Win32 框架文档视图(3)

5.19 如何实现滚动视图

其功能类似于WPF的ScrollViewer,具备滚动条

void CDemoView::OnInitialUpdate()
{
    CScrollView::OnInitialUpdate();

    //滚动视图的尺寸
    CSize sizeTotal;
    sizeTotal.cx = 800;
    sizeTotal.cy = 600;    
    //滚动条的页尺寸
    CSize sizePage;
    sizePage.cx = 50;
    sizePage.cy = 50;
    //滚动条的行尺寸
    CSize sizeLine;
    sizeLine.cx = 10;
    sizeLine.cy = 10;

    //设置滚动视图尺寸
    SetScrollSizes(MM_TEXT, sizeTotal, sizePage, sizeLine);
}

5.20 如何使用列表视图

CListView

void CDemoView::InitList()
{
    //获得列表控件的指针
    CListCtrl* pList = &GetListCtrl();

    //设置列表视图的报表显示方式
    pList->ModifyStyle(LVS_ICON | LVS_SMALLICON | LVS_LIST, LVS_REPORT);

    //设置列表视图显示网格线和整行选中
    pList->SetExtendedStyle(LVS_EX_GRIDLINES | LVS_EX_FULLROWSELECT);

    //在列表视图中插入列
    for (int n = 0; n < 4; n++)
    {
        CString strColumnHeading = _T("");
        strColumnHeading.Format(_T("Column %d"), n);
        pList->InsertColumn(n, strColumnHeading, LVCFMT_LEFT, 100);
    }

    //在列表视图中插入行
    for (int m = 0; m < 10; m++)
    {
        CString strItem = _T("");
        strItem.Format("Item %d", m);
        pList->InsertItem(m, strItem);

        for (int n = 1; n < 4; n++)
        {
            CString strText = _T("");
            strText.Format(_T("SubItem %d %d"), m, n);
            pList->SetItemText(m, n, strText);
        }
    }
}

5.21 如何使用树视图

CTreeView

void CDemoView::InitTree()
{
    //获得数控件
    CTreeCtrl* pTree = &GetTreeCtrl();

    //为树添加连线和按钮
    pTree->ModifyStyle(0, TVS_HASLINES | TVS_LINESATROOT | TVS_HASBUTTONS);

    CString strText = _T("");

    //在树中插入项
    HTREEITEM hRoot = pTree->InsertItem(_T("Root"));

    for (int i = 0; i < 4; i++)
    {
        strText.Format(_T("Item %d"), i);

        //在树中插入项
        HTREEITEM hParent = pTree->InsertItem(strText, hRoot);

        for(int j = 0; j < 5; j++)
        {
            strText.Format(_T("SubItem %d %d"), i, j);

            //在树中插入项
            pTree->InsertItem(strText, hParent);
        }

        //展开树项
        pTree->Expand(hParent, TVE_EXPAND);    
    }

    //展开树项
    pTree->Expand(hRoot, TVE_EXPAND);

    //选择树项
    pTree->Select(hRoot, TVGN_CARET);
}

5.22 如何实现HTML视图

CHtmlView

void CDemoView::OnNavigate()
{
    CMainFrame* pMainFrame = (CMainFrame *)AfxGetMainWnd();
    CDialogBar* pDialogBar = &(pMainFrame->m_wndDlgBar);

    CString strAddress = _T("");
    pDialogBar->GetDlgItemText(IDC_ADDRESS, strAddress);

    //浏览
    Navigate2(strAddress);

    Invalidate(FALSE);    
}

void CDemoView::OnGoBack()
{
    //后退
    GoBack();
}

void CDemoView::OnGoForward()
{
    //前进
    GoForward();
}

void CDemoView::OnStop()
{
    //停止
    Stop();
}

void CDemoView::OnRefresh()
{
    //刷新
    Refresh();
}

5.23 如何在视图中获得文档指针

GetDocument方法

void CDemoView::OnTest() 
{
    //获得文档指针
    CDemoDoc* pDoc = GetDocument();
    if (pDoc == NULL)
    {
        return;
    }

    CRect rect;
    GetClientRect(rect);
    CString strText = _T("");
    strText.Format(_T("在视图中获得文档指针：0x%08X"), pDoc);
    CDC* pDC = GetDC();
    pDC->SetTextAlign(TA_CENTER);
    pDC->TextOut(rect.Width() / 2, rect.Height() / 2, strText);
}

5.24 如何在框架中获得当前视图指针

GetActiveView方法

void CMainFrame::OnTest() 
{
    //获得当前子框架
    CMDIChildWnd* pChildFrame = (CMDIChildWnd*)GetActiveFrame();
    if (pChildFrame == NULL)
    {
        return;
    }

    //获得当前视图
    CDemoView* pView = (CDemoView*)pChildFrame->GetActiveView();
    if (pView == NULL)
    {
        return;
    }

    CRect rect;
    pView->GetClientRect(rect);
    CString strText = _T("");
    strText.Format(_T("在框架中获得当前视图指针：0x%08X"), pView);
    CDC* pDC = pView->GetDC();
    pDC->SetTextAlign(TA_CENTER);
    pDC->TextOut(rect.Width() / 2, rect.Height() / 2, strText);
}

5.25 如何在框架中获得当前文档指针

GetActiveDocument方法

void CMainFrame::OnTest() 
{
    //获得当前子框架
    CMDIChildWnd* pChildFrame = (CMDIChildWnd*)GetActiveFrame();
    if (pChildFrame == NULL)
    {
        return;
    }

    //获得当前视图
    CDemoView* pView = (CDemoView*)pChildFrame->GetActiveView();
    if (pView == NULL)
    {
        return;
    }

