PDF Parser SDK Examples, C/C++, VB, VB.NET, C#, ASP, PHP, Delphi source code examples for PDF Parser SDK

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VeryDOC PDF Parser SDK Examples

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PDF Parser SDK Functions:

/////////////////////////////////////
//Function:
// VeryPDF_PDFParserSDK(string lpPDFFile, string lpOutFile, string lpOptions)
//
//Description:
// Render PDF file to image file and HTML data.
//
//Parameters:
// lpPDFFile: input PDF file name
// lpOutFile: output image or html file name
// lpOptions: set options to render PDF pages, "lpOptions" parameter supports
// following options:
//
// -f <int> : first page to convert
// -l <int> : last page to convert
// -r <int> : set resolution to render PDF pages
// -opw <string> : set owner password for encrypted file
// -upw <string> : set user password for encrypted file
// -html : output text information in HTML format instead of CSV format
//
//Return values:
// 0 is successful and other values are indicate an error occurred during
// conversion.
/////////////////////////////////////

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK(string lpPDFFile, string lpOutFile, string lpOptions);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDKFromMemory(ref byte lpPDFData, int nDataLen, string lpOutFile, string lpOptions);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK_GetHandle(string lpPDFFile, string lpOptions);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK_GetCount(int hPDFParserData);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK_GetImageLength(int hPDFParserData, int nIndex);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK_GetImageData(int hPDFParserData, int nIndex, [MarshalAs(UnmanagedType.LPArray)] byte[] lpData, int nBufLen);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK_GetTextInfoLength(int hPDFParserData, int nIndex);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK_GetTextInfoData(int hPDFParserData, int nIndex, [MarshalAs(UnmanagedType.LPArray)] byte[] lpData, int nBufLen);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK_Free(int hPDFParserData);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK_GetPageCount(string lpPDFFile);

[DllImport("pdfparsersdk2.dll")]
private static extern int VeryPDF_PDFParserSDK_GetAllPagesCount(int hPDFParserData);

1. C# Example:

1.1. Convert PDF file to PNG image and HTML file on disk

private void DiskFile_Click(object sender, EventArgs e)
{
    string appPath = Path.GetDirectoryName(Application.ExecutablePath);
    int nRet;
    string strOptions;
    string strInPDFFile;
    string strOutFile;
    string strLogMsg;
    strInPDFFile = (appPath + "\\example1.pdf");
    strOutFile = (appPath + "\\out.png");
    strOptions = "-$ XXXXXXXXXXXXXXXXXXXX";
    nRet = VeryPDF_PDFParserSDK(strInPDFFile, strOutFile, strOptions);
    strLogMsg = (strInPDFFile + ("\r\n"
        + (strOutFile + ("\r\n"
        + (strOptions + ("\r\n" + ("nRet = " + (nRet.ToString()))))))));
    MessageBox.Show(strLogMsg);
}

1.2. Convert PDF file to PNG image and HTML data in memory

private void Memory_Click(object sender, EventArgs e)
{
    int nRet;
    string strOptions;
    string strInPDFFile;
    string strOutFile;
    int nPDFSDKLib;
    int nCount;
    int nItem;
    byte[] vecImgData = null;
    byte[] vecTxtData = null;
    int nImageDataLen;
    int nTextInfoLen;
    string strLogMsg;
    string appPath = Path.GetDirectoryName(Application.ExecutablePath);
    strInPDFFile = (appPath + "\\example1.pdf");
    strOptions = "-$ XXXXXXXXXXXXXXXXXXXX";
    nPDFSDKLib = VeryPDF_PDFParserSDK_GetHandle(strInPDFFile, strOptions);
    nCount = VeryPDF_PDFParserSDK_GetCount(nPDFSDKLib);
    for (nItem = 0; (nItem <= (nCount - 1)); nItem++)
    {
        nImageDataLen = VeryPDF_PDFParserSDK_GetImageLength(nPDFSDKLib, nItem);
        nTextInfoLen = VeryPDF_PDFParserSDK_GetTextInfoLength(nPDFSDKLib, nItem);
        vecImgData = new byte[nImageDataLen];
        vecTxtData = new byte[nTextInfoLen];
        VeryPDF_PDFParserSDK_GetImageData(nPDFSDKLib, nItem, vecImgData,
            nImageDataLen);
        VeryPDF_PDFParserSDK_GetTextInfoData(nPDFSDKLib, nItem, vecTxtData,
            nTextInfoLen);
        strLogMsg = System.Text.Encoding.ASCII.GetString(vecTxtData);
        MessageBox.Show(strLogMsg.Substring(0, 300));
    }
    VeryPDF_PDFParserSDK_Free(nPDFSDKLib);
    nPDFSDKLib = 0;
}

2. VB.NET Example

2.1. Convert PDF file to PNG image and HTML file on disk

Private Sub DiskFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DiskFile.Click

