Expiring Today—Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Sleeping in Delphi 1.0

Posted on 1998-03-06
1
Medium Priority
?
269 Views
Last Modified: 2010-04-06
How do I make my application sleep for a number of seconds in Delphi 1.0?
0
Comment
Question by:nickcadge
[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
1 Comment
 
LVL 8

Accepted Solution

by:
ZifNab earned 150 total points
ID: 1360205
Hi nickcadge

Delay, pause, wait


How do you get your Delphi app to do nothing for a period of time?
A:
Uses
     ....
     Winprocs
     ....;

Procedure delay(millisecs : longint);   { delay for given milliseconds }
var
     endtime   : longint;
begin
     endtime := gettickcount + millisecs;
     while endtime - gettickcount < 0 do
          Application.ProcessMessages;
     end; { delay }

A:
procedure Wait;
var oldTime: LongInt;
begin
  oldTime := GetCurrentTime;
  repeat
   { whatever}
  until GetCurrentTime - oldTime >= yourDelay;
end;

To which I would add:

As current Windows does not have pre-emptive multi-tasking,
it's normally good event-handling manners to allow Windows
to jump in to the gap, so the { whatever } above should
usually read:

          Application.ProcessMessages;


A:
Procedure Delay(DTime : LongInt);
Var
  L : LongInt;
Begin
  L := GetTickCount;
  While (Abs(L-GetTickCount) < DTime) do;
End;

The usage is "Delay(1000'th of a second)", for example
Delay(5000) will wait 5 seconds.

Regards, Zif.
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

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

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…
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…
This course is ideal for IT System Administrators working with VMware vSphere and its associated products in their company infrastructure. This course teaches you how to install and maintain this virtualization technology to store data, prevent vuln…
In response to a need for security and privacy, and to continue fostering an environment members can turn to for support, solutions, and education, Experts Exchange has created anonymous question capabilities. This new feature is available to our Pr…

719 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