Solved

Showing only one image in a TSpeedButton

Posted on 2001-09-15
9
558 Views
Last Modified: 2010-04-06
Hi

When I load a glyph into a TSpeedButton at runtime, and it contains more than one image, it wants to display them all at the same time.  How do I get the button to display only the first image?

John
0
Comment
Question by:jdthedj
[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
9 Comments
 
LVL 27

Expert Comment

by:kretzschmar
ID: 6484439
adjust the numglyphs property to the count of images of your bitmap
0
 
LVL 8

Expert Comment

by:TOndrej
ID: 6484442
set NumGlyphs to 4, I guess
0
 
LVL 3

Expert Comment

by:marcoszorrilla
ID: 6484445
Perhaps with this code?

These lines of code load a four-image bitmap into the Glyph property of a speed button, and specify the appropriate value for the NumGlyphs property:

SpeedButton1.Glyph.LoadFromFile('MYBITMAP.BMP');

SpeedButton1.NumGlyphs := 4;
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 3

Author Comment

by:jdthedj
ID: 6485074
Thanks for the replies.

I have tried using the NumGlyphs property, but I still find that the speedbutton tries to load all the images at once.  This is my code:

GlyphBtn[UpTo].NumGlyphs := 1;
GlyphBtn[UpTo].Glyph.LoadFromFile(DirInfo.Name);

(I am using FindFirst etc to locate the bitmaps). I also tried setting NumGlyphs after loading the image, but I still get the same result.  Any ideas?

John
0
 
LVL 27

Expert Comment

by:kretzschmar
ID: 6485082
to repeat

>adjust the numglyphs property to the count of images of your bitmap

contains your bitmap 4 pictures then set NumGlyphs to 4 -> one image is shown on the speedbutton
contains your bitmap 2 pictures then set NumGlyphs to 2 -> one image is shown on the speedbutton

meikl ;-)

0
 
LVL 3

Author Comment

by:jdthedj
ID: 6485330
Thanks Meikl

How do I know how many images there are in the bitmap?

John
0
 
LVL 1

Accepted Solution

by:
Fraction earned 20 total points
ID: 6485773
Suppose the glyphs width and height are the same, then you might do something like this:

NumGlyph := round(Bitmap.Width / Bitmap.Height);
0
 
LVL 3

Author Comment

by:jdthedj
ID: 6491729
Hello Fraction

I never realised it would be so complicated!  You gave me the right idea.  I divided the width by 24 (an average size) and used the integer result as the answer.  It seem to work OK.  I am surprised there is not a property called ImageCount or something.

John
0
 
LVL 27

Expert Comment

by:kretzschmar
ID: 6492527
i guessed you more clever, my mistake
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying 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

A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
Introduction I have seen many questions in this Delphi topic area where queries in threads are needed or suggested. I know bumped into a similar need. This article will address some of the concepts when dealing with a multithreaded delphi database…
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …
Are you ready to implement Active Directory best practices without reading 300+ pages? You're in luck. In this webinar hosted by Skyport Systems, you gain insight into Microsoft's latest comprehensive guide, with tips on the best and easiest way…

733 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