    Dim nRet As Integer
    Dim strOptions As String
    Dim strInPDFFile As String
    Dim strOutFile As String
    Dim strLogMsg As String
    strInPDFFile = Application.StartupPath() & "\example1.pdf"
    strOutFile = Application.StartupPath() & "\out.png"
    strOptions = "-$ XXXXXXXXXXXXXXXXXXXX"
    nRet = VeryPDF_PDFParserSDK(strInPDFFile, strOutFile, strOptions)
    strLogMsg = strInPDFFile & vbCrLf & strOutFile & vbCrLf & strOptions
        & vbCrLf & "nRet = " & Str(nRet)
    MsgBox(strLogMsg)

End Sub

2.2. Convert PDF file to PNG image and HTML data in memory

Private Sub Memory_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Memory.Click

    Dim nRet As Integer
    Dim strOptions As String
    Dim strInPDFFile As String
    Dim strOutFile As String
    Dim nPDFSDKLib As Integer
    Dim nCount As Integer
    Dim nItem As Integer
    Dim vecImgData() As Byte = Nothing
    Dim vecTxtData() As Byte = Nothing
    Dim nImageDataLen As Integer
    Dim nTextInfoLen As Integer
    Dim strLogMsg As String

    strInPDFFile = Application.StartupPath() & "\example1.pdf"
    strOptions = "-$ XXXXXXXXXXXXXXXXXXXX"
    nPDFSDKLib = VeryPDF_PDFParserSDK_GetHandle(strInPDFFile, strOptions)
    nCount = VeryPDF_PDFParserSDK_GetCount(nPDFSDKLib)
    For nItem = 0 To nCount - 1
        nImageDataLen = VeryPDF_PDFParserSDK_GetImageLength(nPDFSDKLib, nItem)
        nTextInfoLen = VeryPDF_PDFParserSDK_GetTextInfoLength(nPDFSDKLib, nItem)
        ReDim vecImgData(nImageDataLen)
        ReDim vecTxtData(nTextInfoLen)
        VeryPDF_PDFParserSDK_GetImageData(nPDFSDKLib, nItem, vecImgData(0),
            nImageDataLen)
        VeryPDF_PDFParserSDK_GetTextInfoData(nPDFSDKLib, nItem, vecTxtData(0),
            nTextInfoLen)
        strLogMsg = System.Text.Encoding.ASCII.GetString(vecTxtData)
        MsgBox(strLogMsg.Substring(0, 300))
    Next nItem
    VeryPDF_PDFParserSDK_Free(nPDFSDKLib)
    nPDFSDKLib = Nothing

End Sub

2.3. Get page count from PDF file

Private Sub GetPageCount_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GetPageCount.Click

    Dim strOptions As String
    Dim strInPDFFile As String
    Dim HandleId As Integer
    Dim strLogMsg As String
    strInPDFFile = Application.StartupPath() & "\example3_tst1.pdf"
    strOptions = "-$ XXXXXXXXXXXXXXXXX -f 1 -l 78"
    ' strOptions = strOptions & " -noimg"
    HandleId = VeryPDF_PDFParserSDK_GetHandle(strInPDFFile, strOptions)
    Dim cnt As Integer = VeryPDF_PDFParserSDK_GetAllPagesCount(HandleId)
    strLogMsg = "PageCount of """ + strInPDFFile + """ file is:" + vbCrLf
    strLogMsg = strLogMsg + "VeryPDF_PDFParserSDK_GetAllPagesCount() return:"
        + Str(cnt) + vbCrLf
    Dim nPageCount As Integer = VeryPDF_PDFParserSDK_GetPageCount(strInPDFFile)
    strLogMsg = strLogMsg + "VeryPDF_PDFParserSDK_GetPageCount() return:"
        + Str(nPageCount)
    MsgBox(strLogMsg)

End Sub

3. C/C++ Example

3.1. Convert PDF file to PNG image and HTML file on disk

int nRet = VeryPDF_PDFParserSDK("C:\\test.pdf", "C:\\out.png", "-html");

3.2. Convert PDF file to PNG image and HTML data in memory

int Test_PDFParserSDK_3(char *pdf_filename, char *out_filename)
{
    int nRet = 0;
    HANDLE hPDFSDK = PDFParserSDK_GetHandle(pdf_filename, NULL);
    if(hPDFSDK == NULL)
        return nRet;
    int nCount = PDFParserSDK_GetCount(hPDFSDK);
    for(int i = 0; i < nCount; i++)
    {
        int nImageDataLen = PDFParserSDK_GetImageLength(hPDFSDK, i);
        int nTextInfoLen = PDFParserSDK_GetTextInfoLength(hPDFSDK, i);
        vector<BYTE> vecImgData;
        vector<BYTE> vecTxtData;
        vecImgData.resize(nImageDataLen);
        vecTxtData.resize(nTextInfoLen);
        PDFParserSDK_GetImageData(hPDFSDK, i, vecImgData.begin(),
            vecImgData.size());
        PDFParserSDK_GetTextInfoData(hPDFSDK, i, vecTxtData.begin(),
            vecTxtData.size());
    }
    PDFParserSDK_Free(hPDFSDK);
    hPDFSDK = NULL;
    return nRet;
}

Download and purchase PDF Parser SDK

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