richeditpage.cpp

MFC窗口程序设计源代码。相信大家看得懂。

	// CFTPTREEDlg::OnSize
	if ((cx > 0) && (cy > 0))
	{
		CRect rect;
		if (m_rtf.m_hWnd != NULL)
		{
			m_rtf.GetWindowRect(rect);
			ScreenToClient(rect);
			m_rtf.MoveWindow(rect.left, rect.top,
								cx-(2*rect.left), cy-rect.top-rect.left);
		}
		// end sample
		if ( m_toolBar.m_hWnd !=NULL)
		{
			m_toolBar.GetWindowRect(rect);
			ScreenToClient(rect);
			m_toolBar.MoveWindow(rect.left, rect.top,cx,rect.bottom);
		}
	}

}

void CRicheditPage::OnUpdateEditCut(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here

	ASSERT(pCmdUI->m_nID == ID_EDIT_CUT);
	WORD wSel= m_rtf.GetSelectionType ();
	if ( wSel & SEL_TEXT )
		pCmdUI->Enable ();
	else //if ( m_rtf.GetSelectionType () == SEL_EMPTY)
		pCmdUI->Enable (FALSE);
}


void CRicheditPage::OnUpdateEditCopy(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	ASSERT(pCmdUI->m_nID == ID_EDIT_COPY);
	WORD wSel= m_rtf.GetSelectionType ();
	if (  wSel & SEL_TEXT )
		pCmdUI->Enable ();
	else if ( m_rtf.GetSelectionType () == SEL_EMPTY)
		pCmdUI->Enable (FALSE);
}

// this code is taken from Vadim Z.'s article RTF based Tooltips
// www.codeguru.com
//----------------------------------------------------------------------------
// Function CMyRichEditCtrl::Print
// @func    print the rich edit control content
// @parm    bool  | bShowPrintDialog | show the dialog box CPrintDialog
//----------------------------------------------------------------------------
// @todo 
//----------------------------------------------------------------------------
void CRicheditPage::Print(BOOL bShowPrintDialog)
{
	CPrintDialog printDialog(FALSE);
	
	
	if (bShowPrintDialog)
	{
		int r = printDialog.DoModal();
		if (r == IDCANCEL)
			return; // User pressed cancel, don't print.
	}
	else
	{
		printDialog.GetDefaults();
	}

	HDC hPrinterDC = printDialog.GetPrinterDC();

	// This code basically taken from MS KB article Q129860 
	
	FORMATRANGE fr;
	  int	  nHorizRes = GetDeviceCaps(hPrinterDC, HORZRES);
	  int	  nVertRes = GetDeviceCaps(hPrinterDC, VERTRES);
      int     nLogPixelsX = GetDeviceCaps(hPrinterDC, LOGPIXELSX);
	  int     nLogPixelsY = GetDeviceCaps(hPrinterDC, LOGPIXELSY);
	  LONG	      lTextLength;   // Length of document.
	  LONG	      lTextPrinted;  // Amount of document printed.

	 // Ensure the printer DC is in MM_TEXT mode.
	  SetMapMode ( hPrinterDC, MM_TEXT );

	 // Rendering to the same DC we are measuring.
	  ZeroMemory(&fr, sizeof(fr));
	  fr.hdc = fr.hdcTarget = hPrinterDC;

	 // Set up the page.
	  fr.rcPage.left     = fr.rcPage.top = 0;
	  fr.rcPage.right    = (nHorizRes/nLogPixelsX) * 1440;
	  fr.rcPage.bottom   = (nVertRes/nLogPixelsY) * 1440;

	 // Set up 0" margins all around.
	  fr.rc.left   = fr.rcPage.left ;//+ 1440;  // 1440 TWIPS = 1 inch.
	  fr.rc.top    = fr.rcPage.top ;//+ 1440;
	  fr.rc.right  = fr.rcPage.right ;//- 1440;
	  fr.rc.bottom = fr.rcPage.bottom ;//- 1440;

	 // Default the range of text to print as the entire document.
	  fr.chrg.cpMin = 0;
	  fr.chrg.cpMax = -1;
      m_rtf.FormatRange(&fr,TRUE);      
	 // Set up the print job (standard printing stuff here).
		DOCINFO di;
	  ZeroMemory(&di, sizeof(di));
	  di.cbSize = sizeof(DOCINFO);

	  di.lpszDocName = m_strFilename;

