Using OCX in .NET

[=?Utf-8?B?QWxoYW1icmEgRWlkb3MgS2lxdWVuZXQ=?=]

Hi misters,

I try use an OCX in my Winforms application with VS 2005.

The OCX is a PDF Viewer (XPdfViewer)

I have several issues about it:

1. I add reference to COM, and VS generate Interop.XpdfViewer.dll

When I call to method of COM, I get this error:

ErrorCode -2147467259

Exception Details: System.Runtime.InteropServices.COMException: Error
HRESULT E_FAIL has been returned from a call to a COM component

One question, how I get a detail description of a COMException ?? Any help
please.
2. I Choose Items in Toolbox and select COM (OCX). The VStudio generate
AxInterop.XpdfViewer.dll.

(which is the difference AxInterop.XpdfViewer.dll and
Interop.XpdfViewer.dll???)

For a Component Control, in design, the control XPdfViewer NOT appears in
toolbox, why ???

For Forms, in design, the control XPdfViewer appears in toolbox
For UserControl, in design, the control XPdfViewer appears in toolbox
Any suggestion about it ? Thanks in advance.
--
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[Dick Grier]

Hi,

How did you add the reference (and generate the interop dll)? The "correct"
way to do this is to right-click the Toolbox, select "Choose Items" from the
drop-down menu, Select the COM Components tab, the browse to the location of
the OCX. Select it, and click the OK button. The OCX will now appear in
the Toolbox. Double-click the Toolbox icon for the control, and it will be
dropped on an open form, and the Interop dll will be created. You then
should be able to use it without issue.

If this doesn't work, I think you may have to use some other control,
preferably a .NET assembly.

--
Richard Grier, MVP
Hard & Software
Author of Visual Basic Programmer's Guide to Serial Communications, Fourth
Edition,
ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March
2006.
See www.hardandsoftware.net for details and contact information.