Solved

Dupelicate Instantces

Posted on 2000-04-05
10
146 Views
Last Modified: 2010-04-04
How do I check my program for duplicate instantaces??? Thanks!
0
Comment
Question by:nafa2221
10 Comments
 
LVL 13

Accepted Solution

by:
Epsylon earned 50 total points
ID: 2688152
On this page you can see how to do that:

http://www.gnomehome.demon.nl/uddf/pages/api.htm#api0
0
 

Author Comment

by:nafa2221
ID: 2688676
that was somewhat confusing, can u post an example and where I would post the code, also can u tell me howto get to the area I am supposed to post my code? Thanks!!!
0
 
LVL 27

Expert Comment

by:kretzschmar
ID: 2688770
hi nafa2221,

a simple method
(modification in the dpr-file)

program itTimer;

uses
  windows,
  Forms,
  Dialogs,
  itGlobal in 'itGlobal.pas',
  ufrmTIMER in 'ufrmTIMER.pas' {frmTIMER},
  doitAPI in 'doitAPI.pas',
  ufrmTIMERUpdate in 'ufrmTIMERUpdate.pas' {frmTimerUpdate},
  ufrmTIMERShow in 'ufrmTIMERShow.pas' {frmTimerShow},
  ufrmTimerSub in 'ufrmTimerSub.pas' {frmTimerSub},
  ufrmErrorReport in 'ufrmErrorReport.pas' {frmErrorReport},
  ufrmprobtimer in 'ufrmprobtimer.pas' {frmProblemeTimer};

{$R *.RES}

var StartUpH : THandle;

begin
  StartUpH := FindWindow(PChar('TfrmTIMER'),PChar('inTIME · Timer'));
  if (StartUpH <> 0) and (ParamStr(1) <> 'Test') then  //no testenviroment
  begin
//    ShowWindow(StartUpH,SW_SHOW);
    MessageDlg('itTimer ist bereits gestartet!',mtInformation,[mbOK],-1);
  end
  else
  begin
    Application.Initialize;
    Application.Title := 'inTIME · Timer';
    Application.CreateForm(TfrmTIMER, frmTIMER);
  Application.CreateForm(TfrmTimerUpdate, frmTimerUpdate);
  Application.Run;
  end;
end.

meikl
0
Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

 
LVL 1

Expert Comment

by:fulvio_brasil
ID: 2688776
Try this (put the code in .DPR file)

var Handle1: HWND;

begin
  Application.Initialize;
  Handle1 := FindWindow('TfrmMain','Caption');
  if (Handle1 = 0) then begin
    Application.CreateForm(TfrmMain, frmMain);
    ...
    Application.Run;
  end
  else
    ShowMessage('App already running!');
end.

Obs: 'TfrmMain' = Class of Main Form
     'Caption' = Caption on Main Form

cheers,

Fulvio.
0
 
LVL 13

Expert Comment

by:Epsylon
ID: 2688788
Fulvio, would you mind to withdraw your answer since other solutions have been given before you...?
0
 
LVL 1

Expert Comment

by:fulvio_brasil
ID: 2690289
No problem Epsylon!

What happend was when I posted it I didn't see the other solution (just 3 min. before)

See you,

F.
0
 
LVL 13

Expert Comment

by:Epsylon
ID: 2690340
Yup, I see   :o)
0
 
LVL 1

Expert Comment

by:fulvio_brasil
ID: 2692099
Hi Epsylon, please, could you answer me why a lot of people offers the answer like a comment, what's the advantage?
And about the point? How they won the points?

I'm new in the site and never understood it :o)

Thanks in advance,

Fulvio.
0
 
LVL 13

Expert Comment

by:Epsylon
ID: 2697569
Fulvio, when you're sure that the answer is correct AND your're the first one then you could submit it as answer. But when someone else has already given a (partial) solution, submit it as comment. This is an unwritten(?) rule here at EE...
0
 
LVL 1

Expert Comment

by:fulvio_brasil
ID: 2698956
Thanks Epsylon! :o)
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Suggested Solutions

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…
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…
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

773 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