	    // Do not print to file.
	     di.lpszOutput = NULL;
	     

	 // Start the document.
	  StartDoc(hPrinterDC, &di);

	 // Find out real size of document in characters.
	  lTextLength = m_rtf.GetTextLength();
	
	 do
	     {
	     // Start the page.
	     StartPage(hPrinterDC);

	    // Print as much text as can fit on a page. The return value is
	     // the index of the first character on the next page. Using TRUE
	     // for the wParam parameter causes the text to be printed.

	    lTextPrinted =m_rtf.FormatRange(&fr,TRUE);
		m_rtf.DisplayBand(&fr.rc );

	    // Print last page.
	     EndPage(hPrinterDC);

	    // If there is more text to print, adjust the range of characters
	    // to start printing at the first character of the next page.
		if (lTextPrinted < lTextLength)
		{
		fr.chrg.cpMin = lTextPrinted;
		fr.chrg.cpMax = -1;
		}
	     }
	  while (lTextPrinted < lTextLength);

	 // Tell the control to release cached information.
	  m_rtf.FormatRange(NULL,FALSE);


	 EndDoc (hPrinterDC);

	  ///////
	  
	DeleteDC(hPrinterDC);

}
// for updating dialog box controls
// this 2 functions are taken from Visual C++ for dummies Quick
// Reference book --- Dialog Command Enablers --- page 185 and 186
LRESULT CRicheditPage::OnKickIdle(WPARAM w, LPARAM l)
{
	AfxGetApp()->OnIdle(-1);
	OnIdleUpdateCmdUI(w,l);
	return 0L;
}
LRESULT CRicheditPage::OnIdleUpdateCmdUI(WPARAM w, LPARAM l)
{
	UpdateDialogControls((CCmdTarget*)this,TRUE);
	return 0L;
}
// added on 2 sep 2003
void CRicheditPage::OnUpdateBold(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	ASSERT(pCmdUI->m_nID == ID_BOLD);
	// get the sel type	
	WORD wSel= m_rtf.GetSelectionType ();
	// if sel is bold then show the Bold button pressed
	if ( (wSel==SEL_MULTICHAR) &&  m_rtf.SelectionIsBold() )
		pCmdUI->SetCheck(m_rtf.bold);  
	// if I have clicked in the window and immediately after the caret
	// is a bold character, then show the Bold button pressed
	else if ( m_bClick)
	{
     if ( m_rtf.SelectionIsBold() )
		 pCmdUI->SetCheck(m_rtf.bold);
	 else 
		 pCmdUI->SetCheck(0); 
	}
	else if ( m_rtf.GetSelectionType () == SEL_EMPTY)
	{
		pCmdUI->SetCheck(0);  
	}
}
// 2 sep 2003
void CRicheditPage::OnUpdateItalic(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	ASSERT(pCmdUI->m_nID == ID_ITALIC);
	// get the sel type	
	WORD wSel= m_rtf.GetSelectionType ();
	// if sel is bold then show the Bold button pressed
	if ( (wSel==SEL_MULTICHAR) &&  m_rtf.SelectionIsItalic() )
		pCmdUI->SetCheck(1);  
	// if I have clicked in the window and immediately after the caret
	// is a bold character, then show the Bold button pressed
	else if ( m_bClick)
	{
     if ( m_rtf.SelectionIsItalic() )
		 pCmdUI->SetCheck(1);
	 else 
		 pCmdUI->SetCheck(0); 
	}
	else if ( m_rtf.GetSelectionType () == SEL_EMPTY)
	{
		pCmdUI->SetCheck(0);  
	}
	
}
// 2 sep 2003
void CRicheditPage::OnUpdateUnderline(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	ASSERT(pCmdUI->m_nID == ID_UNDERLINE);
	WORD wSel= m_rtf.GetSelectionType ();
	if (   wSel & SEL_TEXT && m_rtf.SelectionIsUnderlined() )
		pCmdUI->SetCheck(1 );  
	else if ( m_bClick)
	{
     if ( m_rtf.SelectionIsUnderlined() )
		 pCmdUI->SetCheck(1);
	 else 
		 pCmdUI->SetCheck(0); 
	}

	else if ( m_rtf.GetSelectionType () == SEL_EMPTY)
	{
		pCmdUI->SetCheck(0);  
	}
	
}
// 2 sep 2003
void CRicheditPage::OnUpdateEditPaste(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	COleDataObject oleTarget;
	oleTarget.AttachClipboard ();
	pCmdUI->Enable(oleTarget.IsDataAvailable(CF_TEXT));  
}

