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Simple HH:MM:SS counter

Posted on 2003-11-14
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Last Modified: 2010-04-05
How can I write a simple HH:MM:SS counter to time a procedures duration ?. The counter does not have to be very accurate just a start/stop counter to the nearest second or so. I would like a coded answer without using any components.

Thanks
Paul.
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Question by:pr_wainwright
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6 Comments
 
LVL 2

Expert Comment

by:DeNavigator
ID: 9749186
procedure ProcedureName;
var
  TotalTime, StartTime: Cardinal;
begin
  StartTime := GetTickCount;
  // Here your code
  TotalTime := GetTickCount - StartTime;
  ShowMessage('It took ' + IntToStr(TotalTime) + ' msec.');
end;

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Author Comment

by:pr_wainwright
ID: 9749505
DeNavigator,
 Sorry, maybe my question was not very clear. I was hoping for say a TLabel caption to update in real time as the procedure executed e.g. '00:00:01' - '00:00:02'... etc.

Thanks
Paul.
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LVL 8

Accepted Solution

by:
gmayo earned 125 total points
ID: 9749566
Drag a TLabel and a TTimer onto your form. Then the following code will update the label with the time.

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Timer1: TTimer;
    procedure Timer1Timer(Sender: TObject);
  private
    { Private declarations }
  public
            { Public declarations }
            Clock : integer;
      end;

var
      Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Timer1Timer(Sender: TObject);
begin
      Inc(Clock);
      Label1.Caption := Format('%2.2d:%2.2d:%2.2d', [(Clock div 3600) mod 24, (Clock div 60) mod 60, Clock mod 60]);
end;

end.


Geoff M.
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LVL 8

Expert Comment

by:gmayo
ID: 9749574
PS - if you are doing a processor-intensive procedure, you may want to call Application.ProcessMessages every now and again (at *least* once per second) to allow the timer to trigger.

Geoff M.
0
 
LVL 2

Expert Comment

by:DeNavigator
ID: 9749678
I created once a timer-component. If you like the code just post a comment with your email and i'll send you the sources. if you understan dutch you could have a look at this: http://www.nldelphi.com/cgi-bin/articles.exe/ShowArticle?ID=10257
I wrote this article and is describes the stopwatch component. (in dutch :) )
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LVL 1

Author Comment

by:pr_wainwright
ID: 9750016
Geoff,
        Your code is exactly what I required. Simple & works perfectly.

Thanks
Paul.

P.S. Thanks also to DeNavigator.
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