An alternative to the often asked view-in-dialog problem using a dialog bar By thom_as In this article I show an alternative to the tricky (and thus often unstable) attempts to create a view on a dialog. http://www.codeproject.com/dialog/View_in_Dialog.asp
BOOL CDlgViewDlg::OnInitDialog() { CDialog::OnInitDialog(); // Add "About..." menu item to system menu. // IDM_ABOUTBOX must be in the system command range. ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE); if (pSysMenu != NULL) { CString strAboutMenu; strAboutMenu.LoadString(IDS_ABOUTBOX); if (!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); } } // Set the icon for this dialog. The framework does this automatically // when the application's main window is not a dialog SetIcon(m_hIcon, TRUE); // Set big icon SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here static CDialogViewManager manager; manager.Install2Dialog(this); VERIFY(manager.AddView(IDC_STATIC_AREA,RUNTIME_CLASS(CHtmlView))); CHtmlView *pHtmlView=DYNAMIC_DOWNCAST(CHtmlView,manager.GetView(IDC_STATIC_AREA)); pHtmlView->Navigate2("D:\\YangTze\\VC\\DlgView\\Debug\\demo.htm",NULL,NULL); return TRUE; // return TRUE unless you set the focus to a control }void CDlgViewDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } }// If you add a minimize button to your dialog, you will need the code below // to draw the icon. For MFC applications using the document/view model, // this is automatically done for you by the framework.void CDlgViewDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); // Center icon in client rectangle int cxIcon = GetSystemMetrics(SM_CXICON); int cyIcon = GetSystemMetrics(SM_CYICON); CRect rect; GetClientRect(&rect); int x = (rect.Width() - cxIcon + 1) / 2; int y = (rect.Height() - cyIcon + 1) / 2; // Draw the icon dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } }// The system calls this to obtain the cursor to display while the user drags // the minimized window. HCURSOR CDlgViewDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; }// DlgViewDlg.h : header file //#if !defined(AFX_DLGVIEWDLG_H__BC744FD5_492C_47EA_BAE6_C01295EB3432__INCLUDED_) #define AFX_DLGVIEWDLG_H__BC744FD5_492C_47EA_BAE6_C01295EB3432__INCLUDED_#if _MSC_VER > 1000 #pragma once #endif // _MSC_VER > 1000///////////////////////////////////////////////////////////////////////////// // CDlgViewDlg dialogclass CDlgViewDlg : public CDialog { // Construction public: CDlgViewDlg(CWnd* pParent = NULL); // standard constructor// Dialog Data //{{AFX_DATA(CDlgViewDlg) enum { IDD = IDD_DLGVIEW_DIALOG }; // NOTE: the ClassWizard will add data members here //}}AFX_DATA // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CDlgViewDlg) protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL// Implementation protected: HICON m_hIcon; // Generated message map functions //{{AFX_MSG(CDlgViewDlg) virtual BOOL OnInitDialog(); afx_msg void OnSysCommand(UINT nID, LPARAM lParam); afx_msg void OnPaint(); afx_msg HCURSOR OnQueryDragIcon(); //}}AFX_MSG DECLARE_MESSAGE_MAP() };//{{AFX_INSERT_LOCATION}} // Microsoft Visual C++ will insert additional declarations immediately before the previous line.#endif // !defined(AFX_DLGVIEWDLG_H__BC744FD5_492C_47EA_BAE6_C01295EB3432__INCLUDED_)其实用CWnd类取代不好吗?
By thom_as In this article I show an alternative to the tricky (and thus often unstable) attempts to create a view on a dialog.
http://www.codeproject.com/dialog/View_in_Dialog.asp
// ==========================================
// DialogViewManager.h - YangTze - 2001.09.13
// ==========================================#if !defined(AFX_DIALOGVIEWMANAGER_H__C2BC5B6F_E22E_460A_96AE_DFA61B9D749C__INCLUDED_)
#define AFX_DIALOGVIEWMANAGER_H__C2BC5B6F_E22E_460A_96AE_DFA61B9D749C__INCLUDED_#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// DialogViewManager.h : header file
//#include <afxtempl.h>/////////////////////////////////////////////////////////////////////////////
// CDialogViewManager command targetclass CDialogViewManager : public CCmdTarget
{
DECLARE_DYNCREATE(CDialogViewManager) CDialogViewManager(); // protected constructor used by dynamic creation// Attributes
public:protected: // Embeded type and structure
typedef struct _DVMITEM
{
CView *pView;
} DVMITEM,*PDVMITEM;
typedef CMap<UINT,UINT,DVMITEM*,DVMITEM*> CMapID2DVMItem; CMapID2DVMItem m_mapID2DVMItem;
CDialog *m_pParentDialog;// Operations
public:
void RemoveAll(void);
void DeleteView(CRuntimeClass *pViewClass);
void DeleteView(UINT nIDRectangle);
CView * GetView(CRuntimeClass *pViewClass);
CView * GetView(UINT nIDRectangle);
BOOL AddView(UINT nIDRectangle,CRuntimeClass *pViewClass);
void UnInstall(void);
void Install2Dialog(CDialog *pParentDialog);// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CDialogViewManager)
//}}AFX_VIRTUAL// Implementation
protected:#ifdef _DEBUG
virtual void Dump(CDumpContext& dc) const;
virtual void AssertValid() const;
#endifpublic:
virtual ~CDialogViewManager(); // Generated message map functions
//{{AFX_MSG(CDialogViewManager)
// NOTE - the ClassWizard will add and remove member functions here.