void CRicheditPage::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	// if I have clicked in the window and immediately after the caret
	// is a bold,italic or underlined character, then show the Bold, 
	// Italic or Underlined button pressed

	    m_bClick=TRUE;
			// get the caret position 
			point=m_rtf.GetCaretPos ();
			// if there is no text in the window, do not select 
			// anything
			if ( m_rtf.GetTextLength()==0 )
				m_rtf.SetSel(0 , 0);						
			else 
				// select 1 character and verify if the character is 
				// bold, italic or underlined
				m_rtf.SetSel(point.x , point.x+1);
			m_rtf.ShowCaret(); 
			// hide the selection. It is not importand for the user to 
			// see it
			m_rtf.HideSelection(TRUE,FALSE);
	CDialog::OnLButtonDown(nFlags, point);
}

void CRicheditPage::OnUpdateEditDelete(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	ASSERT(pCmdUI->m_nID == ID_EDIT_DELETE);
	WORD wSel= m_rtf.GetSelectionType ();
	if (  wSel & SEL_TEXT )
		pCmdUI->Enable ();
	else if ( m_rtf.GetSelectionType () == SEL_EMPTY)
		pCmdUI->Enable (FALSE);
}

void CRicheditPage::OnUpdateEditUndo(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if (m_rtf.CanUndo())   
		pCmdUI->Enable() ;	
	else pCmdUI->Enable(FALSE) ;	
	
}

void CRicheditPage::OnUpdateParagraphBulleted(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	ASSERT(pCmdUI->m_nID == ID_PARAGRAPH_BULLETED);
	WORD wSel= m_rtf.GetSelectionType ();
	if (   wSel & SEL_TEXT && m_rtf.ParagraphIsBulleted()) 
		pCmdUI->SetCheck(1 );  
	else if ( m_bClick)
	{
     if ( m_rtf.ParagraphIsBulleted() )
		 pCmdUI->SetCheck(1);
	 else 
		 pCmdUI->SetCheck(0); 
	}
	else if ( m_rtf.GetSelectionType () == SEL_EMPTY)
	{
		pCmdUI->SetCheck(0);  
	}
}

void CRicheditPage::OnUpdateParagraphCenter(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	ASSERT(pCmdUI->m_nID == ID_PARAGRAPH_CENTER);
	WORD wSel= m_rtf.GetSelectionType ();
	if (   wSel & SEL_TEXT && m_rtf.ParagraphIsCentered()) 
		pCmdUI->SetCheck(1 );  
	else if ( m_bClick)
	{
     if ( m_rtf.ParagraphIsCentered() )
		 pCmdUI->SetCheck(1);
	 else 
		 pCmdUI->SetCheck(0); 
	}
	else if ( m_rtf.GetSelectionType () == SEL_EMPTY)
	{
		pCmdUI->SetCheck(0);  
	}
	
}

void CRicheditPage::OnUpdateParagraphLeft(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	ASSERT(pCmdUI->m_nID == ID_PARAGRAPH_LEFT);
	WORD wSel= m_rtf.GetSelectionType ();
	if (   wSel & SEL_TEXT && m_rtf.ParagraphIsLeft()) 
		pCmdUI->SetCheck(1 );  
	else if ( m_bClick)
	{
     if ( m_rtf.ParagraphIsLeft() )
		 pCmdUI->SetCheck(1);
	 else 
		 pCmdUI->SetCheck(0); 
	}
	else if ( m_rtf.GetSelectionType () == SEL_EMPTY)
	{
		pCmdUI->SetCheck(0);  
	}
	
}

void CRicheditPage::OnUpdateParagraphRight(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	ASSERT(pCmdUI->m_nID == ID_PARAGRAPH_RIGHT);
	WORD wSel= m_rtf.GetSelectionType ();
	if (   wSel & SEL_TEXT && m_rtf.ParagraphIsRight()) 
		pCmdUI->SetCheck(1 );  
	else if ( m_bClick)
	{
     if ( m_rtf.ParagraphIsRight() )
		 pCmdUI->SetCheck(1);
	 else 
		 pCmdUI->SetCheck(0); 
	}
	else if ( m_rtf.GetSelectionType () == SEL_EMPTY)
	{
		pCmdUI->SetCheck(0);  
	}
	
}