delphi - Remove tcategorypanel border -

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how can remove border tcategorypanel , tcategorypanelgroup in xe3?

tried , didn't work:

type    tcategorypanel =  class (vcl.extctrls.tcategorypanel) protected    procedure  createparams ( var  params: tcreateparams);  override ; end ;  procedure  tcategorypanel.createparams ( var  params: tcreateparams); begin   inherited ;   params.style:= params.style  ,  not  ws_border; end ;

for tcategorypanel need set protected property bevelouter bvnone.

for tcategorypanelgroup can indeed remove border in createparams. so:

params.style := params.style , (not ws_border);

it looks this:

enter image description here


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