二、编程步骤
1、启动Visual C++6.0生成一个多文档应用程序Viewex，并添加支持分割的各个视图类；
2、修改CViewExApp::InitInstance()函数，为应用程序添加多文档视图结构模板的支持；
3、添加代码，编译运行程序。
三、编程步骤
////////////////////////////////////////////////
BOOL CViewExApp::InitInstance()
{
……………………………
// simple text output view
AddDocTemplate(new CMultiDocTemplate(IDR_TEXTTYPE,
RUNTIME_CLASS(CMainDoc),
RUNTIME_CLASS(CMDIChildWnd),
RUNTIME_CLASS(CTextView)));
// simple color output view
AddDocTemplate(new CMultiDocTemplate(IDR_COLORTYPE,
RUNTIME_CLASS(CMainDoc),
RUNTIME_CLASS(CMDIChildWnd),
RUNTIME_CLASS(CColorView)));
// form view with input
AddDocTemplate(new CMultiDocTemplate(IDR_INPUTTYPE,
RUNTIME_CLASS(CMainDoc),
RUNTIME_CLASS(CMDIChildWnd),
RUNTIME_CLASS(CInputView)));
// splitter frame with both simple text output and form input view
AddDocTemplate(new CMultiDocTemplate(IDR_SPLIT2TYPE,
RUNTIME_CLASS(CMainDoc),
RUNTIME_CLASS(CSplitterFrame),
RUNTIME_CLASS(CTextView)));
// 3-way splitter frame with form input, text output and color output views
AddDocTemplate(new CMultiDocTemplate(IDR_SPLIT3TYPE,
RUNTIME_CLASS(CMainDoc),
RUNTIME_CLASS(C3WaySplitterFrame),
RUNTIME_CLASS(CInputView)));
CMDIFrameWnd* pMainFrame = new CMDIFrameWnd;
if (!pMainFrame->LoadFrame(IDR_MAINFRAME))
return FALSE;
// Now finally show the main menu
pMainFrame->ShowWindow(m_nCmdShow);
pMainFrame->UpdateWindow();
m_pMainWnd = pMainFrame;
OnFileNew();
return TRUE;
}
//////////////////////////////////////////CinputView类的头文件
class CInputView : public CFormView
{
DECLARE_DYNCREATE(CInputView)
protected:
CInputView(); // protected constructor used by dynamic creation
// Form Data
public:
//{{AFX_DATA(CInputView)
enum { IDD = IDD_INPUTFORM };
CString m_strData;
int m_iColor;
//}}AFX_DATA
// Attributes
public:
CMainDoc* GetDocument()
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMainDoc)));
return (CMainDoc*) m_pDocument;
}
// Operations
public:
// Implementation
protected:
virtual ~CInputView();
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
virtual void OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint);
// Generated message map functions
//{{AFX_MSG(CInputView)
afx_msg void OnDataChange();
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
/////////////////////////////////////////// CInputView类实现文件
#include "stdafx.h"
#include "viewex.h"
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
IMPLEMENT_DYNCREATE(CInputView, CFormView)
CInputView::CInputView()
: CFormView(CInputView::IDD)
{
//{{AFX_DATA_INIT(CInputView)
m_strData = "";
m_iColor = -1;
//}}AFX_DATA_INIT
}
CInputView::~CInputView()
{}
void CInputView::OnUpdate(CView*, LPARAM, CObject*)
{
CMainDoc* pDoc = GetDocument();
m_strData = pDoc->m_strData;
if (pDoc->m_colorData == RGB(255, 0, 0))
m_iColor = 0;
else if (pDoc->m_colorData == RGB(0, 255, 0))
m_iColor = 1;
else if (pDoc->m_colorData == RGB(0, 0, 255))
m_iColor = 2;
else
m_iColor = -1;
TRACE2("OnUpdate: m_iColor = %d ($%lx)/n", m_iColor, pDoc->m_colorData);
UpdateData(FALSE); // set the data into the controls
}
void CInputView::DoDataExchange(CDataExchange* pDX)
{
CFormView::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CInputView)
DDX_Text(pDX, IDC_EDIT1, m_strData);
DDX_Radio(pDX, IDC_RADIO1, m_iColor);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CInputView, CFormView)
//{{AFX_MSG_MAP(CInputView)
ON_EN_CHANGE(IDC_EDIT1, OnDataChange)
ON_BN_CLICKED(IDC_RADIO1, OnDataChange)
ON_BN_CLICKED(IDC_RADIO2, OnDataChange)
ON_BN_CLICKED(IDC_RADIO3, OnDataChange)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
void CInputView::OnDataChange()// CInputView message handlers
{
if (!UpdateData())
return;
CMainDoc* pDoc = GetDocument();
COLORREF color = RGB(255 * (m_iColor == 0),
255 * (m_iColor == 1),
255 * (m_iColor == 2));
BOOL bUpdate = FALSE;
if (m_strData != pDoc->m_strData)
{
pDoc->m_strData = m_strData;
bUpdate = TRUE;
}
if (color != pDoc->m_colorData)
{
pDoc->m_colorData = color;
bUpdate = TRUE;
}
if (bUpdate)
{
// if the document stored data then we would call SetModifiedFlag here
pDoc->UpdateAllViews(this);
}
}
/////////////////////////////////////////////////////simpvw.h文件
