Create TTimer on run time in Delphi

To create a TTimer at runtime in Delphi, you can use the following steps:

1. Create a Form:

   Create a new VCL Forms Application in Delphi.

2. Add a Button and a Timer:

   Drop a TButton and a TTimer component onto the form from the Tool Palette.

3. Add Code to Create TTimer Dynamically:

   Add code to the form’s unit to create a TTimer dynamically when the button is clicked.

   Delphi/Pascal

   unit MainForm; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls; type TForm1 = class(TForm) Button1: TButton; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TimerOnTimer(Sender: TObject); begin ShowMessage(‘Timer event!’); end; procedure TForm1.Button1Click(Sender: TObject); var MyTimer: TTimer; begin // Create a TTimer dynamically MyTimer := TTimer.Create(Self); MyTimer.Interval := 1000; // Set the interval in milliseconds (e.g., 1000 ms = 1 second) MyTimer.OnTimer := TimerOnTimer; MyTimer.Enabled := True; end; end.

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   unit MainForm;   interface   uses   Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes,   Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls;   type   TForm1 = class(TForm)     Button1: TButton;     procedure Button1Click(Sender: TObject);   private     { Private declarations }   public     { Public declarations }   end;   var   Form1: TForm1;   implementation   {$R *.dfm}   procedure TimerOnTimer(Sender: TObject); begin   ShowMessage(‘Timer event!’); end;   procedure TForm1.Button1Click(Sender: TObject); var   MyTimer: TTimer; begin   // Create a TTimer dynamically   MyTimer := TTimer.Create(Self);   MyTimer.Interval := 1000; // Set the interval in milliseconds (e.g., 1000 ms = 1 second)   MyTimer.OnTimer := TimerOnTimer;   MyTimer.Enabled := True; end;   end.

   In this example, clicking Button1 dynamically creates a TTimer with a specified interval and assigns an event handler (TimerOnTimer) to the OnTimer event. The TimerOnTimer procedure shows a message when the timer fires.

   Remember to adjust the code based on your specific requirements, including setting the desired interval and implementing your own logic in the OnTimer event handler.