Mega Code Archive
Create a Component at Runtime
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Title: Create a component at runtime
Question: How to use the create-constructor and the owner and parent properties
to create a comoponent at runtime.
Answer:
When you create visual controls at runtime it's just important
to assign the parent property and to use the method SetBounds, so that
the control will be visible.
type
TForm1 = class(TForm)
protected
MyLabel: TLabel;
procedure LabelClick(Sender: TObject);
procedure CreateControl;
end;
procedure TForm1.LabelClick(Sender: TObject);
begin
(Sender as Label).Caption := ...
end;
procedure TForm1.CreateControl;
var
ALeft, ATop, AWidth, AHeight: Integer;
begin
ALeft := 10;
ATop := 10;
AWidth := 50;
AHeight := 13;
MyLabel := TLabel.Create(Self);
MyLabel.Parent := Self;
MyLabel.Name:='LabelName';
MyLabel.SetBounds(ALeft, ATop, AWidth, AHeight);
MyLabel.OnClick := LabelClick;
end;
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