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

GetFirstDocPosition

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);
}
}