class CTextView : public CView
{
protected: // create from serialization only
CTextView();
DECLARE_DYNCREATE(CTextView)
// Attributes
public:
CMainDoc* GetDocument()
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMainDoc)));
return (CMainDoc*) m_pDocument;
}
// Operations
public:
// Implementation
public:
virtual ~CTextView();
virtual void OnDraw(CDC* pDC); // overridden to draw this view
// Generated message map functions
protected:
//{{AFX_MSG(CTextView)
afx_msg int OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT message);
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
class CColorView : public CView
{
protected: // create from serialization only
CColorView();
DECLARE_DYNCREATE(CColorView)
// Attributes
public:
CMainDoc* GetDocument()
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMainDoc)));
return (CMainDoc*) m_pDocument;
}
// Operations
public:
// Implementation
public:
virtual ~CColorView();
virtual void OnDraw(CDC* pDC); // overridden to draw this view
virtual void OnActivateView(BOOL bActivate, CView* pActivateView,
CView* pDeactiveView);
// Generated message map functions
protected:
//{{AFX_MSG(CColorView)
afx_msg int OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT message);
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
////////////////////////////////simpvw.cpp文件；
#include "stdafx.h"
#include "viewex.h"
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
/////////////////////////CTextView
IMPLEMENT_DYNCREATE(CTextView, CView)
BEGIN_MESSAGE_MAP(CTextView, CView)
//{{AFX_MSG_MAP(CTextView)
ON_WM_MOUSEACTIVATE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
// CTextView construction/destruction
CTextView::CTextView()
{}
CTextView::~CTextView()
{}
void CTextView::OnDraw(CDC* pDC)
{
CMainDoc* pDoc = GetDocument();
CRect rect;
GetClientRect(rect);
pDC->SetTextAlign(TA_BASELINE | TA_CENTER);
pDC->SetTextColor(pDoc->m_colorData);
pDC->SetBkMode(TRANSPARENT);
// center in the window
pDC->TextOut(rect.Width() / 2, rect.Height() / 2,
pDoc->m_strData, pDoc->m_strData.GetLength());
}
int CTextView::OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT message)
{
// side-step CView's implementation since we don't want to activate
// this view
return CWnd::OnMouseActivate(pDesktopWnd, nHitTest, message);
}
////////////////////////// CColorView
IMPLEMENT_DYNCREATE(CColorView, CView)
BEGIN_MESSAGE_MAP(CColorView, CView)
//{{AFX_MSG_MAP(CColorView)
ON_WM_MOUSEACTIVATE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
// CColorView construction/destruction
CColorView::CColorView()
{}
CColorView::~CColorView()
{}
void CColorView::OnDraw(CDC* pDC)
{
CMainDoc* pDoc = GetDocument();
CRect rect;
GetClientRect(rect);
// fill the view with the specified color
CBrush br(pDoc->m_colorData);
pDC->FillRect(rect, &br);
}
int CColorView::OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT message)
{
// side-step CView's implementation since we don't want to activate
// this view
return CWnd::OnMouseActivate(pDesktopWnd, nHitTest, message);
}
void CColorView::OnActivateView(BOOL, CView*, CView*)
{
ASSERT(FALSE); // output only view - should never be active
}
///////////////////////////////////////// splitter.h文件；
// CSplitterFrame frame with splitter/wiper
class CSplitterFrame : public CMDIChildWnd
{
DECLARE_DYNCREATE(CSplitterFrame)
protected:
CSplitterFrame(); // protected constructor used by dynamic creation
// Attributes
protected:
CSplitterWnd m_wndSplitter;
// Implementation
public:
virtual ~CSplitterFrame();
virtual BOOL OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext);
// Generated message map functions
//{{AFX_MSG(CSplitterFrame)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
class CViewExSplitWnd : public CSplitterWnd
{
DECLARE_DYNAMIC(CViewExSplitWnd)
// Implementation
public:
CViewExSplitWnd();
~CViewExSplitWnd();
CWnd* GetActivePane(int* pRow = NULL, int* pCol = NULL);
};
class C3WaySplitterFrame : public CMDIChildWnd
{
DECLARE_DYNCREATE(C3WaySplitterFrame)
protected:
C3WaySplitterFrame(); // protected constructor used by dynamic creation
// Attributes
protected:
