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Topic: A syntax error occurred trying to evaluate a query string
Conf: (P-PDF) Developers, Msg: 133714
From: neoh
Date: 6/1/2005 12:37 PM

I try to wrap the .net stream object into OLE object in VB.Net. But not sure about this:

Declare Function CreateStreamOnHGlobal Lib "OLE32" _
(ByVal hGlobal As Integer, _
ByVal fDeleteOnRelease As Boolean, _
ByRef ppstm As UCOMIStream) As Integer

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
' Load the file into a stream.
Dim fsIn As New FileStream("C:\\test.pdf", FileMode.Open, FileAccess.Read)

' Create a MemoryStream to hold the data.
Dim ms As New MemoryStream

' Create a reader for the data.
Dim r As New BinaryReader(ms)

' Get length of the file.
Dim fileLen As Integer = Convert.ToInt32(ms.Length)

' Create a buffer for the data.
Dim fileBytes(fileLen) As Byte

' Read the data from Memory
For i As Integer = 0 To fileLen - 1
fileBytes(i) = r.ReadByte

' declare the COM stream
Dim iStream As UCOMIStream

' Create the stream (with no initial memory allocated)
CreateStreamOnHGlobal(0, True, iStream)

' Write the data from buffer into COM Stream
iStream.Write(fileBytes, fileLen, System.IntPtr.Zero)

' Set size of COM stream

' PDF Control
Dim obj As New XpdfText.XpdfTextClass
obj.convertToTextFile(1, 3, "C:\\test.txt")

End Sub

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