Solved

selected in TEdit

Posted on 2013-01-29
4
579 Views
Last Modified: 2013-01-31
How can i test to see if something is selected (highlighted) in a TEdit ?  I am using a TEdit for numbers only
0
Comment
Question by:ChLa
[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
  • 2
4 Comments
 
LVL 1

Accepted Solution

by:
B-o-l-d earned 500 total points
ID: 38833934
hi chla,

you could test the member function SelLength. if you find something different than 0, you have selected text:

if myEdit.SelLength > 0 then begin
   DoSomething;
end;

refer also to SelStart and SelectAll.

cheers,
bold
0
 

Author Comment

by:ChLa
ID: 38834148
That should work. i will test it tomorrow and let you know. Thank you.

I had found SelectAll. What is SelStart ? Why are none of these things explained in the help files ?
0
 
LVL 27

Expert Comment

by:Sinisa Vuk
ID: 38834169
SelectAll is for highlight all text in edit and SelStart is similar to SelLength, it is greater than zero if you select some text in edit and represents start where selecting begins. It is in chars units. Some text is highlighted form SelStart and is long as SelLength.
0
 
LVL 1

Expert Comment

by:B-o-l-d
ID: 38834468
just to clarify:

SelectAll is a command (procedure/function) to select the whole text in the edit.

SelStart / SelLength are properties to read or write to look, whats selected or to set a selection. hereby points SelStart to the first character in the edit component, that is selected and SelLength tells you how many characters are selected.

copy(MyEdit.Text, MyEdit.SelStart, MyEdit.SelLength) gives you exactly the selected text from a edit box.

cheers,
bold
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

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

Suggested Solutions

In this tutorial I will show you how to use the Windows Speech API in Delphi. I will only cover basic functions such as text to speech and controlling the speed of the speech. SAPI Installation First you need to install the SAPI type library, th…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

696 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