//}}AFX_MSG DECLARE_MESSAGE_MAP()
};///////////////////////////////////////////////////////////////////////////////{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.#endif // !defined(AFX_DIALOGVIEWMANAGER_H__C2BC5B6F_E22E_460A_96AE_DFA61B9D749C__INCLUDED_)
// ============================================
// DialogViewManager.cpp - YangTze - 2001.09.13
// ============================================#include "stdafx.h"
#include <afxpriv.h>
#include "DlgView.h"#include "DialogViewManager.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// CDialogViewManagerIMPLEMENT_DYNCREATE(CDialogViewManager, CCmdTarget)CDialogViewManager::CDialogViewManager()
{
m_pParentDialog=NULL;
}CDialogViewManager::~CDialogViewManager()
{
UnInstall();
}
BEGIN_MESSAGE_MAP(CDialogViewManager, CCmdTarget)
//{{AFX_MSG_MAP(CDialogViewManager)
// NOTE - the ClassWizard will add and remove mapping macros here.
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CDialogViewManager message handlersvoid CDialogViewManager::Install2Dialog(CDialog *pParentDialog)
{
ASSERT(pParentDialog);
ASSERT(::IsWindow(pParentDialog->GetSafeHwnd()));
m_pParentDialog=pParentDialog;
}void CDialogViewManager::UnInstall()
{
RemoveAll();
m_pParentDialog=NULL;
}BOOL CDialogViewManager::AddView(UINT nIDRectangle, CRuntimeClass *pViewClass)
{
BOOL bSuccess=FALSE;
DVMITEM *pdvmi;
if(m_mapID2DVMItem.Lookup(nIDRectangle,pdvmi)||(!m_pParentDialog)||(!::IsWindow(m_pParentDialog->GetSafeHwnd())))
{
}
else
{
ASSERT_VALID_IDR(nIDRectangle);
ASSERT(pViewClass!=NULL||pViewClass->IsDerivedFrom(RUNTIME_CLASS(CView)));
ASSERT(m_pParentDialog!=NULL);
CWnd *pWnd=NULL;
CCreateContext *pContext=new CCreateContext;
if(pContext)
{
pContext->m_pNewViewClass=pViewClass;
pContext->m_pCurrentDoc=NULL;
pContext->m_pCurrentFrame=NULL;
pContext->m_pLastView=NULL;
pContext->m_pNewDocTemplate=NULL;
try
{
pWnd=DYNAMIC_DOWNCAST(CWnd,pViewClass->CreateObject());
if(!pWnd) AfxThrowUserException();
ASSERT_KINDOF(CWnd,pWnd);
ASSERT(pWnd->m_hWnd==NULL);
CWnd *pCtrl=m_pParentDialog->GetDlgItem(nIDRectangle);
ASSERT(pCtrl);
pCtrl->ShowWindow(SW_HIDE);
CRect rect;
pCtrl->GetWindowRect(&rect);
m_pParentDialog->ScreenToClient(&rect);
pWnd->Create(NULL,NULL,AFX_WS_DEFAULT_VIEW,CRect(0,0,0,0),m_pParentDialog,0,pContext);
CView *pView=DYNAMIC_DOWNCAST(CView,pWnd);
ASSERT_KINDOF(CView,pView);
pView->MoveWindow(&rect);
DVMITEM *pdvmi=new DVMITEM;
pdvmi->pView=pView;
m_mapID2DVMItem[nIDRectangle]=pdvmi;
bSuccess=TRUE;
}
catch(...)
