Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Using a Visual Basic ActiveX dll in Delphi

Posted on 2000-04-13
5
Medium Priority
?
212 Views
Last Modified: 2010-04-04
I have read how to use a Visual Basic Active X dll in Delphi on Borland;s delphi WEB pages.  I followed there instructions, but recieve this error.

"Project TestConfig.exe raised exception class EOleSysError with message 'Colnitialize has not been called'.  Process Stopped. Use Step or Run to Continue."

Here is my code:
var
  testconfig: Variant;

testconfig := CreateOleObject('Configurator.InferenceEngine');

I have search delphi help and the WEB for this error message with no luck.  Any ideas?



0
Comment
Question by:ailts
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 17

Accepted Solution

by:
inthe earned 400 total points
ID: 2713218
hi,
try add Application.Initialize; in the DPR-File:
 
begin
  Application.Initialize;
  Application.CreateForm(TForm1, Form1);
  Application.Run;
end.


or add at bottom of your unit:

initialization
  CoInitialize(nil)
finalization
  CoUnitinialize;
end.

Regards Barry

0
 
LVL 17

Expert Comment

by:inthe
ID: 2713223
ps,
for second method you may need add "activex" to the uses section.
0
 

Author Comment

by:ailts
ID: 2713354
Why was that line not generated automatically like it was supposed to be?

0
 

Author Comment

by:ailts
ID: 2713383
To clarify my previous comment.  Why was the line "Application.Initialize;" not generated automatically?  I was under the impression that you did not need to edit the project file at all.  this line was all I needed to add to my code to get it to run.
0
 
LVL 17

Expert Comment

by:inthe
ID: 2713393
usually you would use the second method but first also works sometimes.
it is not needed for many apps to have this,for d5 anyway half the apps that need this use comobj which does this inside itself.

0

Featured Post

What’s Wrong with Your Cloud Strategy ?

Even as many CIOs are embracing a cloud-first strategy, the reality is that moving to the cloud is a lengthy process and the end-state is likely to be a blend of multiple clouds—public and private. Learn why multicloud solutions matter in this webinar by Nimble Storage.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this tutorial I will show you how to use the Windows Speech API in Delphi. I will only cover basic functions such as text to speech and controlling the speed of the speech. SAPI Installation First you need to install the SAPI type library, th…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
Video by: ITPro.TV
In this episode Don builds upon the troubleshooting techniques by demonstrating how to properly monitor a vSphere deployment to detect problems before they occur. He begins the show using tools found within the vSphere suite as ends the show demonst…
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Suggested Courses

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question