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A Simple Printing Mechanism

, 16 May 2000
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Learn how to implement print support in your applications.
  • Download source files - 6 Kb

    A question that frequently arises is "How do I print?" In many cases, the full-blown print handling of a document/view class is inappropriate; in other cases, such as a dialog-based application, it is not available directly via the MFC library. This little class provides for some simple line-printer-simulation output, suitable for printing files, simple text, etc. This is the print mechanism I use for my logging control (and the code for this accompanies that project as well).

    void CMyClass::Print()
        CPrintDialog dlg(FALSE,
    		      PD_ALLPAGES |
    		      PD_NOPAGENUMS |
    		      PD_RETURNDC |
        if(has a selection)
    	{ /* enable selection */
            dlg.m_pd.Flags |= PD_SELECTION;
        } /* enable selection */
        { /* use selection */
            dlg.m_pd.Flags |= PD_NOSELECTION;
        } /* use selection */
        { /* DoModal */
        case 0:
        case IDCANCEL:
        case IDOK:
            ASSERT(FALSE); // impossible condition
        } /* DoModal */
        CDC dc;
        printer = new CPrinter(&dc);
        { /* success */
            for(some sample loop condition)
            { /* print line */
                CString s;
                ... // form the string you want to print
            } /* print line */
        } /* success */
        delete printer;
    } // CTraceList::Print

    This is listed as a simple printing mechanism. It is not as elaborate as the one in our book Win32 Programming., but that is a pure-C version. This is a simpler, but pure MFC, example.

    You can download just this printing code here, or you can download it as part of the Logging Control project.


    CPrinter::CPrinter(CDC * dc)
    Constructs a printer object with the DC of a printer. This is typically obtained from the CPrintDialog by using the flag PD_RETURNDC, then using CDC::FromHandle to get an MFC object for the DC.

    This terminates the print job. It calls the necessary EndPage and EndDoc functions. If the CPrinter object is destroyed while a print job is active, the destructor will call this method.

    int CPrinter::GetPageNumber()
    This function can be called by a subclass's PageHeading routine to get the current page number.

    virtual void CPrinter::PageHeading()
    This method can be overridden in a subclass to print a page heading. The default effect in the base class is to print the program name on the left and the page number on the right.

    void CPrinter::PrintLine(const CString & line)
    This method prints a single line to the printer. No attempt is made to do line wrapping. Implicit left and top margins are assumed. If the line would overflow the existing printable page area, the current page is terminated and a new page is started. The page number is incremented, and heading is printed on the new page (see CPrinter::PageHeading()).

    virtual void CPrinter::SetPrinterFont()
    In the base class, this establishes the printer font as the stock ANSI_FIXED_FONT. A subclass may override this to provide its own font.

    Starts a document on the printer. This must be called before any PrintLine calls are made. This sets up default margins and performs the necessary ::StartDoc call.

    The views expressed in these essays are those of the author, and in no way represent, nor are they endorsed by, Microsoft.

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    Copyright © 2000, <!--webbot bot="Substitution" s-variable="CompanyLongName" startspan -->The Joseph M. Newcomer Co.<!--webbot bot="Substitution" endspan i-checksum="64444" --> All Rights Reserved
  • License

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    About the Author

    Joseph M. Newcomer

    United States United States
    No Biography provided

    Comments and Discussions

    QuestionPrinting Problum Pinmemberlcloonkar10-Jan-10 5:15 
    Questionwhen printer is not configured? Pinmember723Alex20-Jul-07 11:41 
    GeneralMFC Print preview problem PinmemberEngineer Masood30-Mar-06 17:52 
    GeneralTnx Pinmemberquistiun8-Mar-06 19:26 
    GeneralProblem found in StartPrinting Pinmemberapargeter24-Sep-05 10:14 
    GeneralProblem when Print Arabic fonts Pinmemberbushka12-Jun-05 12:25 
    GeneralRe: Problem when Print Arabic fonts PinmemberJoseph M. Newcomer12-Jun-05 18:11 
    GeneralRe: Problem when Print Arabic fonts PinsussAnonymous13-Jun-05 6:54 
    From : Bushka
    to : Mr.Joseph M. Newcomer
    Very Thanks to email me and I'm sorry for numbers in function CreateFont this mean the number
    CreateFont( int nHeight, int nWidth, int nEscapement, int nOrientation, int nWeight, BYTE bItalic, BYTE bUnderline, BYTE cStrikeOut, BYTE nCharSet, BYTE nOutPrecision, BYTE nClipPrecision, BYTE nQuality, BYTE nPitchAndFamily, LPCTSTR lpszFacename );
    You can find more detail in MSDN and for the number 178 this ARABIC_CHARSET
    My problem in PrintView with arabic only, English no problem with it. printing like view with no any problem.
    Also I use only function OnDraw
    thanks again and i hope to find answer
    I can send the source code but where ???

    I use number
    GeneralPrinting files from VB/VC PinmemberfranklinjIssac4-Apr-05 2:50 
    GeneralRe: Printing files from VB/VC PinmemberJoseph M. Newcomer4-Apr-05 11:25 

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