PDFlib Text Extraction Toolkit (TET) Manual

3.4 COM Binding
Installing the TET COM edition. TET can be deployed in all environments that support
COM components. Installing TET is an easy and straight-forward process. Please note
the following:
> If you install on an NTFS partition all TET users must have read permission for the
installation directory, and execute permission for
...\TET 3.0\bind\COM\bin\tet_com.dll.
> The installer must have write permission for the system registry. Administrator or
Power Users group privileges will usually be sufficient.
Exception Handling. Exception handling for the TET COM component is done according
to COM conventions: when a TET exception occurs, a COM exception will be raised
and furnished with a clear-text description of the error. In addition the memory allocated
by the TET object is released. The COM exception can be caught and handled in the
TET client in whichever way the client environment supports for handling COM errors.
Using the TET COM Edition with .NET. As an alternative to the TET.NET edition (see
Section 3.6, ».NET Binding«, page 27) the COM edition of TET can also be used with .NET.
First, you must create a .NET assembly from the TET COM edition using the tlbimp.exe
utility:
tlbimp tet_com.dll /namespace:tet_com /out:Interop.tet_com.dll
You can use this assembly within your .NET application. If you add a reference to tet_
com.dll from within Visual Studio .NET an assembly will be created automatically. The
following code fragment shows how to use the TET COM edition with C#:
using TET_com;
...
static TET_com.ITET tet;
...
tet = New TET();
...
All other code works as with the .NET edition of TET.
3.4 COM Binding 25