    //获得当前文档
    CDemoDoc* pDoc = (CDemoDoc*)pChildFrame->GetActiveDocument();
    if (pDoc == NULL)
    {
        return;
    }

    CRect rect;
    pView->GetClientRect(rect);
    CString strText = _T("");
    strText.Format(_T("在框架中获得当前文档指针：0x%08X"), pDoc);
    CDC* pDC = pView->GetDC();
    pDC->SetTextAlign(TA_CENTER);
    pDC->TextOut(rect.Width() / 2, rect.Height() / 2, strText);
}

5.26 如何新建或打开文档

OpenDocumentFile方法

void CDemoApp::OnTest1() 
{
    //新建文档
    m_pDocTemplate->OpenDocumentFile(NULL);    
}

void CDemoApp::OnTest2() 
{
    CString strPathName = _T("");

    //文件对话框
    CString strFilter = _T("所有文件(*.*)|*.*||");
    CFileDialog dlg(TRUE, NULL, NULL, OFN_HIDEREADONLY | 
        OFN_OVERWRITEPROMPT, strFilter);
    dlg.m_ofn.lpstrTitle = _T("浏览文件");
    if(dlg.DoModal() == IDOK)
    {
        strPathName = dlg.GetPathName();
    }

    //打开文档
    m_pDocTemplate->OpenDocumentFile(strPathName);
}

5.27 如何创建新的框架窗口

CreateNewFrame方法

void CMainFrame::OnTest() 
{
    CDemoApp* pApp = (CDemoApp*)AfxGetApp();
    if (pApp == NULL)
    {
        return;
    }
    CMultiDocTemplate* pDocTemplate = pApp->m_pDocTemplate;
    CDocument* pDoc = pApp->m_pDoc;
    
    //创建新框架窗口
    CFrameWnd* pFrame = pDocTemplate->CreateNewFrame(pDoc, NULL);
    if (pFrame == NULL)
    {
        return;
    }
    //初始化框架窗口
    pDocTemplate->InitialUpdateFrame(pFrame, pDoc);
}

5.28 如何实现单文档－多视图结构

//创建文档模板1
CMultiDocTemplate* pDocTemplate1;
pDocTemplate1 = new CMultiDocTemplate(
    IDR_DEMOTYPE,
    RUNTIME_CLASS(CDemoDoc),
    RUNTIME_CLASS(CChildFrame),
    RUNTIME_CLASS(CDemoView1));
AddDocTemplate(pDocTemplate1);

//创建文档模板2
CMultiDocTemplate* pDocTemplate2;
pDocTemplate2 = new CMultiDocTemplate(
    IDR_DEMOTYPE,
    RUNTIME_CLASS(CDemoDoc),
    RUNTIME_CLASS(CChildFrame),
    RUNTIME_CLASS(CDemoView2));
AddDocTemplate(pDocTemplate2);

CMainFrame* pMainFrame = new CMainFrame;
if (!pMainFrame->LoadFrame(IDR_MAINFRAME))
    return FALSE;
m_pMainWnd = pMainFrame;

//文档模板1新建一个文档
CDemoDoc* pDoc = (CDemoDoc*)pDocTemplate1->OpenDocumentFile(NULL);
if (pDoc == NULL)
{
    return FALSE;
}

//文档模板2创建与文档相关联的框架窗口
CFrameWnd* pFrame = pDocTemplate2->CreateNewFrame(pDoc, NULL);
if (pFrame == NULL)
{
    return FALSE;
}
//文档模板2初始化框架窗口
pDocTemplate2->InitialUpdateFrame(pFrame, pDoc);

pMainFrame->ShowWindow(m_nCmdShow);
pMainFrame->UpdateWindow();

//水平排列窗口
pMainFrame->MDITile(MDITILE_HORIZONTAL);

5.29 如何在文档模板中遍历文档

1. GetFirstDocPosition
2. GetNextDoc

void CDemoApp::OnTest() 
{
    int n = 0;

    //获得第一个文档的位置
    POSITION pos1 = m_pDocTemplate->GetFirstDocPosition();
    while(pos1 != NULL)
    {
        n++;

        //获得下一个文档
        CDocument* pDoc = m_pDocTemplate->GetNextDoc(pos1);
        //更新视图
        pDoc->UpdateAllViews(NULL, n);
    }
}

5.30 如何在应用程序中遍历文档模板

同上类似

void CDemoApp::OnTest() 
{
    int n = 0;

    //获得第一个文档模板的位置
    POSITION pos1 = GetFirstDocTemplatePosition();
    while(pos1 != NULL)
    {
        n++;

        //获得下一个文档模板
        CDocTemplate* pDocTemplate = GetNextDocTemplate(pos1);
        if (pDocTemplate == NULL)
        {
            continue;
        }

        //获得第一个文档的位置
        POSITION pos2 = pDocTemplate->GetFirstDocPosition();
        while(pos2 != NULL)
        {
            //获得下一个文档
            CDocument* pDoc = pDocTemplate->GetNextDoc(pos2);

            //更新视图
            pDoc->UpdateAllViews(NULL, n);
        }
    }
}

5.31 如何在文档中遍历视图

也同上比较相似,就是名字发生了变化

void CDemoDoc::OnTest() 
{
    int n = 0;
    
    //获得第一个视图的位置
    POSITION pos = GetFirstViewPosition();
    while(pos != NULL) 
    {
        n++;

        //获得下一个视图
        CView* pView = GetNextView(pos);
        if (pView == NULL)
        {
            continue;
        }
        
        CRect rect;
        pView->GetClientRect(rect);
        CString strText = _T("");
        strText.Format(_T("视图%d"), n);
        CDC* pDC = pView->GetDC();
        pDC->SetTextAlign(TA_CENTER);
        pDC->TextOut(rect.Width() / 2, rect.Height() / 2, strText);
    }
}