CViewExSplitWnd m_wndSplitter;
CViewExSplitWnd m_wndSplitter2; // embedded in the first
// Implementation
public:
virtual ~C3WaySplitterFrame();
virtual BOOL OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext);
// Generated message map functions
//{{AFX_MSG(C3WaySplitterFrame)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
/////////////////////////////splitter.cpp文件；
#include "stdafx.h"
#include "viewex.h"
#include "splitter.h"
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
// CSplitterFrame
// Create a splitter window which splits an output text view and an input view
// |
// TEXT VIEW (CTextView) | INPUT VIEW (CInputView)
// |
IMPLEMENT_DYNCREATE(CSplitterFrame, CMDIChildWnd)
CSplitterFrame::CSplitterFrame()
{}
CSplitterFrame::~CSplitterFrame()
{}
BOOL CSplitterFrame::OnCreateClient(LPCREATESTRUCT,
CCreateContext* pContext)
{
// create a splitter with 1 row, 2 columns
if (!m_wndSplitter.CreateStatic(this, 1, 2))
{
TRACE0("Failed to CreateStaticSplitter/n");
return FALSE;
}
// add the first splitter pane - the default view in column 0
if (!m_wndSplitter.CreateView(0, 0,pContext->m_pNewViewClass, CSize(130, 50), pContext))
{
TRACE0("Failed to create first pane/n");
return FALSE;
}
// add the second splitter pane - an input view in column 1
if (!m_wndSplitter.CreateView(0, 1,RUNTIME_CLASS(CInputView), CSize(0, 0), pContext))
{
TRACE0("Failed to create second pane/n");
return FALSE;
}
// activate the input view
SetActiveView((CView*)m_wndSplitter.GetPane(0,1));
return TRUE;
}
BEGIN_MESSAGE_MAP(CSplitterFrame, CMDIChildWnd)
//{{AFX_MSG_MAP(CSplitterFrame)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
// C3WaySplitterFrame - just like CSplitterFrame except the input view is
// the first pane, and there are two output views
// | Text View (CTextView)
// INPUT VIEW (CInputView) |------------------------
// | Color View (CColorView)
IMPLEMENT_DYNCREATE(C3WaySplitterFrame, CMDIChildWnd)
C3WaySplitterFrame::C3WaySplitterFrame()
{}
C3WaySplitterFrame::~C3WaySplitterFrame()
{}
BOOL C3WaySplitterFrame::OnCreateClient(LPCREATESTRUCT lpcs,CCreateContext* pContext)
{
// create a splitter with 1 row, 2 columns
if (!m_wndSplitter.CreateStatic(this, 1, 2))
{
TRACE0("Failed to CreateStaticSplitter/n");
return FALSE;
}
// add the first splitter pane - the default view in column 0
if (!m_wndSplitter.CreateView(0, 0,pContext->m_pNewViewClass, CSize(200, 50), pContext))
{
TRACE0("Failed to create first pane/n");
return FALSE;
}
// add the second splitter pane - which is a nested splitter with 2 rows
if (!m_wndSplitter2.CreateStatic(&m_wndSplitter, // our parent window is the first splitter
2, 1, // the new splitter is 2 rows, 1 column
WS_CHILD | WS_VISIBLE | WS_BORDER, // style, WS_BORDER is needed
m_wndSplitter.IdFromRowCol(0, 1) ))
// new splitter is in the first row, 2nd column of first splitter
{
TRACE0("Failed to create nested splitter/n");
return FALSE;
}
// now create the two views inside the nested splitter
int cyText = max(lpcs->cy - 70, 20); // height of text pane
if (!m_wndSplitter2.CreateView(0, 0,RUNTIME_CLASS(CTextView), CSize(0, cyText), pContext))
{
TRACE0("Failed to create second pane/n");
return FALSE;
}
if (!m_wndSplitter2.CreateView(1, 0,RUNTIME_CLASS(CColorView), CSize(0, 0), pContext))
{
TRACE0("Failed to create third pane/n");
return FALSE;
}
// it all worked, we now have two splitter windows which contain
// three different views
return TRUE;
}
BEGIN_MESSAGE_MAP(C3WaySplitterFrame, CMDIChildWnd)
//{{AFX_MSG_MAP(C3WaySplitterFrame)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
IMPLEMENT_DYNAMIC(CViewExSplitWnd, CSplitterWnd)
CViewExSplitWnd::CViewExSplitWnd()
{}
CViewExSplitWnd::~CViewExSplitWnd()
{}
CWnd* CViewExSplitWnd::GetActivePane(int* pRow, int* pCol)
{
ASSERT_VALID(this);
// attempt to use active view of frame window
CWnd* pView = NULL;
CFrameWnd* pFrameWnd = GetParentFrame();
ASSERT_VALID(pFrameWnd);
pView = pFrameWnd->GetActiveView();
// failing that, use the current focus
if (pView == NULL)
pView = GetFocus();
return pView;
} |
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