Solved

Execute procedure, wait until finished, resume.

Posted on 2000-05-05
4
409 Views
Last Modified: 2010-04-04
I have a procedure that loads settings for colors...

I call the procedure, then I use RichEdit1.Selattributes.Color like so:

MyProcedure; {Gets MyInt - Color for text}
RichEdit1.Selattributes.Color := MyInt;
RichEdit1.Lines.Add('MyText');

The problem is, the "MyProcedure" isn't done before the app moves to the next line!

I've tried:
MyProcedure; {Gets MyInt - Color for text}
Application.ProcessMessages;
RichEdit1.Selattributes.Color := MyInt;
RichEdit1.Lines.Add('MyText');


But that doesn't help!

How can I call the procedure, WAIT until it's finished, then call the rest without writing an entire new procedure?


-Psylord
0
Comment
Question by:Psylord
  • 2
4 Comments
 
LVL 2

Accepted Solution

by:
kotik earned 0 total points
ID: 2783770
Hi!
Do you use another thread in your procedure? If not - your app cannot move to the next line until MyProc is finished.
If you are using threads you can use different synchronization objects (Events, Mutexes, Semaphores) to wait until the proc is finished.

F.e.:
uses
  SyncObjs;
....
{ Create Event somewhere }
  TermEvent := TEvent.Create(nil, True, False, '');

{ In the end of MyProcedure add this code: }
    TermEvent.SetEvent;

{ Change the call as this }
MyProcedure; {Gets MyInt - Color for text}
TermEvent.WaitFor(WAIT_TIMEOUT); // or INFINITE
RichEdit1.Selattributes.Color := MyInt;
RichEdit1.Lines.Add('MyText');

Regadrs,
  Kot




0
 

Author Comment

by:Psylord
ID: 2783776
Thanks!

I think the problem is that I had it in the create event (when the form might not even have a handle yet!)..

But this code looks useful.... Thanks!
0
 
LVL 2

Expert Comment

by:kotik
ID: 2783780
And don't forget to destroy the event object in the end:

TermEvent.Free;
0
 
LVL 2

Expert Comment

by:hhamster
ID: 2783883
I don't agree with you. It must do 'MyProcedure' 1st, and then do the rest. Try debugging and look how it moves. It can only do so if 'MyProcedure' is a thread.

But where's the return value of it? Shouldn't it the 1st line say:
MyInt := MyProcedure;
and then use the value in the next line.
0

Featured Post

ScreenConnect 6.0 Free Trial

Want empowering updates? You're in the right place! Discover new features in ScreenConnect 6.0, based on partner feedback, to keep you business operating smoothly and optimally (the way it should be). Explore all of the extras and enhancements for yourself!

Question has a verified solution.

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

Suggested Solutions

The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
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…
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.
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

809 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