Solved

Stop A Form from Closing

Posted on 1997-08-15
2
159 Views
Last Modified: 2010-04-06
I want to stop a MDI form from closing unless certain criteria is set.  I also want to prevent a form from closing if Ctrl-F4 is pressed.  I know I can stop this two ways, either writing code on the onCloseQuery or setting the Crtl-F4 key press to zero.  My problem is, 1) after setting the criteria in the onCloseQuery - what is the code that actually STOPS the form from closing and 2) how do you set CTRL-F4 to zero?  I'm hoping writing code in the onCloseQuery stops a CTRL-F4 key press, but if it doesn't, I need answers to both questions.
0
Comment
Question by:d4jaj1
2 Comments
 
LVL 1

Accepted Solution

by:
peter_vc earned 20 total points
ID: 1341567
procedure TMDIChild.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  { if form not allowed to close then }

     Action := caNone;

  { else }

     Action := caFree;

end;

This should do the trick.

0
 
LVL 3

Author Comment

by:d4jaj1
ID: 1341568
Great Job.  I've asked this question, what seems to be a vey simple question four times, each receiving a wrong answer.  Thanks for finally giving me an answer that works!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
This Micro Tutorial will give you a basic overview how to record your screen with Microsoft Expression Encoder. This program is still free and open for the public to download. This will be demonstrated using Microsoft Expression Encoder 4.

896 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

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now