CODEWITHSUNDEEP
delphidelphi-xe2
user1556433
user1556433

Reputation:

How to call events in delphi without user intervention?

I have one button on my form. Following is the click event of that button

procedure Form1.btnOKClick(Sender: TObject);
begin
//Do something
end;

This event will be called only when I click the button, right?

How can I call this event automatically without any user intervention?

Upvotes: 6

Views: 19728

Answers (3)

David Heffernan
David Heffernan

Reputation: 612794

The best way to invoke the OnClick event handler attached to a control is to call the Click method on the control. Like this:

btnOK.Click;

Calling the event handler directly forces you to supply the Sender parameter. Calling the Click method gets the control to do all the work. The implementation of the windows message handler for a button click calls the Click method.

But I second the opinion expressed in whosrdaddy's answer. You should pull out the logic behind the button into a separate method.

Upvotes: 20

whosrdaddy
whosrdaddy

Reputation: 11860

Do not put your businesslogic into event handlers. This will make your code unreadable when the application grows larger.

Normally you would do this:

procedure TForm1.DoSomething;
begin
 // do something
end;

procedure TForm1.btnOKClick(Sender: TObject);
begin
 DoSomething;
end;

then all you need to do is call DoSomething from other parts in your code

Upvotes: 17

LU RD
LU RD

Reputation: 34889

You can call this event in code like any other method.

...
btnOkClick(Self.btnOk); // Sender in this case is the btnOk
...

The Sender can be whatever object you like or nil.

Upvotes: 8

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