red_2
asked on
Arrays of visual components
Is there an easy way to create an array of visual components? I'm going to use a lot of buttons, and I want to arrange them in an array so I don't need to write an eventhandler for each one of them. Is this possible?
Yo,
you could also use the components/controls property of the owner/parent component. If you e.g. arrange all buttons on a TPanel, use its controls property array to walk through all buttons. Assign the event handler at run-time like JimBob said. To filter the button that fired the event in the handler, use
procedure TForm1.MyClickEvent(Sender
begin
if Sender is TButton then
begin
if TButton(Sender).Caption = // whatever, or use its tag property
end;
end;
Slash/d003303
you could also use the components/controls property of the owner/parent component. If you e.g. arrange all buttons on a TPanel, use its controls property array to walk through all buttons. Assign the event handler at run-time like JimBob said. To filter the button that fired the event in the handler, use
procedure TForm1.MyClickEvent(Sender
begin
if Sender is TButton then
begin
if TButton(Sender).Caption = // whatever, or use its tag property
end;
end;
Slash/d003303
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rickpet,
thx to re-fomulate my comment to your answer.
thx to re-fomulate my comment to your answer.
d003303 Had nothing to do with your answer...I was typing up code...never saw your comment...
Rick
Rick
E.g.
MyList := TList.Create;
MyList.Add(Button1);
MyList.Add(Button2);
Etc...
You can then go through the list and set each buttons event handler to the same event.
E.g.
for i := 0 to MyList.Count - 1 do
TButton(MyList[i]).OnClick
Cheers,
JB