Solved

Registry

Posted on 2002-04-30
4
165 Views
Last Modified: 2010-04-04
How can i add a key such that it is listed after a numeral. Please see example.

If the programme sees that the string 'File1' is located in

Reg.RootKey:=HKEY_LOCAL_MACHINE;
Reg.OpenKey('SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon', False);

then it will write a string ('File2', 'Yes')


In general, If the programme sees that the string 'File[X]' is located in

Reg.RootKey:=HKEY_LOCAL_MACHINE;
Reg.OpenKey('SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon', False);

then it will write a string ('File[X+1]', 'Yes'). i wass check if the string 'File[X]' exists, if it does, then the programme will check for 'File[X+1]' to see if it has been created and will check until it finds File[Y]' that is not created and will proceed to write the data for it.
0
Comment
Question by:tyfing
4 Comments
 
LVL 5

Accepted Solution

by:
alanwhincup earned 50 total points
ID: 6981107
This should work:

uses
  ..., Registry, ...;

...

procedure TForm1.Button1Click(Sender: TObject);
var
  Reg : TRegistry;
  I : Integer;
begin
  I := 1;
  Reg := TRegistry.Create;
  try
    Reg.RootKey := HKEY_LOCAL_MACHINE;
    if Reg.OpenKey('SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon', False) then
    begin
      while Reg.ValueExists('File' + IntToStr(I)) do
        Inc(I);
      Reg.WriteString('File' + IntToStr(I), 'Yes');
    end
    else
      ShowMessage('Key not found.');
    Reg.CloseKey;
  finally
    Reg.Free;
  end;
end;

Cheers,

Alan
0
 

Author Comment

by:tyfing
ID: 6982450
what does
inc(I);
do ?
0
 
LVL 3

Expert Comment

by:hagur
ID: 6982526
inc is a function which increases a given variable by 1.

i := 1;

inc(i);

i is now 2.
0
 
LVL 6

Expert Comment

by:Stuart_Johnson
ID: 6982690
Inc has an overload as well which allows you to specify an integer to increment by.  For instance, to increase a value by 10, use:

 I := 1;
 inc(I, 10).  

now I = 11

Stu :)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Have you ever had your Delphi form/application just hanging while waiting for data to load? This is the article to read if you want to learn some things about adding threads for data loading in the background. First, I'll setup a general applica…
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…
This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…
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 …

932 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

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now