Knowledge Base Nr: 00090 HtmlCtrl.cpp - http://www.swe-kaiser.de

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MFC: IE Browser-Control in MFC-Dialogen einsetzen

  
//abgeleitet von CHTMLView
//volle unterstützung von javascript, applets, links...
//einsprung in cpp-code über <a href="app:myfunc">text</a> tags
//(quelle: System Journal 3/2000)

// If this code works, it was written by Paul DiLascia.
// If not, I don't know who wrote it.
// Compiles with Visual C++ 6.0, runs on Windows 98 and NT too.

//in stdafx.h includieren:
#include <afxcview.h>			// MFC support for Windows 95 Common Controls
#include <afxhtml.h>			// MFC support for Windows 95 Common Controls

class CHtmlCtrl : public CHtmlView {
public:
  CHtmlCtrl() { }
  ~CHtmlCtrl() { }

  BOOL CreateFromStatic(UINT nID, CWnd* pParent);

  // Normally, CHtmlView destroys itself in PostNcDestroy,
  // but we don't want to do that for a control since a control
  // is usually implemented as a stack object in a dialog.
  //
  virtual void PostNcDestroy() {  }

  // overrides to bypass MFC doc/view frame dependencies
  afx_msg void OnDestroy();
  afx_msg int  OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT msg);

  // override to trap "app:" pseudo protocol
  virtual void OnBeforeNavigate2( LPCTSTR lpszURL,
    DWORD nFlags,
    LPCTSTR lpszTargetFrameName,
    CByteArray& baPostedData,
    LPCTSTR lpszHeaders,
    BOOL* pbCancel );

  // override to handle links to "app:mumble...". lpszWhere will be "mumble"
  virtual void OnAppCmd(LPCTSTR lpszWhere);

  DECLARE_MESSAGE_MAP();
  DECLARE_DYNAMIC(CHtmlCtrl)
};

//////////////////
// Specialized derivation to handle "button" click
//
class CMyHtmlCtrl : public CHtmlCtrl {
  virtual void OnAppCmd(LPCTSTR lpszWhere);
};

class CMyAboutBoxDlg : public CDialog
{
// Construction
public:
  CMyHtmlCtrl m_page;
...
};

/////////////////
// Handle "app:ok" link by closing dialog
//
void CMyHtmlCtrl::OnAppCmd(LPCTSTR lpszWhere)
{
  if (_tcsicmp(lpszWhere,_T("ok"))==0) {
    GetParent()->SendMessage(WM_COMMAND,IDOK);
  }
}

/////////////////////////////////////////////////////////////////////////////
// CMyAboutBoxDlg message handlers

void CMyAboutBoxDlg::OnButton1() //naviagte2
{
  m_page.Navigate2(_T("http://localhost/"));
}

void CMyAboutBoxDlg::OnButton2() //home
{
  m_page.GoHome();
}

void CMyAboutBoxDlg::OnButton3() //resource
{
  m_page.LoadFromResource(_T("about.htm"));
}

BOOL CMyAboutBoxDlg::OnInitDialog()
{
  CDialog::OnInitDialog();

  VERIFY(m_page.CreateFromStatic(IDC_HTMLVIEW, this));
  m_page.LoadFromResource(_T("about.htm"));
...
}