Hi!
Before including PoDoFo-headers I do:
// GDI-Defines für Ansi/Unicode kollidieren mit PodoFo-Namen
#undef CreateFont
#undef DrawText
#undef GetObject
to get rid of those defines, that works fine for me.
Uli
_____
Von: Shazad Khan [mailto:xalamk...@gmail.com]
Gesendet: Donnerstag, 21. November 2013 19:59
An: Ulrich Arnold
Cc: podofo-users@lists.sourceforge.net
Betreff: Re: [Podofo-users] two linker errors
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@W4EFon
tCreationFlags@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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