Solved

How to destroy an activex object?

Posted on 2011-03-16
3
913 Views
Last Modified: 2012-05-11
Hi,

I am using an imaging ActiveX control called TImageMan.  I've placed one TImageMan control on the form.  From that  component, I create many instances "on the fly."  I add a row and column number to the end of "IM" ( e.g IM11, IM12, IM21,IM22) to make each instance unique.  See code  below.


How do I destroy the instances of TImageMan (IM11, IM12, IM21, IM22, etc...?) so I can rerun the program multiple times without closing it down?

Thanks.
type
TForm1 = class(TForm)
    IM: TImageMan;

procedure....
var
  IM : TImageMan;
.
.
.
IM :=  TImageMan.Create(self);
IM.Name := 'IM'+IntToStr(i)+IntToStr(j);
.
.
end;

Open in new window

0
Comment
Question by:IT79637
[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 Comments
 
LVL 24

Accepted Solution

by:
jimyX earned 250 total points
ID: 35148994
Use for loop and free all of them:

procedure....
var
  IM : TImageMan;
.
.
.
IM :=  TImageMan.Create(self);
IM.Name := 'IM'+IntToStr(i)+IntToStr(j);
.
.
//var
//  k,l : integer;
for k := 1 to i do
  for l := 1 to j do
    begin
      (FindComponent('IM'+IntToStr(k)+IntToStr(l)) as TImageMan).Free;
    end;
end;
0
 
LVL 32

Expert Comment

by:Ephraim Wangoya
ID: 35149767

You dont need to destroy the components since the are owned by the form

IM :=  TImageMan.Create(self);

When the form is destroyed, the component is destroyed as well, so you dont have to worry about it
0
 
LVL 1

Author Closing Comment

by:IT79637
ID: 35160118
Works for me!
Thanks!
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
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…

752 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