{
TRACE1("Can not create a view in dialog( %d ).\n",m_pParentDialog);
}
}
if(pContext) delete pContext;
}
return bSuccess;
}CView * CDialogViewManager::GetView(UINT nIDRectangle)
{
ASSERT_VALID(this);
UINT nID;
DVMITEM *pdvmi;
POSITION pos=m_mapID2DVMItem.GetStartPosition();
while(pos)
{
m_mapID2DVMItem.GetNextAssoc(pos,nID,pdvmi);
if(nID==nIDRectangle)
{
return pdvmi->pView;
}
}
return NULL;
}
{
ASSERT_VALID(this);
UINT nID;
DVMITEM *pdvmi;
POSITION pos=m_mapID2DVMItem.GetStartPosition();
while(pos)
{
m_mapID2DVMItem.GetNextAssoc(pos,nID,pdvmi);
if(pdvmi->pView->IsKindOf(pViewClass))
{
return pdvmi->pView;
}
}
return NULL;
}void CDialogViewManager::DeleteView(UINT nIDRectangle)
{
ASSERT_VALID(this);
UINT nID;
DVMITEM *pdvmi;
POSITION pos=m_mapID2DVMItem.GetStartPosition();
while(pos)
{
m_mapID2DVMItem.GetNextAssoc(pos,nID,pdvmi);
if(nID==nIDRectangle)
{
ASSERT(pdvmi->pView);
ASSERT_VALID(pdvmi->pView);
ASSERT(::IsWindow(pdvmi->pView->m_hWnd));
pdvmi->pView->ShowWindow(SW_HIDE);
pdvmi->pView->SendMessage(WM_CLOSE,0,0);
m_mapID2DVMItem.RemoveKey(nID);
delete pdvmi;
}
}
}void CDialogViewManager::DeleteView(CRuntimeClass *pViewClass)
{
ASSERT_VALID(this);
UINT nID;
DVMITEM *pdvmi;
POSITION pos=m_mapID2DVMItem.GetStartPosition();
while(pos)
{
m_mapID2DVMItem.GetNextAssoc(pos,nID,pdvmi);
if(pdvmi->pView->IsKindOf(pViewClass))
{
ASSERT(pdvmi->pView);
ASSERT_VALID(pdvmi->pView);
ASSERT(::IsWindow(pdvmi->pView->m_hWnd));
pdvmi->pView->ShowWindow(SW_HIDE);
pdvmi->pView->SendMessage(WM_CLOSE,0,0);
m_mapID2DVMItem.RemoveKey(nID);
delete pdvmi;
}
}
}void CDialogViewManager::RemoveAll()
{
ASSERT_VALID(this);
UINT nID;
DVMITEM *pdvmi;
POSITION pos=m_mapID2DVMItem.GetStartPosition();
while(pos)
{
m_mapID2DVMItem.GetNextAssoc(pos,nID,pdvmi);
ASSERT(pdvmi->pView);
if(::IsWindow(pdvmi->pView->m_hWnd))
{
pdvmi->pView->ShowWindow(SW_HIDE);
pdvmi->pView->SendMessage(WM_CLOSE,0,0);
}
m_mapID2DVMItem.RemoveKey(nID);
delete pdvmi;
}
}#ifdef _DEBUG
void CDialogViewManager::AssertValid() const
{
CCmdTarget::AssertValid();
}void CDialogViewManager::Dump(CDumpContext &dc) const
{
CCmdTarget::Dump(dc);
}
#endif
// DlgViewDlg.cpp : implementation file
//#include "stdafx.h"
#include "DlgView.h"
#include "DlgViewDlg.h"#include <afxhtml.h>
#include "DialogViewManager.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App Aboutclass CAboutDlg : public CDialog
{
public:
CAboutDlg();// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA // ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CDlgViewDlg dialogCDlgViewDlg::CDlgViewDlg(CWnd* pParent /*=NULL*/)
: CDialog(CDlgViewDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CDlgViewDlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}void CDlgViewDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CDlgViewDlg)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}BEGIN_MESSAGE_MAP(CDlgViewDlg, CDialog)
//{{AFX_MSG_MAP(CDlgViewDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CDlgViewDlg message handlers
{
CDialog::OnInitDialog(); // Add "About..." menu item to system menu. // IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
} // Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
static CDialogViewManager manager;
manager.Install2Dialog(this);
VERIFY(manager.AddView(IDC_STATIC_AREA,RUNTIME_CLASS(CHtmlView)));
CHtmlView *pHtmlView=DYNAMIC_DOWNCAST(CHtmlView,manager.GetView(IDC_STATIC_AREA));
pHtmlView->Navigate2("D:\\YangTze\\VC\\DlgView\\Debug\\demo.htm",NULL,NULL); return TRUE; // return TRUE unless you set the focus to a control
}void CDlgViewDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.void CDlgViewDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); // Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2; // Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CDlgViewDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}// DlgViewDlg.h : header file
//#if !defined(AFX_DLGVIEWDLG_H__BC744FD5_492C_47EA_BAE6_C01295EB3432__INCLUDED_)
#define AFX_DLGVIEWDLG_H__BC744FD5_492C_47EA_BAE6_C01295EB3432__INCLUDED_#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000/////////////////////////////////////////////////////////////////////////////
// CDlgViewDlg dialogclass CDlgViewDlg : public CDialog
{
// Construction
public:
CDlgViewDlg(CWnd* pParent = NULL); // standard constructor// Dialog Data
//{{AFX_DATA(CDlgViewDlg)
enum { IDD = IDD_DLGVIEW_DIALOG };
// NOTE: the ClassWizard will add data members here
//}}AFX_DATA // ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CDlgViewDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL// Implementation
protected:
HICON m_hIcon; // Generated message map functions
//{{AFX_MSG(CDlgViewDlg)
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.#endif // !defined(AFX_DLGVIEWDLG_H__BC744FD5_492C_47EA_BAE6_C01295EB3432__INCLUDED_)其实用CWnd类取代不好吗?