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    <p>You can propably use the <a href="https://stackoverflow.com/questions/120858/replace-visual-component-at-runtime-in-delphi-win32#122915">CLoneProperties routine from the answer</a> to "<a href="https://stackoverflow.com/questions/120858/replace-visual-component-at-runtime-in-delphi-win32">Replace visual component at runtime</a>", after you have created the dup components in a loop thru the parent's controls. </p> <p><strong>Update</strong>: some working code.... </p> <p>. I assume from your question that you want to duplicate the Controls that are contained in a WinControl (as a Parent is a TWinControl).<br> . As I did not know if you also wanted to hook the duplicated controls with the same Event Handlers as the originals, I made an option for that.<br> . And you may want to give a proper meaningful Name to the duplicated controls. </p> <pre><code>uses TypInfo; procedure CloneProperties(const Source: TControl; const Dest: TControl); var ms: TMemoryStream; OldName: string; begin OldName := Source.Name; Source.Name := ''; // needed to avoid Name collision try ms := TMemoryStream.Create; try ms.WriteComponent(Source); ms.Position := 0; ms.ReadComponent(Dest); finally ms.Free; end; finally Source.Name := OldName; end; end; procedure CloneEvents(Source, Dest: TControl); var I: Integer; PropList: TPropList; begin for I := 0 to GetPropList(Source.ClassInfo, [tkMethod], @PropList) - 1 do SetMethodProp(Dest, PropList[I], GetMethodProp(Source, PropList[I])); end; procedure DuplicateChildren(const ParentSource: TWinControl; const WithEvents: Boolean = True); var I: Integer; CurrentControl, ClonedControl: TControl; begin for I := ParentSource.ControlCount - 1 downto 0 do begin CurrentControl := ParentSource.Controls[I]; ClonedControl := TControlClass(CurrentControl.ClassType).Create(CurrentControl.Owner); ClonedControl.Parent := ParentSource; CloneProperties(CurrentControl, ClonedControl); ClonedControl.Name := CurrentControl.Name + '_'; if WithEvents then CloneEvents(CurrentControl, ClonedControl); end; end; procedure TForm1.Button1Click(Sender: TObject); begin DuplicateChildren(Panel1); end; </code></pre>
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