Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Stopping app in recursive loop?

Posted on 1998-01-30
5
Medium Priority
?
149 Views
Last Modified: 2010-04-04
Can someone tell me how to stop an application when a recursive loop is running? For example, if I am recursively reading through an entire disk (which takes a long time), and I click the "Close" button, nothing happens.  I want to be able to stop everything and just shut down. I thought I had this figured out, but to no avail. :-)  
0
Comment
Question by:jexd99
5 Comments
 
LVL 4

Accepted Solution

by:
d003303 earned 150 total points
ID: 1358031
Yo,

define a global break-flag that is false initially. Set it to true in the OnCloseQuery-event of the form.
In your recursive loop, add the line Application.ProcessMessages and check for the break-flag. Exit the loop if the flag is true.

Slash/d003303
0
 
LVL 3

Expert Comment

by:Matvey
ID: 1358032
You can do it with threads. -Look at the sorting example taht D3 or D2 has in the \demos\threads dir.
If you want to terminate a thread you just call the .Terminate method and that means taht your recursive proc will also terminate.

Good luck!
Matvey
0
 

Expert Comment

by:michael2010898
ID: 1358033
If the program responds to the button click you
can use application.terminate
If not then use thread for the procedure and when the user
clicks the button use .Terminate if you want to stop
the procedure or use .Supend to supend it and then you will be
able to continue it with .Resume.


0
 
LVL 4

Expert Comment

by:d003303
ID: 1358034
Threads might be a better solution than mine. You could also recurse through several disks the same time, just start a second instance of the thread object. Like Matvey said, the sorting example is worth a look.
If want to use threads, don't hesitate to reject my answer.

Slash/d003303
0
 

Author Comment

by:jexd99
ID: 1358035
Thanks for the info. :)
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

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

Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
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…
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…
When cloud platforms entered the scene, users and companies jumped on board to take advantage of the many benefits, like the ability to work and connect with company information from various locations. What many didn't foresee was the increased risk…
Suggested Courses

927 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