HOWTO: Print from the Microsoft Web Browser Control

• Microsoft Visual C++, 32-bit Edition, version 5.0
• Internet Explorer 3.0, 3.01, 3.02, 4.0, 4.01
• Internet Client SDK, version 4.0, 4.01

SUMMARY

The Web Browser component of Internet Explorer 3.x and 4.x does not support a Print method. You can still print the contents of the Web Browser control using one of these methods:

• Set focus to the Web Browser control and send a key combination of CTRL+P.

  -or-

• Call the GetDocument() method that returns an IDispatch*. Using the IDispatch*, call QueryInterface() on IID_IOleCommandTarget. With the object pointer returned, call Exec(NULL, OLECMDID_PRINT, 0, NULL,NULL).

MORE INFORMATION

The following code can be used to cause the Web Browser control to print its contents. In this example, m_ctlWebBrowser is an instance of the wrapper class generated by Class Wizard for the control. m_ctlWebBrowser is contained in a dialog and initialized in the OnInitDialog function. A "Print" button on the dialog is wired to an OnPrint function. The "Print" button is enabled in response to the NavigateComplete event of the Web Browser control.

Sample Code

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

       m_ctlWebBrowser.Navigate(_T("http://www.microsoft.com"),
                                NULL, NULL, NULL, NULL);
       return TRUE;
   }

Method #1

   void CAboutDlg::OnPrint()
   {
       CWnd* pWnd = GetFocus ();

       m_ctlWebBrowser.SetFocus ();
       // send Ctrl-P
       keybd_event (VK_CONTROL, 0, 0, 0);
       keybd_event ('P', 0, 0, 0);

       // set focus to control that previously had focus
       if (pWnd);
           pWnd->SetFocus ();
   }

Method #2

   // DOCOBJ.H comes with the Internet Client SDK and is installed by
   // default in the "\INetSDK\Include" directory
   #include <docobj.h>

   void CAboutDlg::OnPrint()
   {
       LPDISPATCH lpDispatch = NULL;
       LPOLECOMMANDTARGET lpOleCommandTarget = NULL;

       lpDispatch = m_ctlWebBrowser.GetDocument();
       ASSERT(lpDispatch);

       lpDispatch->QueryInterface(IID_IOleCommandTarget,
                                  (void**)&lpOleCommandTarget);
       ASSERT(lpOleCommandTarget);

       lpDispatch->Release();

       // print contents of web browser control
       lpOleCommandTarget->Exec(NULL, OLECMDID_PRINT, 0, NULL,NULL);

       lpOleCommandTarget->Release();
   }

REFERENCES

Internet Client SDK Online documentation.

Keywords          : MfcOLE kbprint kbhowto
Technology        : kbole kbmfc
Version           : 4.2
Platform          : NT WINDOWS