Changing Label Captions in a FOR Loop

Question:
I’m trying something like this:

 for i:=0 to 1000 do  label1.caption:='I= '+inttostr(i);

but the loop executed so fast, the label doesn’t display anything until the loop is over.

This relates to a file copy method I’m creating. I want to display the name of the file being copied while a progress bar tracks the progress of the file copy. But the label won’t display the text in the loop!

Answer:
Here’s one thing that’s daunting to many people: Loops execute incredibly fast in Delphi. The only way to slow them down is to use theSleep procedure. Your new code would look like this:

for i:=0 to 1000 do begin  label1.caption:='I= '+inttostr(i);  Sleep(200); //sleep for 200 milliseconds before going on.end;

That’s the only way you can slow the loop down. Otherwise, the loop will finish execution in the blink of an eye.

Share the Post:
Share on facebook
Share on twitter
Share on linkedin

Overview

The Latest

Top 5 B2B SaaS Marketing Agencies for 2023

In recent years, the software-as-a-service (SaaS) sector has experienced exponential growth as more and more companies choose cloud-based solutions. Any SaaS company hoping to stay ahead of the curve in this quickly changing industry needs to invest in effective marketing. So selecting the best marketing agency can mean the difference

technology leadership

Why the World Needs More Technology Leadership

As a fact, technology has touched every single aspect of our lives. And there are some technology giants in today’s world which have been frequently opined to have a strong influence on recent overall technological influence. Moreover, those tech giants have popular technology leaders leading the companies toward achieving greatness.

iOS app development

The Future of iOS App Development: Trends to Watch

When it launched in 2008, the Apple App Store only had 500 apps available. By the first quarter of 2022, the store had about 2.18 million iOS-exclusive apps. Average monthly app releases for the platform reached 34,000 in the first half of 2022, indicating rapid growth in iOS app development.