User manual of VeryPDF PDF to TXT Converter SDK - How to convert PDF to TXT with SDK version

VeryPDF PDF to TXT Converter COM supports to be called from different programming languages like Visual Basic, C/C++, Delphi, ASP, PHP, C#, and .NET. It is helpful for application developers to develop new application in which the function of converting PDF to TXT will be realized perfectly.

In this page, you will see the main samples like ASP, C++ and VB of VeryPDF PDF to TXT Converter COM, which will enable you to use this application smoothly.

System preference

Operating Systems: all the Windows platforms, like Windows 2000, XP, Vista, 7, 8, 10, 11, Windows Server 2003, 2008, 2008 R2 and later systems, both 32 Bit and 64 Bit and so on.

Programming Languages

The following programming languages are supported：C#, VB .NET, MS Visual Basic, Borland Delphi, VBA (MS Office products such as Access) and C++ via COM, C and C++ via native C.

Sample: ASP

dim oTest

dim nRet

Set oTest = Server.CreateObject("PDF2TXT.CPDF2TXT")

Response.write "Create Object Success!"

oTest.com_SetTXTFormat 1

oTest.com_SetZoomRatio 90

oTest.com_PDF2TXTSetLicenseCode("XXXXXXXXXXXXXXXXXXXXXX")

nRet = oTest.com_Pdf2Txt("C:\sample1.pdf","C:\sample1-pdf2txt.txt")

nRet = oTest.com_Pdf2TxtEx(

"C:\sample1.pdf","C:\sample1-pdf2txtex.txt",0,0,"",""

)

Response.write "Convert Success!"

Sample:Visual C++

void ConvertPDFBuffer2TextBuffer(char *pdffile, char *textfile)

{

int m_iFileLength = 0;

char* pdfBuffer = NULL;

FILE *file = fopen(pdffile,"rb");

if(file)

{

m_iFileLength = _filelength(fileno(file));

if(m_iFileLength <= 0)

{

fclose(file);

return;

}

pdfBuffer = new char[m_iFileLength];

if(pdfBuffer == NULL)

{

fclose(file);

return;

}

memset(pdfBuffer,0,m_iFileLength);

fread(pdfBuffer,1,m_iFileLength,file);

fclose(file);

}

if(pdfBuffer == NULL || m_iFileLength <= 0)

return;

SetPageSeparator("<<<<<<<<<********>>>>>>>>>>>>>");

SetZoomRatio(100);

SetTXTFormat(1);

SetOpenResultFile(0);

SetDeleteBlankLine(TRUE);

int textBufferSize;

const char *textbuffer = PDFBuffer2TextBuffer(

pdfBuffer, m_iFileLength, &textBufferSize

);

if(textbuffer)

printf("%s\n",textbuffer);

PDF2TextFreeBuffer(textbuffer);

LPCWSTR textbufferW = PDFBuffer2TextBufferW(

pdfBuffer, m_iFileLength, &textBufferSize

);

PDF2TextFreeBufferW(textbufferW);

textbufferW = PDFBuffer2TextBufferWEx( pdfBuffer,m_iFileLength,&textBufferSize,

0, 0,NULL,NULL,NULL,0

);

PDF2TextFreeBufferW(textbufferW);

delete []pdfBuffer;

}

Sample: Visual Basic

Private Sub bconvert_Click()

' only PDF Files

cdialog.Filter = "PDF Files (*.PDF)|*.PDF"

' if ok

cdialog.ShowOpen

' if file specified

If cdialog.FileName <> "" Then

' Application exe path and add filename for txt

TxtFile = App.Path + "\Temp.Txt"

' Txt file exist ?

If Dir(TxtFile) <> "" Then

' ok delete it

Kill TxtFile

End If

'Register your PDF2TXT SDK by given License Code

PDF2TXTSetLicenseCode "XXXXXXXXX"

SetTXTFormat 1

SetGetDocumentSummary 0

SetPageSeparator "*****************>>>>>>>>>>>>>>>"

' convert the file

pdf2txt cdialog.FileName, TxtFile

' open notepad with textfile

ShellExecute 0, "open", TxtFile, "", "", SW_SHOW

TxtFile = App.Path + "\Temp2.Txt"

pdf2txtEx cdialog.FileName, TxtFile, 0, 0, "", ""

ShellExecute 0, "open", TxtFile, "", "", SW_SHOW

End If

End Sub

For more programming language samples, please download VeryPDF PDF to TXT Converter COM to see all its samples.

Sample: Visual Basic

Support all features of VeryPDF PDF to TXT Converter.
Allow developer companies to integrate the program into their products.
Enable developers to access the converter via any programming or scripting languages.
Support Visual Basic, C/C++, Delphi, ASP, PHP, C#, and .NET.