Good catch! It looks like PoDoFo doesn't use this macro only MFC does. How
can I separate those? I know MFC replaces many of these calls with A or W
version, how can I disable that? Thanks
Shahzad
On Thu, Nov 21, 2013 at 11:39 AM, Ulrich Arnold
<ulrich.arn...@t-online.de>wrote:
> Hi!
>
> MFC Headers are using a macro to define GDI-DrawText (and some others e.g.
> CreateFont) as either DrawTextA in ascii or DrawTextW in unicode build.
> You have to undefine this definitions and in case you use the CDC-Class you
> must seperate this source from the source using PoDoFo.
>
> Uli
>
> ------------------------------
> *Von:* Shazad Khan [mailto:xalamk...@gmail.com]
> *Gesendet:* Donnerstag, 21. November 2013 17:09
> *An:* podofo-users@lists.sourceforge.net
> *Betreff:* [Podofo-users] two linker errors
>
>
> I was able to build the library and the example in console application. I
> am now using it in MFC application where I will be using it. I get two link
> errors though:
>
> 1>PdfMFCDemoDlg.obj : error LNK2001: unresolved external symbol "public:
> void __thiscall PoDoFo::PdfPainter::DrawTextW(double,double,class
> PoDoFo::PdfString const &)" (?DrawTextW@PdfPainter@PoDoFo@
> @QAEXNNABVPdfString@2@@Z)
> 1>PdfMFCDemoDlg.obj : error LNK2001: unresolved external symbol "public:
> class PoDoFo::PdfFont * __thiscall PoDoFo::PdfDocument::CreateFontW(char
> const *,class PoDoFo::PdfEncoding const * const,enum
> PoDoFo::PdfFontCache::EFontCreationFlags,bool)" (?CreateFontW@PdfDocument
> @PoDoFo@@QAEPAVPdfFont@2@PBDQBVPdfEncoding@2
> @W4EFontCreationFlags@PdfFontCache@2@_N@Z)
> 1>C:\Users\Shahzad.Khan\Documents\Visual Studio
> 2010\Projects\PdfMFCDemo\Release\PdfMFCDemo.exe : fatal error LNK1120: 2
> unresolved externals
>
> I am using helloworld example code to generate the pdf. It is surprising
> to me why I get errors for these 2 calls and rest of calls are fine. Any
> ideas?
>
> Here is the code (exactly same as helloworld code again):
>
> void CPdfMFCDemoDlg::CreateHelloWorldPDF(const char * pszFilename)
> {
>
> /*
> * PdfStreamedDocument is the class that can actually write a PDF file.
> * PdfStreamedDocument is much faster than PdfDocument, but it is only
> * suitable for creating/drawing PDF files and cannot modify existing
> * PDF documents.
> *
> * The document is written directly to pszFilename while being created.
> */
> PdfStreamedDocument document( pszFilename );
>
> /*
> * PdfPainter is the class which is able to draw text and graphics
> * directly on a PdfPage object.
> */
> PdfPainter painter;
>
> /*
> * This pointer will hold the page object later.
> * PdfSimpleWriter can write several PdfPage's to a PDF file.
> */
> PdfPage* pPage;
>
> /*
> * A PdfFont object is required to draw text on a PdfPage using a
> PdfPainter.
> * PoDoFo will find the font using fontconfig on your system and
> embedd truetype
> * fonts automatically in the PDF file.
> */
> PdfFont* pFont;
>
> try {
> /*
> * The PdfDocument object can be used to create new PdfPage objects.
> * The PdfPage object is owned by the PdfDocument will also be deleted
> automatically
> * by the PdfDocument object.
> *
> * You have to pass only one argument, i.e. the page size of the page to
> create.
> * There are predefined enums for some common page sizes.
> */
> pPage = document.CreatePage( PdfPage::CreateStandardPageSize(
> ePdfPageSize_A4 ) );
>
> /*
> * If the page cannot be created because of an error (e.g.
> ePdfError_OutOfMemory )
> * a NULL pointer is returned.
> * We check for a NULL pointer here and throw an exception using the
> RAISE_ERROR macro.
> * The raise error macro initializes a PdfError object with a given error
> code and
> * the location in the file in which the error ocurred and throws it as an
> exception.
> */
> if( !pPage )
> {
> PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
> }
>
> /*
> * Set the page as drawing target for the PdfPainter.
> * Before the painter can draw, a page has to be set first.
> */
> painter.SetPage( pPage );
>
> /*
> * Create a PdfFont object using the font "Arial".
> * The font is found on the system using fontconfig and embedded into the
> * PDF file. If Arial is not available, a default font will be used.
> *
> * The created PdfFont will be deleted by the PdfDocument.
> */
> pFont = document.CreateFont( "Arial" );
>
> /*
> * If the PdfFont object cannot be allocated return an error.
> */
> if( !pFont )
> {
> PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
> }
>
> /*
> * Set the font size
> */
> pFont->SetFontSize( 18.0 );
>
> /*
> * Set the font as default font for drawing.
> * A font has to be set before you can draw text on
> * a PdfPainter.
> */
> painter.SetFont( pFont );
>
> /*
> * You could set a different color than black to draw
> * the text.
> *
> * SAFE_OP( painter.SetColor( 1.0, 0.0, 0.0 ) );
> */
>
> /*
> * Actually draw the line "Hello World!" on to the PdfPage at
> * the position 2cm,2cm from the top left corner.
> * Please remember that PDF files have their origin at the
> * bottom left corner. Therefore we substract the y coordinate
> * from the page height.
> *
> * The position specifies the start of the baseline of the text.
> *
> * All coordinates in PoDoFo are in PDF units.
> * You can also use PdfPainterMM which takes coordinates in 1/1000th mm.
> *
> */
> painter.DrawText( 56.69, pPage->GetPageSize().GetHeight() - 56.69, "Hello
> World!" );
>
> /*
> * Tell PoDoFo that the page has been drawn completely.
> * This required to optimize drawing operations inside in PoDoFo
> * and has to be done whenever you are done with drawing a page.
> */
> painter.FinishPage();
>
> /*
> * Set some additional information on the PDF file.
> */
> document.GetInfo()->SetCreator ( PdfString("examplahelloworld - A PoDoFo
> test application") );
> document.GetInfo()->SetAuthor ( PdfString("Dominik Seichter") );
> document.GetInfo()->SetTitle ( PdfString("Hello World") );
> document.GetInfo()->SetSubject ( PdfString("Testing the PoDoFo PDF
> Library") );
> document.GetInfo()->SetKeywords( PdfString("Test;PDF;Hello World;") );
>
> /*
> * The last step is to close the document.
> */
> document.Close();
> } catch ( const PdfError & e ) {
> /*
> * All PoDoFo methods may throw exceptions
> * make sure that painter.FinishPage() is called
> * or who will get an assert in its destructor
> */
> try {
> painter.FinishPage();
> } catch( ... ) {
> /*
> * Ignore errors this time
> */
> }
>
> throw e;
> }
> }
>
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