGetApp())->m_pTemplate_ch3;
    ASSERT_VALID(pTemplate);
    CFrameWnd
* pFrame = pTemplate->CreateNewFrame(pDocument,pActiveChild);
    
if (pFrame==NULL)
    {
        TRACE0(
"warning: failure to create new frame\n");
        AfxMessageBox(AFX_IDP_COMMAND_FAILURE);
        
return;
    }
    pTemplate
->InitialUpdateFrame(pFrame,pDocument);}

void CMainFrame::OnOpenglCh4()
{
// 打开第二个视图
    CMDIChildWnd* pActiveChild = MDIGetActive();
    CDocument
* pDocument;
    
if (pActiveChild==NULL || (pDocument = pActiveChild->GetActiveDocument())==NULL)
    {
        TRACE0(
"warning: No active document\n");
        AfxMessageBox(AFX_IDP_COMMAND_FAILURE);
        
return;
    }

    CDocTemplate
* pTemplate = ((CCY457App*)AfxGetApp())->m_pTemplate_ch4;
    ASSERT_VALID(pTemplate);
    CFrameWnd
* pFrame = pTemplate->CreateNewFrame(pDocument,pActiveChild);
    
if (pFrame==NULL)
    {
        TRACE0(
"warning: failure to create new frame\n");
        AfxMessageBox(AFX_IDP_COMMAND_FAILURE);
        
return;
    }
    pTemplate
->InitialUpdateFrame(pFrame,pDocument);
}

posted on 2008-11-12 19:05  Phinecos(洞庭散人)  阅读(1564)  评论(1编辑  收藏  举报

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