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Error "EOleSysError. Unregistered class"

Posted on 1997-10-05
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Last Modified: 2006-11-17
Hello

Trying start the program HttpDemo, which is included in the Delphi 3.0 demos, on the computer, where Delphi 3.0 is not installed, the computer gives message " Exception EOleSysError in module HTTPDEMO.EXE at 00033235.
Unregistered class." The program Internet Explorer is installed at this computer and it is connected to Internet without problems. How can I start the programs written on Delphi 3.0 for work in Internet on the computers, where Delphi 3.0 is not installed ?

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Question by:Alexey090397
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JimBob091197 earned 50 total points
ID: 1346832
Delphi's Internet components are OCX controls.  It sounds like they are not registered on your PC.  

If you open the HTTP sample, click on the HTTP sample and press F1, you should see the Delphi internet help.  Click "Help Topics" and search for "Redistribution of ActiveX Controls."  This should bring up a window with a button "Distribution Files."  Click this button for a list of the files that are needed.  

In addition, search for "Installation Process" in this help file for further registration information.  More information can be found under "File Descriptions."

N.B.  You must open the correct help file in Delphi.  The easiest way to do this is to open up an internet demo (e.g. the HTTP one you mentioned), click on the internet component, and press F1.  Alternatively, you can open nia.hlp in your Windows System folder.

JB
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by:Alexey090397
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